JOSEPHSCOTT.ORG

josephscott.org

“PING OF DEATH” HISTORY Way back in the day the ‘ping of death‘ ( #) provided plenty of fun by annoying co-workers.Killing a Windows box on the office network was insanely simple: ping -l 65510 target.ip.address. We eventually had to come to a truce in order to get any work done. TIMING DETAILS WITH CURL Jon’s recent Find the Time to First Byte Using Curl post reminded me about the additional timing details that cURL can provide.. cURL supports formatted output for the details of the request ( see the cURL manpage for details, under “-w, –write-out ” ). For our purposes we’ll focus just on the timing details that are provided. CLOUDFLARE INJECTED JAVASCRIPT Thanks Joseph, this came very helpful! While Script Shield is a well-intended feature, its a bit intrusive and unneeded for uses cases like bloggers and freelancers who actually want to THE CONSTITUTION OF THE UNITED STATES: AMENDMENTS 14-17 Amendment 14:Section 1.All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No Sta FRACTIONS OF A PENNY The 9/10ths of a penny on gas prices is a remnant of the great depression, I thought. When gas cost 19-20 cents a gallon, that psychological 19 vs 20 made a difference.

PROMPT(1) SOLUTIONS

Last week I mentioned the prompt.ml XSS challenge. If you are still fighting some of the levels ( I didn't figure out all of them ) then you may want to check out the solutions. SIGNING YOUR SOCIAL SECURITY CARD One of the forms that was filled out when Rachel was born last month (and Alice just over four years ago) was for a Social Security Number (SSN) and card. We just got Rachel’s card the other day and I noticed that there is a signature line at the bottom. CALLER ID ON DISH NETWORK DVR I stumbled upon a neat feature on my Dish Network DVR 625, you can have it display Caller ID information (if you have that service on your phone line). Nothing earth shattering, just a fun little feature have. Instructions for enabling this are in Users Guide, page 101.For the PDF version it is Chapter 3 page 53. And for the really lazy: SOLID-STATE DRIVE (SSD) RELIABILITY PROBLEMS? Over the last month or two I've heard from a number of people who have had Solid-State Drives (SSD) fail. The first couple of times I heard this I thought it was odd. After the fifth time (all from

JOSEPHSCOTT.ORG

josephscott.org

“PING OF DEATH” HISTORY Way back in the day the ‘ping of death‘ ( #) provided plenty of fun by annoying co-workers.Killing a Windows box on the office network was insanely simple: ping -l 65510 target.ip.address. We eventually had to come to a truce in order to get any work done. TIMING DETAILS WITH CURL Jon’s recent Find the Time to First Byte Using Curl post reminded me about the additional timing details that cURL can provide.. cURL supports formatted output for the details of the request ( see the cURL manpage for details, under “-w, –write-out ” ). For our purposes we’ll focus just on the timing details that are provided. CLOUDFLARE INJECTED JAVASCRIPT Thanks Joseph, this came very helpful! While Script Shield is a well-intended feature, its a bit intrusive and unneeded for uses cases like bloggers and freelancers who actually want to THE CONSTITUTION OF THE UNITED STATES: AMENDMENTS 14-17 Amendment 14:Section 1.All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No Sta FRACTIONS OF A PENNY The 9/10ths of a penny on gas prices is a remnant of the great depression, I thought. When gas cost 19-20 cents a gallon, that psychological 19 vs 20 made a difference.

PROMPT(1) SOLUTIONS

Last week I mentioned the prompt.ml XSS challenge. If you are still fighting some of the levels ( I didn't figure out all of them ) then you may want to check out the solutions. SIGNING YOUR SOCIAL SECURITY CARD One of the forms that was filled out when Rachel was born last month (and Alice just over four years ago) was for a Social Security Number (SSN) and card. We just got Rachel’s card the other day and I noticed that there is a signature line at the bottom. CALLER ID ON DISH NETWORK DVR I stumbled upon a neat feature on my Dish Network DVR 625, you can have it display Caller ID information (if you have that service on your phone line). Nothing earth shattering, just a fun little feature have. Instructions for enabling this are in Users Guide, page 101.For the PDF version it is Chapter 3 page 53. And for the really lazy: SOLID-STATE DRIVE (SSD) RELIABILITY PROBLEMS? Over the last month or two I've heard from a number of people who have had Solid-State Drives (SSD) fail. The first couple of times I heard this I thought it was odd. After the fifth time (all from THE CONSTITUTION OF THE UNITED STATES: AMENDMENTS 14-17 Amendment 14:Section 1.All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No Sta SAFARI IS WORKING ON NATIVE LAZY-LOADING IMAGES This little Webkit gem is really nice to see: Bug 200764 – Main implementation for lazy image loading.. Chrome recently started supporting native lazy-loading, being the first, and so far only browser to do so. This concept is such a good idea, it would be a shame for it to remain Chrome only. Having it show up in a future version of Safari would be awesome. EMAIL PRIVACY TESTER Murphy's law goes something like:Anything that can go wrong, will go wrong.I get a similar feeling when it comes to tech today:If it can be done, someone will do it.Unfortunately that come PHP TIP: SPACES ARE NOT EMPTY() It can be really easy to get tripped up by PHP’s empty and isset functions. I just came across a bug in some code that was using empty() to check for something so I thought this was a good time to remind others about this.. First a quick refresher course on isset() and empty().The isset function only checks to see if a specific variable was been created and has a value other than NULL. ACTIVE DIRECTORY AS LDAP ADDRESS BOOK FOR THUNDERBIRD At work we’ve got all of our user account information Active Directory running on MS Windows 2003 servers. Since Active Directory makes this data available via LDAP you can use it as an address book back end for Thunderbird, Outlook and Maill.app (the built in email client on Mac OS X).I recently wrote up step by step instructions on how to setup each of these and thought others might APACHE FALLBACKRESOURCE DIRECTIVE As of Apache HTTPD 2.2.16 there is a new FallbackResource directive:. It is frequently desirable to have a single file or resource handle all requests to a particular directory, except those requests that correspond to an existing file or script.

WWW.JOSEPHSCOTT.ORG

www.josephscott.org

TRACKING TCP ROUND TRIP TIME IN NGINX The TCP_INFO option provides information about round trip times ( RTT ) for a TCP connection. Turns out that Nginx can expose this information for you as embedded REVERT TO A PREVIOUS VERSION IN SUBVERSION Most of the time when I’m working with code that is checked out from Subversion it’s moving forward, version after version. There are times though where I need to revert back to a previous version (one reason you should have your code versioned in the first place). POSTGRESQL INDEX LIMITATION (INDEX ROW SIZE XXXXX EXCEEDS I'm working on a project that includes the need to store a fair amount of raw text. I'm using PostgreSQL to store this text, with the raw data being stored in a TEXT data type field. When it came ti

JOSEPHSCOTT.ORG

josephscott.org

TIMING DETAILS WITH CURL For our purposes we’ll focus just on the timing details that are provided. Step one: create a new file, curl-format.txt, and paste in: Step two, make a request: And here is what you get back: Jon was looking specifically at time to first byte, which is the time_starttransfer line. The other timing details include DNS lookup,

TCP connect, pre

THE CONSTITUTION OF THE UNITED STATES: AMENDMENTS 14-17 Amendment 14:Section 1.All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No Sta PRESIDENTS THAT HAVE REDUCED THE FEDERAL DEBT The first three times the debt was paid down (1947, 1948 and 1951) Harry S. Truman was President. Perhaps he was serious about his The Buck Stops Here sign. The two most recent years the debt was reduced (1956 and 1957) were under President Dwight D. Eisenhower. Every President (and Congress) since 1957 has added to the federal debt.

