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MYNOSQL • NOSQL DATABASES AND POLYGLOT PERSISTENCE: A NoSQL Databases and Polyglot Persistence: A Curated Guide featuring the best NoSQL news, NoSQL articles, and NoSQL links covering all major NoSQL databases and following closely all things related to the NoSQL ecosystem. Everything you need and want to know about NoSQL. COMPARING DOCUMENT DATABASES TO KEY-VALUE STORES Oren Eini has an interesting ☞ post emphasizing the main differences between document databases (f.e. CouchDB, MongoDB, etc.) and key-value stores (f.e. Redis, Project Voldemort, Tokyo Cabinet):. The major benefit of using a document database comes from the fact that while it has all the benefits of a key/value store, you aren’t limited to just querying by key. MONGODB AND MYSQL BENCHMARKS • MYNOSQL The client host was saturated during the test and this limited peak QPS to 80,000 for MongoDB versus 110,000 for MySQL. I repeated one test using two 16-core client hosts with 40 processes per host. For that test the peak QPS on MongoDB improved to 155,000 while the peak for MySQL remained at 110,000. That is an impressive result. MAPREDUCE PAIRS AND STRIPES EXPLAINED • MYNOSQL Ben explaining the MapReduce pairs and stripes: The concept of stripes is to aggregate data prior to the Reducers by using a Combiner. There are several benefits to this, discussed below. When a Mapper completes, its intermediate data sits idle when pairing until all Mappers are complete. With striping, the intermediate data is passed
to the
HADOOP AND NETEZZA: DIFFERENCES & SIMILARITIES • MYNOSQL Hadoop used as a data ingestion layer for large volumes of data. Hadoop is a system of archive. In both these scenarios, Netezza would would be the tool for performing deep data analysis, while Hadoop would be used as both a cost-effective storage solution and ETLprocessing system.
HBASE/HADOOP MAC OS INSTALLATION GUIDE • MYNOSQL HBase/Hadoop Mac OS Installation Guide. Now we have a very detailed HBase/Hadoop installation guide for Mac OS thanks to Robert J. Berger : You should now have a fully working Pseudo-Distributed Hadoop / HBase setup on your Mac. This is not suitable for any kind of large data or production project. In fact it will probably fail if you tryto do
NEO4J AND ORIENTDB PERFORMANCE COMPARED • MYNOSQL Neo4j is fully ACID compliant and transactions can have a huge impact on the performance, at least for bulk operations. If not mistaking, this is the first data comparing the performance of two graph database. It doesn’t mean it is a relevant NoSQL benchmark or performance evaluation though. Original title and link: Neo4j andOrientDB
INTERSYSTEMS GLOBALS AND GT.M COMPARED • MYNOSQL InterSystems, producers of the Caché database, have launched Globals, a fast, proven, simple, flexible and free databases, 2 months ago.But after the initial announcement, I couldn’t find and didn’t hear much about it.This until Rob Tweed and K.S.Bhaskar took the time to explained some of the differences between InterSystems Globals and GT.M, both systems being implemented on top of the PINTEREST ARCHITECTURE NUMBERS • MYNOSQL Todd Hoff caught some new numbers about Pinterest architecture and from those the ones interesting from the data point of view:. 125 EC2 memcached instances, from which 90 for production and 35 for internal usage: Another 90 EC2 instances are dedicated towards caching, throughmemcache.