PROMPT(1) SOLUTIONS

Mon 8 Jun 2015. No Comments. on prompt (1) Solutions. Last week I mentioned the prompt.ml XSS challenge. If you are still fighting some of the levels ( I didn’t figure out all of them ) then you may want to check out the solutions. Tags. security, xss. ← Tokyo, Japan → HTTP Client Hints: DPR ( device pixel ratio ) “PING OF DEATH” HISTORY What I don’t recall ever hearing about is the origin of how the ‘ping of death’ was discovered. The history is noted by Larry Osterman back in 2007, who apparently is the one who discovered the problem: I quickly realized that my test application was the cause of the crash, and I isolated my machines from the network and started

digging in.

SIGNING YOUR SOCIAL SECURITY CARD Signing Your Social Security Card. One of the forms that was filled out when Rachel was born last month (and Alice just over four years ago) was for a Social Security Number (SSN) and card. We just got Rachel’s card the other day and I noticed that there is a signature line at the bottom. Being just over five weeks old she obviously

isn’t

CALLER ID ON DISH NETWORK DVR I stumbled upon a neat feature on my Dish Network DVR 625, you can have it display Caller ID information (if you have that service on your phone line). Nothing earth shattering, just a fun little feature have. Instructions for enabling this are in Users Guide, page 101.For the PDF version it is Chapter 3 page 53. And for the really lazy:

WWW.JOSEPHSCOTT.ORG

www.josephscott.org

SOLID-STATE DRIVE (SSD) RELIABILITY PROBLEMS? Over the last month or two I've heard from a number of people who have had Solid-State Drives (SSD) fail. The first couple of times I heard this I thought it was odd. After the fifth time (all from

JOSEPHSCOTT.ORG

josephscott.org

TIMING DETAILS WITH CURL For our purposes we’ll focus just on the timing details that are provided. Step one: create a new file, curl-format.txt, and paste in: Step two, make a request: And here is what you get back: Jon was looking specifically at time to first byte, which is the time_starttransfer line. The other timing details include DNS lookup,

TCP connect, pre

THE CONSTITUTION OF THE UNITED STATES: AMENDMENTS 14-17 Amendment 14:Section 1.All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No Sta PRESIDENTS THAT HAVE REDUCED THE FEDERAL DEBT The first three times the debt was paid down (1947, 1948 and 1951) Harry S. Truman was President. Perhaps he was serious about his The Buck Stops Here sign. The two most recent years the debt was reduced (1956 and 1957) were under President Dwight D. Eisenhower. Every President (and Congress) since 1957 has added to the federal debt.

PROMPT(1) SOLUTIONS

Mon 8 Jun 2015. No Comments. on prompt (1) Solutions. Last week I mentioned the prompt.ml XSS challenge. If you are still fighting some of the levels ( I didn’t figure out all of them ) then you may want to check out the solutions. Tags. security, xss. ← Tokyo, Japan → HTTP Client Hints: DPR ( device pixel ratio ) “PING OF DEATH” HISTORY What I don’t recall ever hearing about is the origin of how the ‘ping of death’ was discovered. The history is noted by Larry Osterman back in 2007, who apparently is the one who discovered the problem: I quickly realized that my test application was the cause of the crash, and I isolated my machines from the network and started

digging in.

SIGNING YOUR SOCIAL SECURITY CARD Signing Your Social Security Card. One of the forms that was filled out when Rachel was born last month (and Alice just over four years ago) was for a Social Security Number (SSN) and card. We just got Rachel’s card the other day and I noticed that there is a signature line at the bottom. Being just over five weeks old she obviously

isn’t

CALLER ID ON DISH NETWORK DVR I stumbled upon a neat feature on my Dish Network DVR 625, you can have it display Caller ID information (if you have that service on your phone line). Nothing earth shattering, just a fun little feature have. Instructions for enabling this are in Users Guide, page 101.For the PDF version it is Chapter 3 page 53. And for the really lazy:

WWW.JOSEPHSCOTT.ORG

www.josephscott.org

SOLID-STATE DRIVE (SSD) RELIABILITY PROBLEMS? Over the last month or two I've heard from a number of people who have had Solid-State Drives (SSD) fail. The first couple of times I heard this I thought it was odd. After the fifth time (all from THE CONSTITUTION OF THE UNITED STATES: AMENDMENTS 14-17 Amendment 14:Section 1.All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No Sta EMAIL PRIVACY TESTER Murphy's law goes something like:Anything that can go wrong, will go wrong.I get a similar feeling when it comes to tech today:If it can be done, someone will do it.Unfortunately that come SAFARI IS WORKING ON NATIVE LAZY-LOADING IMAGES Safari Is Working On Native Lazy-Loading Images. This little Webkit gem is really nice to see: Bug 200764 – Main implementation for lazy image loading. Chrome recently started supporting native lazy-loading, being the first, and so far only browser to do so. This concept is such a good idea, it would be a shame for it to remain Chrome only. PHP TIP: SPACES ARE NOT EMPTY() It can be really easy to get tripped up by PHP’s empty and isset functions. I just came across a bug in some code that was using empty() to check for something so I thought this was a good time to remind others about this.. First a quick refresher course on isset() and empty().The isset function only checks to see if a specific variable was been created and has a value other than NULL.

WWW.JOSEPHSCOTT.ORG

www.josephscott.org

REVERT TO A PREVIOUS VERSION IN SUBVERSION Subversion can do this, but it isn’t via the revert command, instead it’s done with merge. Most of the time this means I can revert my working copy to rev 12345 with this command: svn merge -r HEAD:12345 . The merge command requires a directory parameter, the dot just means the current directory. This only reverts your working copy though POSTGRESQL INDEX LIMITATION (INDEX ROW SIZE XXXXX EXCEEDS postgres : ERROR: index row size 5364 exceeds btree maximum, 2713. When inserting larger chunks of data the index update failed because it was too large. I removed the index on the raw text column and errors went away. So the lesson I learned here is that the B-tree index in PostgreSQL has a maximum size of 2713 bytes. APACHE FALLBACKRESOURCE DIRECTIVE on Apache FallbackResource Directive. As of Apache HTTPD 2.2.16 there is a new FallbackResource directive: It is frequently desirable to have a single file or resource handle all requests to a particular directory, except those requests that correspond to an existing file or script. This is often referred to as a ‘front controller.’. TRACKING TCP ROUND TRIP TIME IN NGINX The TCP_INFO option provides information about round trip times ( RTT ) for a TCP connection. Turns out that Nginx can expose this information for you as embedded POSTGRESQL DOESN’T SUPPORT ‘FROM DUAL’ on PostgreSQL Doesn’t Support ‘FROM dual’. In Oracle I got used to getting the next value (nextval) in a sequence by doing something like this: SELECT some_sequence.nextval new_seq_value FROM dual. As a note to myself (and anyone else Googling for this) PostgreSQL does NOT support the ‘FROM dual’ syntax. It does however make the

JOSEPHSCOTT.ORG

josephscott.org

TIMING DETAILS WITH CURL For our purposes we’ll focus just on the timing details that are provided. Step one: create a new file, curl-format.txt, and paste in: Step two, make a request: And here is what you get back: Jon was looking specifically at time to first byte, which is the time_starttransfer line. The other timing details include DNS lookup,

TCP connect, pre

THE CONSTITUTION OF THE UNITED STATES: AMENDMENTS 14-17 Amendment 14:Section 1.All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No Sta PRESIDENTS THAT HAVE REDUCED THE FEDERAL DEBT The first three times the debt was paid down (1947, 1948 and 1951) Harry S. Truman was President. Perhaps he was serious about his The Buck Stops Here sign. The two most recent years the debt was reduced (1956 and 1957) were under President Dwight D. Eisenhower. Every President (and Congress) since 1957 has added to the federal debt.

PROMPT(1) SOLUTIONS

Mon 8 Jun 2015. No Comments. on prompt (1) Solutions. Last week I mentioned the prompt.ml XSS challenge. If you are still fighting some of the levels ( I didn’t figure out all of them ) then you may want to check out the solutions. Tags. security, xss. ← Tokyo, Japan → HTTP Client Hints: DPR ( device pixel ratio ) “PING OF DEATH” HISTORY What I don’t recall ever hearing about is the origin of how the ‘ping of death’ was discovered. The history is noted by Larry Osterman back in 2007, who apparently is the one who discovered the problem: I quickly realized that my test application was the cause of the crash, and I isolated my machines from the network and started

digging in.

SIGNING YOUR SOCIAL SECURITY CARD Signing Your Social Security Card. One of the forms that was filled out when Rachel was born last month (and Alice just over four years ago) was for a Social Security Number (SSN) and card. We just got Rachel’s card the other day and I noticed that there is a signature line at the bottom. Being just over five weeks old she obviously

isn’t

CALLER ID ON DISH NETWORK DVR I stumbled upon a neat feature on my Dish Network DVR 625, you can have it display Caller ID information (if you have that service on your phone line). Nothing earth shattering, just a fun little feature have. Instructions for enabling this are in Users Guide, page 101.For the PDF version it is Chapter 3 page 53. And for the really lazy:

WWW.JOSEPHSCOTT.ORG

www.josephscott.org

SOLID-STATE DRIVE (SSD) RELIABILITY PROBLEMS? Over the last month or two I've heard from a number of people who have had Solid-State Drives (SSD) fail. The first couple of times I heard this I thought it was odd. After the fifth time (all from

JOSEPHSCOTT.ORG

josephscott.org

TIMING DETAILS WITH CURL For our purposes we’ll focus just on the timing details that are provided. Step one: create a new file, curl-format.txt, and paste in: Step two, make a request: And here is what you get back: Jon was looking specifically at time to first byte, which is the time_starttransfer line. The other timing details include DNS lookup,

TCP connect, pre

THE CONSTITUTION OF THE UNITED STATES: AMENDMENTS 14-17 Amendment 14:Section 1.All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No Sta PRESIDENTS THAT HAVE REDUCED THE FEDERAL DEBT The first three times the debt was paid down (1947, 1948 and 1951) Harry S. Truman was President. Perhaps he was serious about his The Buck Stops Here sign. The two most recent years the debt was reduced (1956 and 1957) were under President Dwight D. Eisenhower. Every President (and Congress) since 1957 has added to the federal debt.

PROMPT(1) SOLUTIONS

Mon 8 Jun 2015. No Comments. on prompt (1) Solutions. Last week I mentioned the prompt.ml XSS challenge. If you are still fighting some of the levels ( I didn’t figure out all of them ) then you may want to check out the solutions. Tags. security, xss. ← Tokyo, Japan → HTTP Client Hints: DPR ( device pixel ratio ) “PING OF DEATH” HISTORY What I don’t recall ever hearing about is the origin of how the ‘ping of death’ was discovered. The history is noted by Larry Osterman back in 2007, who apparently is the one who discovered the problem: I quickly realized that my test application was the cause of the crash, and I isolated my machines from the network and started

digging in.

SIGNING YOUR SOCIAL SECURITY CARD Signing Your Social Security Card. One of the forms that was filled out when Rachel was born last month (and Alice just over four years ago) was for a Social Security Number (SSN) and card. We just got Rachel’s card the other day and I noticed that there is a signature line at the bottom. Being just over five weeks old she obviously

isn’t

CALLER ID ON DISH NETWORK DVR I stumbled upon a neat feature on my Dish Network DVR 625, you can have it display Caller ID information (if you have that service on your phone line). Nothing earth shattering, just a fun little feature have. Instructions for enabling this are in Users Guide, page 101.For the PDF version it is Chapter 3 page 53. And for the really lazy:

WWW.JOSEPHSCOTT.ORG

www.josephscott.org

SOLID-STATE DRIVE (SSD) RELIABILITY PROBLEMS? Over the last month or two I've heard from a number of people who have had Solid-State Drives (SSD) fail. The first couple of times I heard this I thought it was odd. After the fifth time (all from THE CONSTITUTION OF THE UNITED STATES: AMENDMENTS 14-17 Amendment 14:Section 1.All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No Sta EMAIL PRIVACY TESTER Murphy's law goes something like:Anything that can go wrong, will go wrong.I get a similar feeling when it comes to tech today:If it can be done, someone will do it.Unfortunately that come SAFARI IS WORKING ON NATIVE LAZY-LOADING IMAGES Safari Is Working On Native Lazy-Loading Images. This little Webkit gem is really nice to see: Bug 200764 – Main implementation for lazy image loading. Chrome recently started supporting native lazy-loading, being the first, and so far only browser to do so. This concept is such a good idea, it would be a shame for it to remain Chrome only. PHP TIP: SPACES ARE NOT EMPTY() It can be really easy to get tripped up by PHP’s empty and isset functions. I just came across a bug in some code that was using empty() to check for something so I thought this was a good time to remind others about this.. First a quick refresher course on isset() and empty().The isset function only checks to see if a specific variable was been created and has a value other than NULL.