HAVE YOU HEARD OF KDB+? • MYNOSQL kdb+ has embedded a Kx propriety language called q is a proprietary array processing language developed by Arthur Whitney. The language serves as the query language for kdb+. q evolved from APL as explained by its author in an ☞ interview. The backbone of the q language is formed by atoms, lists, dictionaries and tables. MYNOSQL • NOSQL DATABASES AND POLYGLOT PERSISTENCE: A NoSQL Databases and Polyglot Persistence: A Curated Guide featuring the best NoSQL news, NoSQL articles, and NoSQL links covering all major NoSQL databases and following closely all things related to the NoSQL ecosystem. Everything you need and want to know about NoSQL. COMPARING DOCUMENT DATABASES TO KEY-VALUE STORES Oren Eini has an interesting ☞ post emphasizing the main differences between document databases (f.e. CouchDB, MongoDB, etc.) and key-value stores (f.e. Redis, Project Voldemort, Tokyo Cabinet):. The major benefit of using a document database comes from the fact that while it has all the benefits of a key/value store, you aren’t limited to just querying by key. MONGODB AND MYSQL BENCHMARKS • MYNOSQL The client host was saturated during the test and this limited peak QPS to 80,000 for MongoDB versus 110,000 for MySQL. I repeated one test using two 16-core client hosts with 40 processes per host. For that test the peak QPS on MongoDB improved to 155,000 while the peak for MySQL remained at 110,000. That is an impressive result. MAPREDUCE PAIRS AND STRIPES EXPLAINED • MYNOSQL Ben explaining the MapReduce pairs and stripes: The concept of stripes is to aggregate data prior to the Reducers by using a Combiner. There are several benefits to this, discussed below. When a Mapper completes, its intermediate data sits idle when pairing until all Mappers are complete. With striping, the intermediate data is passedto the
HADOOP AND NETEZZA: DIFFERENCES & SIMILARITIES • MYNOSQL Hadoop used as a data ingestion layer for large volumes of data. Hadoop is a system of archive. In both these scenarios, Netezza would would be the tool for performing deep data analysis, while Hadoop would be used as both a cost-effective storage solution and ETLprocessing system.
HBASE/HADOOP MAC OS INSTALLATION GUIDE • MYNOSQL HBase/Hadoop Mac OS Installation Guide. Now we have a very detailed HBase/Hadoop installation guide for Mac OS thanks to Robert J. Berger : You should now have a fully working Pseudo-Distributed Hadoop / HBase setup on your Mac. This is not suitable for any kind of large data or production project. In fact it will probably fail if you tryto do
NEO4J AND ORIENTDB PERFORMANCE COMPARED • MYNOSQL Neo4j is fully ACID compliant and transactions can have a huge impact on the performance, at least for bulk operations. If not mistaking, this is the first data comparing the performance of two graph database. It doesn’t mean it is a relevant NoSQL benchmark or performance evaluation though. Original title and link: Neo4j andOrientDB
INTERSYSTEMS GLOBALS AND GT.M COMPARED • MYNOSQL InterSystems, producers of the Caché database, have launched Globals, a fast, proven, simple, flexible and free databases, 2 months ago.But after the initial announcement, I couldn’t find and didn’t hear much about it.This until Rob Tweed and K.S.Bhaskar took the time to explained some of the differences between InterSystems Globals and GT.M, both systems being implemented on top of the PINTEREST ARCHITECTURE NUMBERS • MYNOSQL Todd Hoff caught some new numbers about Pinterest architecture and from those the ones interesting from the data point of view:. 125 EC2 memcached instances, from which 90 for production and 35 for internal usage: Another 90 EC2 instances are dedicated towards caching, throughmemcache.