WWW.JOSEPHSCOTT.ORG

www.josephscott.org

REVERT TO A PREVIOUS VERSION IN SUBVERSION Subversion can do this, but it isn’t via the revert command, instead it’s done with merge. Most of the time this means I can revert my working copy to rev 12345 with this command: svn merge -r HEAD:12345 . The merge command requires a directory parameter, the dot just means the current directory. This only reverts your working copy though POSTGRESQL INDEX LIMITATION (INDEX ROW SIZE XXXXX EXCEEDS postgres : ERROR: index row size 5364 exceeds btree maximum, 2713. When inserting larger chunks of data the index update failed because it was too large. I removed the index on the raw text column and errors went away. So the lesson I learned here is that the B-tree index in PostgreSQL has a maximum size of 2713 bytes. APACHE FALLBACKRESOURCE DIRECTIVE on Apache FallbackResource Directive. As of Apache HTTPD 2.2.16 there is a new FallbackResource directive: It is frequently desirable to have a single file or resource handle all requests to a particular directory, except those requests that correspond to an existing file or script. This is often referred to as a ‘front controller.’. TRACKING TCP ROUND TRIP TIME IN NGINX The TCP_INFO option provides information about round trip times ( RTT ) for a TCP connection. Turns out that Nginx can expose this information for you as embedded POSTGRESQL DOESN’T SUPPORT ‘FROM DUAL’ on PostgreSQL Doesn’t Support ‘FROM dual’. In Oracle I got used to getting the next value (nextval) in a sequence by doing something like this: SELECT some_sequence.nextval new_seq_value FROM dual. As a note to myself (and anyone else Googling for this) PostgreSQL does NOT support the ‘FROM dual’ syntax. It does however make the

JOSEPHSCOTT.ORG

josephscott.org

CLOUDFLARE INJECTED JAVASCRIPT Cloudflare has a feature called “Scrape Shield” that looks for pages with email addresses in them, then automatically injects this JavaScript to obfuscate the addresses. The idea is to reduce the risk that bots will harvest the email address for spam. This feature is turned out by default. Turning it off ( if you want to do that ) is

easy

FRACTIONS OF A PENNY To keep things simple lets say I bought 10 gallons of gas for the minivan last week. Without the fraction of a penny the price would just be $3.24 * 10 = $32.40. With the fraction of a penny it is $3.249 * 10 = $32.49. They made an extra $0.09 from my purchase. Go on to multiply that by the number of other people who made similar

transactions

“PING OF DEATH” HISTORY What I don’t recall ever hearing about is the origin of how the ‘ping of death’ was discovered. The history is noted by Larry Osterman back in 2007, who apparently is the one who discovered the problem: I quickly realized that my test application was the cause of the crash, and I isolated my machines from the network and started

digging in.

TIMING DETAILS WITH CURL For our purposes we’ll focus just on the timing details that are provided. Step one: create a new file, curl-format.txt, and paste in: Step two, make a request: And here is what you get back: Jon was looking specifically at time to first byte, which is the time_starttransfer line. The other timing details include DNS lookup,

TCP connect, pre

PROMPT(1) SOLUTIONS

Mon 8 Jun 2015. No Comments. on prompt (1) Solutions. Last week I mentioned the prompt.ml XSS challenge. If you are still fighting some of the levels ( I didn’t figure out all of them ) then you may want to check out the solutions. Tags. security, xss. ← Tokyo, Japan → HTTP Client Hints: DPR ( device pixel ratio ) PRESIDENTS THAT HAVE REDUCED THE FEDERAL DEBT The first three times the debt was paid down (1947, 1948 and 1951) Harry S. Truman was President. Perhaps he was serious about his The Buck Stops Here sign. The two most recent years the debt was reduced (1956 and 1957) were under President Dwight D. Eisenhower. Every President (and Congress) since 1957 has added to the federal debt. SOLID-STATE DRIVE (SSD) RELIABILITY PROBLEMS? Over the last month or two I've heard from a number of people who have had Solid-State Drives (SSD) fail. The first couple of times I heard this I thought it was odd. After the fifth time (all from TRACKING TCP ROUND TRIP TIME IN NGINX The TCP_INFO option provides information about round trip times ( RTT ) for a TCP connection. Turns out that Nginx can expose this information for you as embedded POSTGRESQL INDEX LIMITATION (INDEX ROW SIZE XXXXX EXCEEDS postgres : ERROR: index row size 5364 exceeds btree maximum, 2713. When inserting larger chunks of data the index update failed because it was too large. I removed the index on the raw text column and errors went away. So the lesson I learned here is that the B-tree index in PostgreSQL has a maximum size of 2713 bytes.

JOSEPHSCOTT.ORG

josephscott.org

CLOUDFLARE INJECTED JAVASCRIPT Cloudflare has a feature called “Scrape Shield” that looks for pages with email addresses in them, then automatically injects this JavaScript to obfuscate the addresses. The idea is to reduce the risk that bots will harvest the email address for spam. This feature is turned out by default. Turning it off ( if you want to do that ) is

easy

FRACTIONS OF A PENNY To keep things simple lets say I bought 10 gallons of gas for the minivan last week. Without the fraction of a penny the price would just be $3.24 * 10 = $32.40. With the fraction of a penny it is $3.249 * 10 = $32.49. They made an extra $0.09 from my purchase. Go on to multiply that by the number of other people who made similar

transactions

“PING OF DEATH” HISTORY What I don’t recall ever hearing about is the origin of how the ‘ping of death’ was discovered. The history is noted by Larry Osterman back in 2007, who apparently is the one who discovered the problem: I quickly realized that my test application was the cause of the crash, and I isolated my machines from the network and started

digging in.

TIMING DETAILS WITH CURL For our purposes we’ll focus just on the timing details that are provided. Step one: create a new file, curl-format.txt, and paste in: Step two, make a request: And here is what you get back: Jon was looking specifically at time to first byte, which is the time_starttransfer line. The other timing details include DNS lookup,

TCP connect, pre

PROMPT(1) SOLUTIONS

Mon 8 Jun 2015. No Comments. on prompt (1) Solutions. Last week I mentioned the prompt.ml XSS challenge. If you are still fighting some of the levels ( I didn’t figure out all of them ) then you may want to check out the solutions. Tags. security, xss. ← Tokyo, Japan → HTTP Client Hints: DPR ( device pixel ratio ) PRESIDENTS THAT HAVE REDUCED THE FEDERAL DEBT The first three times the debt was paid down (1947, 1948 and 1951) Harry S. Truman was President. Perhaps he was serious about his The Buck Stops Here sign. The two most recent years the debt was reduced (1956 and 1957) were under President Dwight D. Eisenhower. Every President (and Congress) since 1957 has added to the federal debt. SOLID-STATE DRIVE (SSD) RELIABILITY PROBLEMS? Over the last month or two I've heard from a number of people who have had Solid-State Drives (SSD) fail. The first couple of times I heard this I thought it was odd. After the fifth time (all from TRACKING TCP ROUND TRIP TIME IN NGINX The TCP_INFO option provides information about round trip times ( RTT ) for a TCP connection. Turns out that Nginx can expose this information for you as embedded POSTGRESQL INDEX LIMITATION (INDEX ROW SIZE XXXXX EXCEEDS postgres : ERROR: index row size 5364 exceeds btree maximum, 2713. When inserting larger chunks of data the index update failed because it was too large. I removed the index on the raw text column and errors went away. So the lesson I learned here is that the B-tree index in PostgreSQL has a maximum size of 2713 bytes.