HAVE YOU HEARD OF KDB+? • MYNOSQL kdb+ has embedded a Kx propriety language called q is a proprietary array processing language developed by Arthur Whitney. The language serves as the query language for kdb+. q evolved from APL as explained by its author in an ☞ interview. The backbone of the q language is formed by atoms, lists, dictionaries and tables. MYNOSQL • NOSQL DATABASES AND POLYGLOT PERSISTENCE: A NoSQL Databases and Polyglot Persistence: A Curated Guide featuring the best NoSQL news, NoSQL articles, and NoSQL links covering all major NoSQL databases and following closely all things related to the NoSQL ecosystem. Everything you need and want to know about NoSQL. GET A TASTE OF GRAPH DATABASES: INFOGRID AND NEO4J InfoGrid’s central element is MeshObject, while Neo4j has Node and Relationship. Generally speaking I have found the terminology in InfoGrid a bit more unusual (f.e. MeshObject, relateAndBless, etc.) the Neo4j uses also the LuceneIndexService for indexing both the tag and web resources nodes, but that’s only becaus e the code theremakes
WHAT IS HYPERGRAPHDB? • MYNOSQL Borislav Iordanov: HyperGraphDB is a storage framework based on generalized hypergraphs as its underlying data model. The unit of storage is a tuple made up of 0 or more other tuples. Each such tuple is called an atom. One could think of the data model as relational where higher-order, n-ary relationships are allowed or as graph-oriented where MYNGO: LIKE PHPMYADMIN FOR MONGODB • MYNOSQL Myngo: Like phpMyAdmin for MongoDB. Everyone wants a phpMyAdmin (MySQL) or a Futon (CouchDB) for his/her NoSQL product. MongoDB seems to already have some nice UI tools, but that doesn’t mean another one would not be needed. So here is Myngo: a web admin for MongoDB, which looks pretty similar (at least in terms of its functionality) to TERRASTORE 0.5.0: AN INTERVIEW WITH LEAD DEVELOPER Terrastore 0.5.0: An Interview with Lead Developer Sergio Bossa. Last week, Terrastore has seen a new release (0.5.0) and the new version brings quite a few new features: Multi-cluster (aka Ensemble) support: Terrastore can now be configured to join multiple clusters together and have them working as a unique cluster ensemble, with data HAVE YOU HEARD OF KDB+? • MYNOSQL kdb+ has embedded a Kx propriety language called q is a proprietary array processing language developed by Arthur Whitney. The language serves as the query language for kdb+. q evolved from APL as explained by its author in an ☞ interview. The backbone of the q language is formed by atoms, lists, dictionaries and tables. REDIS MEMORY USAGE • MYNOSQL Redis Memory Usage. About: redis. , Share it: You probably already know by now that Redis is that super fast in-memory (disk persistency being available through snapshots or append only mode) key-value store providing smart data types. In the past we’ve also talked about Redis virtual memory as a solution to improve memory efficiency. CASSANDRA @ TWITTER: AN INTERVIEW WITH RYAN KING • MYNOSQL There have been confirmed rumors about Twitter planning to use Cassandra for a long time. But except the mentioned post, I couldn’t find any other references. Twitter is fun by itself and we all know that NoSQL projects love Twitter.So, imagine how excited I was when after posting about Cassandra 0.5.0 release, I received a short email from Ryan King, the lead of Cassandra efforts at STEVE JOBS'S IDEAS VS EXECUTION :: TL; DR Steve Jobs: To me, ideas are worth nothing unless executed. They are just a multiplier. Execution is worth millions. and separately: You know, one of the things that really hurt Apple was after I left John Sculley got a very serious disease. It’s the disease of thinking that a really great idea is 90 percent of the work. WHAT ARE THE PROS AND CONS OF RUNNING CLOUDERA'S Dynamic MapReduce cluster sizing. Ease of use for simple jobs via their proprietary web console. Great documentation. Integrates nicely with other Amazon Web Services. Cloudera Distribution for Hadoop: CDH is open source; you have access to the source code and can inspect it for debugging purposes and make modifications as required. MYNOSQL • NOSQL DATABASES AND POLYGLOT PERSISTENCE: A NoSQL Databases and Polyglot Persistence: A Curated Guide featuring the best NoSQL news, NoSQL articles, and NoSQL links covering all major NoSQL databases and following closely all things related to the NoSQL ecosystem. Everything you need and want to know about NoSQL. COMPARING DOCUMENT DATABASES TO KEY-VALUE STORES Oren Eini has an interesting ☞ post emphasizing the main differences between document databases (f.e. CouchDB, MongoDB, etc.) and key-value stores (f.e. Redis, Project Voldemort, Tokyo Cabinet):. The major benefit of using a document database comes from the fact that while it has all the benefits of a key/value store, you aren’t limited to just querying by key. MONGODB AND MYSQL BENCHMARKS • MYNOSQL The client host was saturated during the test and this limited peak QPS to 80,000 for MongoDB versus 110,000 for MySQL. I repeated one test using two 16-core client hosts with 40 processes per host. For that test the peak QPS on MongoDB improved to 155,000 while the peak for MySQL remained at 110,000. That is an impressive result. HBASE/HADOOP MAC OS INSTALLATION GUIDE • MYNOSQL HBase/Hadoop Mac OS Installation Guide. Now we have a very detailed HBase/Hadoop installation guide for Mac OS thanks to Robert J. Berger : You should now have a fully working Pseudo-Distributed Hadoop / HBase setup on your Mac. This is not suitable for any kind of large data or production project. In fact it will probably fail if you tryto do
HADOOP AND NETEZZA: DIFFERENCES & SIMILARITIES • MYNOSQL Hadoop used as a data ingestion layer for large volumes of data. Hadoop is a system of archive. In both these scenarios, Netezza would would be the tool for performing deep data analysis, while Hadoop would be used as both a cost-effective storage solution and ETLprocessing system.
FACEBOOK REPLACING CASSANDRA WITH HBASE IN NEW... • MYNOSQL Minutes ago Facebook hosted a press conference about their upcoming messaging system, a combination of email and IM . There weren’t many details about the technical solution, except one slide mentioning that while rebuilding the messaging solution: Cassandra was replaced by HBase. Haystack was extended to be used for message attachments. NEO4J AND ORIENTDB PERFORMANCE COMPARED • MYNOSQL Neo4j is fully ACID compliant and transactions can have a huge impact on the performance, at least for bulk operations. If not mistaking, this is the first data comparing the performance of two graph database. It doesn’t mean it is a relevant NoSQL benchmark or performance evaluation though. Original title and link: Neo4j andOrientDB
TL; DR :: T(HINK) L(EARN); D(ISCOVER) R(EASON) An isolated mansion. A chillingly charismatic aristocrat. And a brave socialite drawn to expose their treacherous secrets. From the author of Gods of Jade and Shadow comes a “terrifying twist on classic gothic horror” (Kirkus Reviews) set in glamorous 1950s Mexico. PINTEREST ARCHITECTURE NUMBERS • MYNOSQL Todd Hoff caught some new numbers about Pinterest architecture and from those the ones interesting from the data point of view:. 125 EC2 memcached instances, from which 90 for production and 35 for internal usage: Another 90 EC2 instances are dedicated towards caching, throughmemcache.
HOW DOES FLUME AND SCRIBE COMPARE? • MYNOSQL I read this ☞ post about Cloudera’s Flume with much interest. Flume sounds like a very interesting tool, not to mention that from Cloudera’s business perspective it makes a lot of sense: We’ve seen our customers have great success using Hadoop for processing their data, but the question of how to get the data there to process in the first place was often significantly more challenging. MYNOSQL • NOSQL DATABASES AND POLYGLOT PERSISTENCE: A NoSQL Databases and Polyglot Persistence: A Curated Guide featuring the best NoSQL news, NoSQL articles, and NoSQL links covering all major NoSQL databases and following closely all things related to the NoSQL ecosystem. Everything you need and want to know about NoSQL. COMPARING DOCUMENT DATABASES TO KEY-VALUE STORES Oren Eini has an interesting ☞ post emphasizing the main differences between document databases (f.e. CouchDB, MongoDB, etc.) and key-value stores (f.e. Redis, Project Voldemort, Tokyo Cabinet):. The major benefit of using a document database comes from the fact that while it has all the benefits of a key/value store, you aren’t limited to just querying by key. MONGODB AND MYSQL BENCHMARKS • MYNOSQL The client host was saturated during the test and this limited peak QPS to 80,000 for MongoDB versus 110,000 for MySQL. I repeated one test using two 16-core client hosts with 40 processes per host. For that test the peak QPS on MongoDB improved to 155,000 while the peak for MySQL remained at 110,000. That is an impressive result. HBASE/HADOOP MAC OS INSTALLATION GUIDE • MYNOSQL HBase/Hadoop Mac OS Installation Guide. Now we have a very detailed HBase/Hadoop installation guide for Mac OS thanks to Robert J. Berger : You should now have a fully working Pseudo-Distributed Hadoop / HBase setup on your Mac. This is not suitable for any kind of large data or production project. In fact it will probably fail if you tryto do
HADOOP AND NETEZZA: DIFFERENCES & SIMILARITIES • MYNOSQL Hadoop used as a data ingestion layer for large volumes of data. Hadoop is a system of archive. In both these scenarios, Netezza would would be the tool for performing deep data analysis, while Hadoop would be used as both a cost-effective storage solution and ETLprocessing system.