JOSEPH SCOTT

Recent Posts. Joseph Scott

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josephscott.org

UTAH VACCINATION MATH With 2020 behind us, at least chronologically, there is a strong push to get the covid-19 pandemic under control through vaccinations. As has been widely reported, the initial rate of vaccination has been slower that what was originally hoped for.That got me wondering what the math looks like for vaccinations here in Utah.

SPOONS AND MASKS

Spoons and Masks. The current situation has reminded of a story I heard long ago, comparing heaven and hell. The version I remember went something like this: A man was praying to God desiring to know what heaven and hell were like. God then showed the man two doors. Upon entering the first door he saw a large round table, with an enormous

bowl

SIGNING YOUR SOCIAL SECURITY CARD Signing Your Social Security Card. One of the forms that was filled out when Rachel was born last month (and Alice just over four years ago) was for a Social Security Number (SSN) and card. We just got Rachel’s card the other day and I noticed that there is a signature line at the bottom. Being just over five weeks old she obviously

isn’t

PHP TIP: SPACES ARE NOT EMPTY() It can be really easy to get tripped up by PHP’s empty and isset functions. I just came across a bug in some code that was using empty() to check for something so I thought this was a good time to remind others about this.. First a quick refresher course on isset() and empty().The isset function only checks to see if a specific variable was been created and has a value other than NULL. CALLER ID ON DISH NETWORK DVR I stumbled upon a neat feature on my Dish Network DVR 625, you can have it display Caller ID information (if you have that service on your phone line). Nothing earth shattering, just a fun little feature have. Instructions for enabling this are in Users Guide, page 101.For the PDF version it is Chapter 3 page 53. And for the really lazy: HTTP BASIC AUTH WITH HTTPLIB2 httplib2 does handle connections differently than the built-in libraries and conveniently enables an on-disk cache (.cache by default). I chose it for a project that needed to manage connections more proactively than urllib, et al. POSTGRESQL INDEX LIMITATION (INDEX ROW SIZE XXXXX EXCEEDS postgres : ERROR: index row size 5364 exceeds btree maximum, 2713. When inserting larger chunks of data the index update failed because it was too large. I removed the index on the raw text column and errors went away. So the lesson I learned here is that the B-tree index in PostgreSQL has a maximum size of 2713 bytes. ACTIVE DIRECTORY AS LDAP ADDRESS BOOK FOR THUNDERBIRD At work we’ve got all of our user account information Active Directory running on MS Windows 2003 servers. Since Active Directory makes this data available via LDAP you can use it as an address book back end for Thunderbird, Outlook and Maill.app (the built in email client on Mac OS X).I recently wrote up step by step instructions on how to setup each of these and thought others might

JOSEPHSCOTT.ORG

josephscott.org

TIMING DETAILS WITH CURL For our purposes we’ll focus just on the timing details that are provided. Step one: create a new file, curl-format.txt, and paste in: Step two, make a request: And here is what you get back: Jon was looking specifically at time to first byte, which is the time_starttransfer line. The other timing details include DNS lookup,

TCP connect, pre

THE CONSTITUTION OF THE UNITED STATES: AMENDMENTS 14-17 Amendment 14:Section 1.All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No Sta SOLID-STATE DRIVE (SSD) RELIABILITY PROBLEMS? Over the last month or two I've heard from a number of people who have had Solid-State Drives (SSD) fail. The first couple of times I heard this I thought it was odd. After the fifth time (all from

PROMPT(1) SOLUTIONS

Mon 8 Jun 2015. No Comments. on prompt (1) Solutions. Last week I mentioned the prompt.ml XSS challenge. If you are still fighting some of the levels ( I didn’t figure out all of them ) then you may want to check out the solutions. Tags. security, xss. ← Tokyo, Japan → HTTP Client Hints: DPR ( device pixel ratio ) PRESIDENTS THAT HAVE REDUCED THE FEDERAL DEBT The first three times the debt was paid down (1947, 1948 and 1951) Harry S. Truman was President. Perhaps he was serious about his The Buck Stops Here sign. The two most recent years the debt was reduced (1956 and 1957) were under President Dwight D. Eisenhower. Every President (and Congress) since 1957 has added to the federal debt. EMAIL PRIVACY TESTER Murphy's law goes something like:Anything that can go wrong, will go wrong.I get a similar feeling when it comes to tech today:If it can be done, someone will do it.Unfortunately that come “PING OF DEATH” HISTORY What I don’t recall ever hearing about is the origin of how the ‘ping of death’ was discovered. The history is noted by Larry Osterman back in 2007, who apparently is the one who discovered the problem: I quickly realized that my test application was the cause of the crash, and I isolated my machines from the network and started

digging in.

SIGNING YOUR SOCIAL SECURITY CARD Signing Your Social Security Card. One of the forms that was filled out when Rachel was born last month (and Alice just over four years ago) was for a Social Security Number (SSN) and card. We just got Rachel’s card the other day and I noticed that there is a signature line at the bottom. Being just over five weeks old she obviously

isn’t

POSTGRESQL INDEX LIMITATION (INDEX ROW SIZE XXXXX EXCEEDS postgres : ERROR: index row size 5364 exceeds btree maximum, 2713. When inserting larger chunks of data the index update failed because it was too large. I removed the index on the raw text column and errors went away. So the lesson I learned here is that the B-tree index in PostgreSQL has a maximum size of 2713 bytes.

JOSEPHSCOTT.ORG

josephscott.org

TIMING DETAILS WITH CURL For our purposes we’ll focus just on the timing details that are provided. Step one: create a new file, curl-format.txt, and paste in: Step two, make a request: And here is what you get back: Jon was looking specifically at time to first byte, which is the time_starttransfer line. The other timing details include DNS lookup,

TCP connect, pre

THE CONSTITUTION OF THE UNITED STATES: AMENDMENTS 14-17 Amendment 14:Section 1.All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No Sta SOLID-STATE DRIVE (SSD) RELIABILITY PROBLEMS? Over the last month or two I've heard from a number of people who have had Solid-State Drives (SSD) fail. The first couple of times I heard this I thought it was odd. After the fifth time (all from

PROMPT(1) SOLUTIONS

Mon 8 Jun 2015. No Comments. on prompt (1) Solutions. Last week I mentioned the prompt.ml XSS challenge. If you are still fighting some of the levels ( I didn’t figure out all of them ) then you may want to check out the solutions. Tags. security, xss. ← Tokyo, Japan → HTTP Client Hints: DPR ( device pixel ratio ) PRESIDENTS THAT HAVE REDUCED THE FEDERAL DEBT The first three times the debt was paid down (1947, 1948 and 1951) Harry S. Truman was President. Perhaps he was serious about his The Buck Stops Here sign. The two most recent years the debt was reduced (1956 and 1957) were under President Dwight D. Eisenhower. Every President (and Congress) since 1957 has added to the federal debt. EMAIL PRIVACY TESTER Murphy's law goes something like:Anything that can go wrong, will go wrong.I get a similar feeling when it comes to tech today:If it can be done, someone will do it.Unfortunately that come “PING OF DEATH” HISTORY What I don’t recall ever hearing about is the origin of how the ‘ping of death’ was discovered. The history is noted by Larry Osterman back in 2007, who apparently is the one who discovered the problem: I quickly realized that my test application was the cause of the crash, and I isolated my machines from the network and started

digging in.