FACEBOOK REPLACING CASSANDRA WITH HBASE IN NEW... • MYNOSQL Minutes ago Facebook hosted a press conference about their upcoming messaging system, a combination of email and IM . There weren’t many details about the technical solution, except one slide mentioning that while rebuilding the messaging solution: Cassandra was replaced by HBase. Haystack was extended to be used for message attachments. NEO4J AND ORIENTDB PERFORMANCE COMPARED • MYNOSQL Neo4j is fully ACID compliant and transactions can have a huge impact on the performance, at least for bulk operations. If not mistaking, this is the first data comparing the performance of two graph database. It doesn’t mean it is a relevant NoSQL benchmark or performance evaluation though. Original title and link: Neo4j andOrientDB
TL; DR :: T(HINK) L(EARN); D(ISCOVER) R(EASON) An isolated mansion. A chillingly charismatic aristocrat. And a brave socialite drawn to expose their treacherous secrets. From the author of Gods of Jade and Shadow comes a “terrifying twist on classic gothic horror” (Kirkus Reviews) set in glamorous 1950s Mexico. PINTEREST ARCHITECTURE NUMBERS • MYNOSQL Todd Hoff caught some new numbers about Pinterest architecture and from those the ones interesting from the data point of view:. 125 EC2 memcached instances, from which 90 for production and 35 for internal usage: Another 90 EC2 instances are dedicated towards caching, throughmemcache.
HOW DOES FLUME AND SCRIBE COMPARE? • MYNOSQL I read this ☞ post about Cloudera’s Flume with much interest. Flume sounds like a very interesting tool, not to mention that from Cloudera’s business perspective it makes a lot of sense: We’ve seen our customers have great success using Hadoop for processing their data, but the question of how to get the data there to process in the first place was often significantly more challenging. NOSQL: GUIDES, TUTORIALS, BOOKS, PAPERS • MYNOSQL NoSQL books ¶ Cassandra: The Definitive Guide. Authors: Even Hewitt. The rising popularity of Apache Cassandra rests on its ability to handle very large data sets that include hundreds of terabytes – and that’s why this distributed database has been chosen byNOSQL • MYNOSQL
NoSQL is a movement promoting a loosely defined class of non-relational data stores that break with a long history of relational databases. These data stores may not require fixed table schemas, usually avoid join operations and typically scalehorizontally.
TL; DR :: T(HINK) L(EARN); D(ISCOVER) R(EASON) In my corner, I often forget about the people that are able to create strong feelings into our lives through their art. Peter Marks writes in Arts activists taking on new roles as lobbyists - The Washington Post:. Something perverse has taken hold in recent years in mainstream attitudes about support for the arts: a sense among many, and especially those in national policymaking circles, that CONSISTENT HASHING EXPLAINED: THE WHAT AND THE WHY Consistent Hashing Explained: The What and the Why. Two nightd ago (and after a couple of beers), it took me about 10 minutes to explain what is consistent hashing and its benefits to a guy until he got the “aha” moment. But if I’d have to explain it in a WHAT IS HYPERGRAPHDB? • MYNOSQL Borislav Iordanov: HyperGraphDB is a storage framework based on generalized hypergraphs as its underlying data model. The unit of storage is a tuple made up of 0 or more other tuples. Each such tuple is called an atom. One could think of the data model as relational where higher-order, n-ary relationships are allowed or as graph-oriented where QUICK REFERENCE: HADOOP TOOLS ECOSYSTEM • MYNOSQL Sqoop. Sqoop (“SQL-to-Hadoop”) is a straightforward command-line tool with the following capabilities: Imports individual tables or entire databases to files in HDFS. Generates Java classes to allow you to interact with your imported data. Provides the ability to import from SQL databases straight into your Hive data warehouse. FACEBOOK REPLACING CASSANDRA WITH HBASE IN NEW... • MYNOSQL Minutes ago Facebook hosted a press conference about their upcoming messaging system, a combination of email and IM . There weren’t many details about the technical solution, except one slide mentioning that while rebuilding the messaging solution: Cassandra was replaced by HBase. Haystack was extended to be used for message attachments. MYNGO: LIKE PHPMYADMIN FOR MONGODB • MYNOSQL Myngo: Like phpMyAdmin for MongoDB. Everyone wants a phpMyAdmin (MySQL) or a Futon (CouchDB) for his/her NoSQL product. MongoDB seems to already have some nice UI tools, but that doesn’t mean another one would not be needed. So here is Myngo: a web admin for MongoDB, which looks pretty similar (at least in terms of its functionality) to HAVE YOU HEARD OF KDB+? • MYNOSQL kdb+ has embedded a Kx propriety language called q is a proprietary array processing language developed by Arthur Whitney. The language serves as the query language for kdb+. q evolved from APL as explained by its author in an ☞ interview. The backbone of the q language is formed by atoms, lists, dictionaries and tables. CASSANDRA @ TWITTER: AN INTERVIEW WITH RYAN KING • MYNOSQL There have been confirmed rumors about Twitter planning to use Cassandra for a long time. But except the mentioned post, I couldn’t find any other references. Twitter is fun by itself and we all know that NoSQL projects love Twitter.So, imagine how excited I was when after posting about Cassandra 0.5.0 release, I received a short email from Ryan King, the lead of Cassandra efforts at MYNOSQL • NOSQL DATABASES AND POLYGLOT PERSISTENCE: A NoSQL Databases and Polyglot Persistence: A Curated Guide featuring the best NoSQL news, NoSQL articles, and NoSQL links covering all major NoSQL databases and following closely all things related to the NoSQL ecosystem. Everything you need and want to know about NoSQL. COMPARING DOCUMENT DATABASES TO KEY-VALUE STORES Oren Eini has an interesting ☞ post emphasizing the main differences between document databases (f.e. CouchDB, MongoDB, etc.) and key-value stores (f.e. Redis, Project Voldemort, Tokyo Cabinet):. The major benefit of using a document database comes from the fact that while it has all the benefits of a key/value store, you aren’t limited to just querying by key. MONGODB AND MYSQL BENCHMARKS • MYNOSQL The client host was saturated during the test and this limited peak QPS to 80,000 for MongoDB versus 110,000 for MySQL. I repeated one test using two 16-core client hosts with 40 processes per host. For that test the peak QPS on MongoDB improved to 155,000 while the peak for MySQL remained at 110,000. That is an impressive result. HBASE/HADOOP MAC OS INSTALLATION GUIDE • MYNOSQL HBase/Hadoop Mac OS Installation Guide. Now we have a very detailed HBase/Hadoop installation guide for Mac OS thanks to Robert J. Berger : You should now have a fully working Pseudo-Distributed Hadoop / HBase setup on your Mac. This is not suitable for any kind of large data or production project. In fact it will probably fail if you tryto do
HADOOP AND NETEZZA: DIFFERENCES & SIMILARITIES • MYNOSQL Hadoop used as a data ingestion layer for large volumes of data. Hadoop is a system of archive. In both these scenarios, Netezza would would be the tool for performing deep data analysis, while Hadoop would be used as both a cost-effective storage solution and ETLprocessing system.