SIGNING YOUR SOCIAL SECURITY CARD Signing Your Social Security Card. One of the forms that was filled out when Rachel was born last month (and Alice just over four years ago) was for a Social Security Number (SSN) and card. We just got Rachel’s card the other day and I noticed that there is a signature line at the bottom. Being just over five weeks old she obviously

isn’t

POSTGRESQL INDEX LIMITATION (INDEX ROW SIZE XXXXX EXCEEDS postgres : ERROR: index row size 5364 exceeds btree maximum, 2713. When inserting larger chunks of data the index update failed because it was too large. I removed the index on the raw text column and errors went away. So the lesson I learned here is that the B-tree index in PostgreSQL has a maximum size of 2713 bytes.

JOSEPH SCOTT

Recent Posts. Joseph Scott

SPOONS AND MASKS

Spoons and Masks. The current situation has reminded of a story I heard long ago, comparing heaven and hell. The version I remember went something like this: A man was praying to God desiring to know what heaven and hell were like. God then showed the man two doors. Upon entering the first door he saw a large round table, with an enormous

bowl

THE END OF THIRD PARTY COOKIES ON THE WEB Safari Is Serious. I’ve been dealing with the fallout of Safari ITP ( Intelligent Tracking Prevention ) since mid-2018. It hasn’t been an easy road, ITP dramatically limits the range of valid uses of third party cookies, and even for the remaining valid uses it required following a strict set of rules. THE CONSTITUTION OF THE UNITED STATES: AMENDMENTS 14-17 Amendment 14:Section 1.All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No Sta “PING OF DEATH” HISTORY What I don’t recall ever hearing about is the origin of how the ‘ping of death’ was discovered. The history is noted by Larry Osterman back in 2007, who apparently is the one who discovered the problem: I quickly realized that my test application was the cause of the crash, and I isolated my machines from the network and started

digging in.

FRACTIONS OF A PENNY To keep things simple lets say I bought 10 gallons of gas for the minivan last week. Without the fraction of a penny the price would just be $3.24 * 10 = $32.40. With the fraction of a penny it is $3.249 * 10 = $32.49. They made an extra $0.09 from my purchase. Go on to multiply that by the number of other people who made similar

transactions

CUSTOM CHROME NETWORK THROTTLING By josephscott. Post date. Mon 26 Oct 2015. No Comments. on Custom Chrome Network Throttling. If you’ve used Chrome Mobile Device Emulation then you’ve probably seen the network throttling option: Newer versions of Chrome allow you to create custom network throttling profiles: You can define a profile in terms of throughput ( kb/s ) and COMPRESSED JAVASCRIPT Here is an interesting feature that I didn't know about, you can compress JavaScript and use that file directly, just like the uncompressed version. So after gzip prototype.js you can use it in CALLER ID ON DISH NETWORK DVR I stumbled upon a neat feature on my Dish Network DVR 625, you can have it display Caller ID information (if you have that service on your phone line). Nothing earth shattering, just a fun little feature have. Instructions for enabling this are in Users Guide, page 101.For the PDF version it is Chapter 3 page 53. And for the really lazy: POSTGRESQL INDEX LIMITATION (INDEX ROW SIZE XXXXX EXCEEDS postgres : ERROR: index row size 5364 exceeds btree maximum, 2713. When inserting larger chunks of data the index update failed because it was too large. I removed the index on the raw text column and errors went away. So the lesson I learned here is that the B-tree index in PostgreSQL has a maximum size of 2713 bytes.

JOSEPHSCOTT.ORG

josephscott.org

TIMING DETAILS WITH CURL For our purposes we’ll focus just on the timing details that are provided. Step one: create a new file, curl-format.txt, and paste in: Step two, make a request: And here is what you get back: Jon was looking specifically at time to first byte, which is the time_starttransfer line. The other timing details include DNS lookup,

TCP connect, pre

THE CONSTITUTION OF THE UNITED STATES: AMENDMENTS 14-17 Amendment 14:Section 1.All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No Sta SOLID-STATE DRIVE (SSD) RELIABILITY PROBLEMS? Over the last month or two I've heard from a number of people who have had Solid-State Drives (SSD) fail. The first couple of times I heard this I thought it was odd. After the fifth time (all from

PROMPT(1) SOLUTIONS

Mon 8 Jun 2015. No Comments. on prompt (1) Solutions. Last week I mentioned the prompt.ml XSS challenge. If you are still fighting some of the levels ( I didn’t figure out all of them ) then you may want to check out the solutions. Tags. security, xss. ← Tokyo, Japan → HTTP Client Hints: DPR ( device pixel ratio ) PRESIDENTS THAT HAVE REDUCED THE FEDERAL DEBT The first three times the debt was paid down (1947, 1948 and 1951) Harry S. Truman was President. Perhaps he was serious about his The Buck Stops Here sign. The two most recent years the debt was reduced (1956 and 1957) were under President Dwight D. Eisenhower. Every President (and Congress) since 1957 has added to the federal debt. EMAIL PRIVACY TESTER Murphy's law goes something like:Anything that can go wrong, will go wrong.I get a similar feeling when it comes to tech today:If it can be done, someone will do it.Unfortunately that come “PING OF DEATH” HISTORY What I don’t recall ever hearing about is the origin of how the ‘ping of death’ was discovered. The history is noted by Larry Osterman back in 2007, who apparently is the one who discovered the problem: I quickly realized that my test application was the cause of the crash, and I isolated my machines from the network and started

digging in.

SIGNING YOUR SOCIAL SECURITY CARD Signing Your Social Security Card. One of the forms that was filled out when Rachel was born last month (and Alice just over four years ago) was for a Social Security Number (SSN) and card. We just got Rachel’s card the other day and I noticed that there is a signature line at the bottom. Being just over five weeks old she obviously

isn’t

POSTGRESQL INDEX LIMITATION (INDEX ROW SIZE XXXXX EXCEEDS postgres : ERROR: index row size 5364 exceeds btree maximum, 2713. When inserting larger chunks of data the index update failed because it was too large. I removed the index on the raw text column and errors went away. So the lesson I learned here is that the B-tree index in PostgreSQL has a maximum size of 2713 bytes.