NEO4J AND ORIENTDB PERFORMANCE COMPARED • MYNOSQL Neo4j is fully ACID compliant and transactions can have a huge impact on the performance, at least for bulk operations. If not mistaking, this is the first data comparing the performance of two graph database. It doesn’t mean it is a relevant NoSQL benchmark or performance evaluation though. Original title and link: Neo4j andOrientDB
INTERSYSTEMS GLOBALS AND GT.M COMPARED • MYNOSQL InterSystems, producers of the Caché database, have launched Globals, a fast, proven, simple, flexible and free databases, 2 months ago.But after the initial announcement, I couldn’t find and didn’t hear much about it.This until Rob Tweed and K.S.Bhaskar took the time to explained some of the differences between InterSystems Globals and GT.M, both systems being implemented on top of the TL; DR :: T(HINK) L(EARN); D(ISCOVER) R(EASON) An isolated mansion. A chillingly charismatic aristocrat. And a brave socialite drawn to expose their treacherous secrets. From the author of Gods of Jade and Shadow comes a “terrifying twist on classic gothic horror” (Kirkus Reviews) set in glamorous 1950s Mexico. PINTEREST ARCHITECTURE NUMBERS • MYNOSQL Todd Hoff caught some new numbers about Pinterest architecture and from those the ones interesting from the data point of view:. 125 EC2 memcached instances, from which 90 for production and 35 for internal usage: Another 90 EC2 instances are dedicated towards caching, throughmemcache.
HOW DOES FLUME AND SCRIBE COMPARE? • MYNOSQL I read this ☞ post about Cloudera’s Flume with much interest. Flume sounds like a very interesting tool, not to mention that from Cloudera’s business perspective it makes a lot of sense: We’ve seen our customers have great success using Hadoop for processing their data, but the question of how to get the data there to process in the first place was often significantly more challenging. MYNOSQL • NOSQL DATABASES AND POLYGLOT PERSISTENCE: A NoSQL Databases and Polyglot Persistence: A Curated Guide featuring the best NoSQL news, NoSQL articles, and NoSQL links covering all major NoSQL databases and following closely all things related to the NoSQL ecosystem. Everything you need and want to know about NoSQL. COMPARING DOCUMENT DATABASES TO KEY-VALUE STORES Oren Eini has an interesting ☞ post emphasizing the main differences between document databases (f.e. CouchDB, MongoDB, etc.) and key-value stores (f.e. Redis, Project Voldemort, Tokyo Cabinet):. The major benefit of using a document database comes from the fact that while it has all the benefits of a key/value store, you aren’t limited to just querying by key. MONGODB AND MYSQL BENCHMARKS • MYNOSQL The client host was saturated during the test and this limited peak QPS to 80,000 for MongoDB versus 110,000 for MySQL. I repeated one test using two 16-core client hosts with 40 processes per host. For that test the peak QPS on MongoDB improved to 155,000 while the peak for MySQL remained at 110,000. That is an impressive result. HBASE/HADOOP MAC OS INSTALLATION GUIDE • MYNOSQL HBase/Hadoop Mac OS Installation Guide. Now we have a very detailed HBase/Hadoop installation guide for Mac OS thanks to Robert J. Berger : You should now have a fully working Pseudo-Distributed Hadoop / HBase setup on your Mac. This is not suitable for any kind of large data or production project. In fact it will probably fail if you tryto do
HADOOP AND NETEZZA: DIFFERENCES & SIMILARITIES • MYNOSQL Hadoop used as a data ingestion layer for large volumes of data. Hadoop is a system of archive. In both these scenarios, Netezza would would be the tool for performing deep data analysis, while Hadoop would be used as both a cost-effective storage solution and ETLprocessing system.
NEO4J AND ORIENTDB PERFORMANCE COMPARED • MYNOSQL Neo4j is fully ACID compliant and transactions can have a huge impact on the performance, at least for bulk operations. If not mistaking, this is the first data comparing the performance of two graph database. It doesn’t mean it is a relevant NoSQL benchmark or performance evaluation though. Original title and link: Neo4j andOrientDB
INTERSYSTEMS GLOBALS AND GT.M COMPARED • MYNOSQL InterSystems, producers of the Caché database, have launched Globals, a fast, proven, simple, flexible and free databases, 2 months ago.But after the initial announcement, I couldn’t find and didn’t hear much about it.This until Rob Tweed and K.S.Bhaskar took the time to explained some of the differences between InterSystems Globals and GT.M, both systems being implemented on top of the TL; DR :: T(HINK) L(EARN); D(ISCOVER) R(EASON) An isolated mansion. A chillingly charismatic aristocrat. And a brave socialite drawn to expose their treacherous secrets. From the author of Gods of Jade and Shadow comes a “terrifying twist on classic gothic horror” (Kirkus Reviews) set in glamorous 1950s Mexico. PINTEREST ARCHITECTURE NUMBERS • MYNOSQL Todd Hoff caught some new numbers about Pinterest architecture and from those the ones interesting from the data point of view:. 125 EC2 memcached instances, from which 90 for production and 35 for internal usage: Another 90 EC2 instances are dedicated towards caching, throughmemcache.