JOSEPHSCOTT.ORG

josephscott.org

TIMING DETAILS WITH CURL For our purposes we’ll focus just on the timing details that are provided. Step one: create a new file, curl-format.txt, and paste in: Step two, make a request: And here is what you get back: Jon was looking specifically at time to first byte, which is the time_starttransfer line. The other timing details include DNS lookup,

TCP connect, pre

THE CONSTITUTION OF THE UNITED STATES: AMENDMENTS 14-17 Amendment 14:Section 1.All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No Sta SOLID-STATE DRIVE (SSD) RELIABILITY PROBLEMS? Over the last month or two I've heard from a number of people who have had Solid-State Drives (SSD) fail. The first couple of times I heard this I thought it was odd. After the fifth time (all from

PROMPT(1) SOLUTIONS

Mon 8 Jun 2015. No Comments. on prompt (1) Solutions. Last week I mentioned the prompt.ml XSS challenge. If you are still fighting some of the levels ( I didn’t figure out all of them ) then you may want to check out the solutions. Tags. security, xss. ← Tokyo, Japan → HTTP Client Hints: DPR ( device pixel ratio ) PRESIDENTS THAT HAVE REDUCED THE FEDERAL DEBT The first three times the debt was paid down (1947, 1948 and 1951) Harry S. Truman was President. Perhaps he was serious about his The Buck Stops Here sign. The two most recent years the debt was reduced (1956 and 1957) were under President Dwight D. Eisenhower. Every President (and Congress) since 1957 has added to the federal debt. EMAIL PRIVACY TESTER Murphy's law goes something like:Anything that can go wrong, will go wrong.I get a similar feeling when it comes to tech today:If it can be done, someone will do it.Unfortunately that come “PING OF DEATH” HISTORY What I don’t recall ever hearing about is the origin of how the ‘ping of death’ was discovered. The history is noted by Larry Osterman back in 2007, who apparently is the one who discovered the problem: I quickly realized that my test application was the cause of the crash, and I isolated my machines from the network and started

digging in.

SIGNING YOUR SOCIAL SECURITY CARD Signing Your Social Security Card. One of the forms that was filled out when Rachel was born last month (and Alice just over four years ago) was for a Social Security Number (SSN) and card. We just got Rachel’s card the other day and I noticed that there is a signature line at the bottom. Being just over five weeks old she obviously

isn’t

POSTGRESQL INDEX LIMITATION (INDEX ROW SIZE XXXXX EXCEEDS postgres : ERROR: index row size 5364 exceeds btree maximum, 2713. When inserting larger chunks of data the index update failed because it was too large. I removed the index on the raw text column and errors went away. So the lesson I learned here is that the B-tree index in PostgreSQL has a maximum size of 2713 bytes.

JOSEPH SCOTT

Recent Posts. Joseph Scott

SPOONS AND MASKS

Spoons and Masks. The current situation has reminded of a story I heard long ago, comparing heaven and hell. The version I remember went something like this: A man was praying to God desiring to know what heaven and hell were like. God then showed the man two doors. Upon entering the first door he saw a large round table, with an enormous

bowl

THE END OF THIRD PARTY COOKIES ON THE WEB Safari Is Serious. I’ve been dealing with the fallout of Safari ITP ( Intelligent Tracking Prevention ) since mid-2018. It hasn’t been an easy road, ITP dramatically limits the range of valid uses of third party cookies, and even for the remaining valid uses it required following a strict set of rules. THE CONSTITUTION OF THE UNITED STATES: AMENDMENTS 14-17 Amendment 14:Section 1.All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No Sta “PING OF DEATH” HISTORY What I don’t recall ever hearing about is the origin of how the ‘ping of death’ was discovered. The history is noted by Larry Osterman back in 2007, who apparently is the one who discovered the problem: I quickly realized that my test application was the cause of the crash, and I isolated my machines from the network and started

digging in.

FRACTIONS OF A PENNY To keep things simple lets say I bought 10 gallons of gas for the minivan last week. Without the fraction of a penny the price would just be $3.24 * 10 = $32.40. With the fraction of a penny it is $3.249 * 10 = $32.49. They made an extra $0.09 from my purchase. Go on to multiply that by the number of other people who made similar

transactions

CUSTOM CHROME NETWORK THROTTLING By josephscott. Post date. Mon 26 Oct 2015. No Comments. on Custom Chrome Network Throttling. If you’ve used Chrome Mobile Device Emulation then you’ve probably seen the network throttling option: Newer versions of Chrome allow you to create custom network throttling profiles: You can define a profile in terms of throughput ( kb/s ) and COMPRESSED JAVASCRIPT Here is an interesting feature that I didn't know about, you can compress JavaScript and use that file directly, just like the uncompressed version. So after gzip prototype.js you can use it in CALLER ID ON DISH NETWORK DVR I stumbled upon a neat feature on my Dish Network DVR 625, you can have it display Caller ID information (if you have that service on your phone line). Nothing earth shattering, just a fun little feature have. Instructions for enabling this are in Users Guide, page 101.For the PDF version it is Chapter 3 page 53. And for the really lazy: POSTGRESQL INDEX LIMITATION (INDEX ROW SIZE XXXXX EXCEEDS postgres : ERROR: index row size 5364 exceeds btree maximum, 2713. When inserting larger chunks of data the index update failed because it was too large. I removed the index on the raw text column and errors went away. So the lesson I learned here is that the B-tree index in PostgreSQL has a maximum size of 2713 bytes.

JOSEPHSCOTT.ORG

josephscott.org

TIMING DETAILS WITH CURL For our purposes we’ll focus just on the timing details that are provided. Step one: create a new file, curl-format.txt, and paste in: Step two, make a request: And here is what you get back: Jon was looking specifically at time to first byte, which is the time_starttransfer line. The other timing details include DNS lookup,

TCP connect, pre

THE CONSTITUTION OF THE UNITED STATES: AMENDMENTS 14-17 Amendment 14:Section 1.All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No Sta SOLID-STATE DRIVE (SSD) RELIABILITY PROBLEMS? Over the last month or two I've heard from a number of people who have had Solid-State Drives (SSD) fail. The first couple of times I heard this I thought it was odd. After the fifth time (all from

PROMPT(1) SOLUTIONS

Mon 8 Jun 2015. No Comments. on prompt (1) Solutions. Last week I mentioned the prompt.ml XSS challenge. If you are still fighting some of the levels ( I didn’t figure out all of them ) then you may want to check out the solutions. Tags. security, xss. ← Tokyo, Japan → HTTP Client Hints: DPR ( device pixel ratio ) PRESIDENTS THAT HAVE REDUCED THE FEDERAL DEBT The first three times the debt was paid down (1947, 1948 and 1951) Harry S. Truman was President. Perhaps he was serious about his The Buck Stops Here sign. The two most recent years the debt was reduced (1956 and 1957) were under President Dwight D. Eisenhower. Every President (and Congress) since 1957 has added to the federal debt. EMAIL PRIVACY TESTER Murphy's law goes something like:Anything that can go wrong, will go wrong.I get a similar feeling when it comes to tech today:If it can be done, someone will do it.Unfortunately that come “PING OF DEATH” HISTORY What I don’t recall ever hearing about is the origin of how the ‘ping of death’ was discovered. The history is noted by Larry Osterman back in 2007, who apparently is the one who discovered the problem: I quickly realized that my test application was the cause of the crash, and I isolated my machines from the network and started

digging in.

SIGNING YOUR SOCIAL SECURITY CARD Signing Your Social Security Card. One of the forms that was filled out when Rachel was born last month (and Alice just over four years ago) was for a Social Security Number (SSN) and card. We just got Rachel’s card the other day and I noticed that there is a signature line at the bottom. Being just over five weeks old she obviously

isn’t

POSTGRESQL INDEX LIMITATION (INDEX ROW SIZE XXXXX EXCEEDS postgres : ERROR: index row size 5364 exceeds btree maximum, 2713. When inserting larger chunks of data the index update failed because it was too large. I removed the index on the raw text column and errors went away. So the lesson I learned here is that the B-tree index in PostgreSQL has a maximum size of 2713 bytes.

JOSEPHSCOTT.ORG

josephscott.org

TIMING DETAILS WITH CURL For our purposes we’ll focus just on the timing details that are provided. Step one: create a new file, curl-format.txt, and paste in: Step two, make a request: And here is what you get back: Jon was looking specifically at time to first byte, which is the time_starttransfer line. The other timing details include DNS lookup,

TCP connect, pre

THE CONSTITUTION OF THE UNITED STATES: AMENDMENTS 14-17 Amendment 14:Section 1.All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No Sta SOLID-STATE DRIVE (SSD) RELIABILITY PROBLEMS? Over the last month or two I've heard from a number of people who have had Solid-State Drives (SSD) fail. The first couple of times I heard this I thought it was odd. After the fifth time (all from

PROMPT(1) SOLUTIONS

Mon 8 Jun 2015. No Comments. on prompt (1) Solutions. Last week I mentioned the prompt.ml XSS challenge. If you are still fighting some of the levels ( I didn’t figure out all of them ) then you may want to check out the solutions. Tags. security, xss. ← Tokyo, Japan → HTTP Client Hints: DPR ( device pixel ratio ) PRESIDENTS THAT HAVE REDUCED THE FEDERAL DEBT The first three times the debt was paid down (1947, 1948 and 1951) Harry S. Truman was President. Perhaps he was serious about his The Buck Stops Here sign. The two most recent years the debt was reduced (1956 and 1957) were under President Dwight D. Eisenhower. Every President (and Congress) since 1957 has added to the federal debt. EMAIL PRIVACY TESTER Murphy's law goes something like:Anything that can go wrong, will go wrong.I get a similar feeling when it comes to tech today:If it can be done, someone will do it.Unfortunately that come “PING OF DEATH” HISTORY What I don’t recall ever hearing about is the origin of how the ‘ping of death’ was discovered. The history is noted by Larry Osterman back in 2007, who apparently is the one who discovered the problem: I quickly realized that my test application was the cause of the crash, and I isolated my machines from the network and started

digging in.

SIGNING YOUR SOCIAL SECURITY CARD Signing Your Social Security Card. One of the forms that was filled out when Rachel was born last month (and Alice just over four years ago) was for a Social Security Number (SSN) and card. We just got Rachel’s card the other day and I noticed that there is a signature line at the bottom. Being just over five weeks old she obviously

isn’t

POSTGRESQL INDEX LIMITATION (INDEX ROW SIZE XXXXX EXCEEDS postgres : ERROR: index row size 5364 exceeds btree maximum, 2713. When inserting larger chunks of data the index update failed because it was too large. I removed the index on the raw text column and errors went away. So the lesson I learned here is that the B-tree index in PostgreSQL has a maximum size of 2713 bytes.

JOSEPH SCOTT

Recent Posts. Joseph Scott

SPOONS AND MASKS

Spoons and Masks. The current situation has reminded of a story I heard long ago, comparing heaven and hell. The version I remember went something like this: A man was praying to God desiring to know what heaven and hell were like. God then showed the man two doors. Upon entering the first door he saw a large round table, with an enormous

bowl

THE END OF THIRD PARTY COOKIES ON THE WEB Safari Is Serious. I’ve been dealing with the fallout of Safari ITP ( Intelligent Tracking Prevention ) since mid-2018. It hasn’t been an easy road, ITP dramatically limits the range of valid uses of third party cookies, and even for the remaining valid uses it required following a strict set of rules. THE CONSTITUTION OF THE UNITED STATES: AMENDMENTS 14-17 Amendment 14:Section 1.All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No Sta “PING OF DEATH” HISTORY What I don’t recall ever hearing about is the origin of how the ‘ping of death’ was discovered. The history is noted by Larry Osterman back in 2007, who apparently is the one who discovered the problem: I quickly realized that my test application was the cause of the crash, and I isolated my machines from the network and started

digging in.

FRACTIONS OF A PENNY To keep things simple lets say I bought 10 gallons of gas for the minivan last week. Without the fraction of a penny the price would just be $3.24 * 10 = $32.40. With the fraction of a penny it is $3.249 * 10 = $32.49. They made an extra $0.09 from my purchase. Go on to multiply that by the number of other people who made similar

transactions

CUSTOM CHROME NETWORK THROTTLING By josephscott. Post date. Mon 26 Oct 2015. No Comments. on Custom Chrome Network Throttling. If you’ve used Chrome Mobile Device Emulation then you’ve probably seen the network throttling option: Newer versions of Chrome allow you to create custom network throttling profiles: You can define a profile in terms of throughput ( kb/s ) and COMPRESSED JAVASCRIPT Here is an interesting feature that I didn't know about, you can compress JavaScript and use that file directly, just like the uncompressed version. So after gzip prototype.js you can use it in CALLER ID ON DISH NETWORK DVR I stumbled upon a neat feature on my Dish Network DVR 625, you can have it display Caller ID information (if you have that service on your phone line). Nothing earth shattering, just a fun little feature have. Instructions for enabling this are in Users Guide, page 101.For the PDF version it is Chapter 3 page 53. And for the really lazy: POSTGRESQL INDEX LIMITATION (INDEX ROW SIZE XXXXX EXCEEDS postgres : ERROR: index row size 5364 exceeds btree maximum, 2713. When inserting larger chunks of data the index update failed because it was too large. I removed the index on the raw text column and errors went away. So the lesson I learned here is that the B-tree index in PostgreSQL has a maximum size of 2713 bytes. Toggle navigation Joseph Scott

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JOSEPH SCOTT

joseph@josephscott.org ------------------------- By day ( and sometimes night ) I lead the performance team at Automattic ( we are hiring ). My wife and I try to keep up with our four kids, living along the Wasatch Front in Utah. From time to time you'll find me writing on what ever I find interesting at blog.josephscott.org . You are welcome to contact me via email at joseph@josephscott.org. -------------------------

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