HOW DOES FLUME AND SCRIBE COMPARE? • MYNOSQL I read this ☞ post about Cloudera’s Flume with much interest. Flume sounds like a very interesting tool, not to mention that from Cloudera’s business perspective it makes a lot of sense: We’ve seen our customers have great success using Hadoop for processing their data, but the question of how to get the data there to process in the first place was often significantly more challenging. WHY DYNAMODB CONSISTENT READS COST TWICE OR WHAT'S Peter Bailis has posted an interesting article about the cost structure for Amazon DynamoDB reads— consistent reads are double the price of eventually consistent reads:. The cost of strong consistency to Amazon is low, if not zero. To you? 2x. If you were to run your own distributed database, you wouldn’t incur this cost (although you’d have to factor in hardware and ops costs).NOSQL • MYNOSQL
NoSQL is a movement promoting a loosely defined class of non-relational data stores that break with a long history of relational databases. These data stores may not require fixed table schemas, usually avoid join operations and typically scalehorizontally.
CONSISTENT HASHING EXPLAINED: THE WHAT AND THE WHY Consistent Hashing Explained: The What and the Why. Two nightd ago (and after a couple of beers), it took me about 10 minutes to explain what is consistent hashing and its benefits to a guy until he got the “aha” moment. But if I’d have to explain it in a QUICK REFERENCE: HADOOP TOOLS ECOSYSTEM • MYNOSQL Sqoop. Sqoop (“SQL-to-Hadoop”) is a straightforward command-line tool with the following capabilities: Imports individual tables or entire databases to files in HDFS. Generates Java classes to allow you to interact with your imported data. Provides the ability to import from SQL databases straight into your Hive data warehouse. WHAT IS HYPERGRAPHDB? • MYNOSQL Borislav Iordanov: HyperGraphDB is a storage framework based on generalized hypergraphs as its underlying data model. The unit of storage is a tuple made up of 0 or more other tuples. Each such tuple is called an atom. One could think of the data model as relational where higher-order, n-ary relationships are allowed or as graph-oriented where TL; DR :: T(HINK) L(EARN); D(ISCOVER) R(EASON) An isolated mansion. A chillingly charismatic aristocrat. And a brave socialite drawn to expose their treacherous secrets. From the author of Gods of Jade and Shadow comes a “terrifying twist on classic gothic horror” (Kirkus Reviews) set in glamorous 1950s Mexico. FACEBOOK REPLACING CASSANDRA WITH HBASE IN NEW... • MYNOSQL Minutes ago Facebook hosted a press conference about their upcoming messaging system, a combination of email and IM . There weren’t many details about the technical solution, except one slide mentioning that while rebuilding the messaging solution: Cassandra was replaced by HBase. Haystack was extended to be used for message attachments. COUCHDB GROUP_LEVEL FOR HIERARCHICAL DATA • MYNOSQL CouchDB group_level applied: CouchDB supports something called group_level in the view queries. On pcapr, we never really had the need to use this feature though we have over 52 different views. But in a recent internal project, we had the need to display folders inthe
COUCHDB'S FILE FORMAT IS BRILLIANTLY SIMPLE AND... • MYNOSQL Riyad Kalla: I have been reading up on log structured file systems, efficient data formats, database storage engines and copy-on-write semantics for a little more than week now reading about the pros and cons of different approaches and seeing it all come together so smoothly in a single design like Couch’s really deserves a hat-tipto the Couch team.
HAVE YOU HEARD OF KDB+? • MYNOSQL kdb+ has embedded a Kx propriety language called q is a proprietary array processing language developed by Arthur Whitney. The language serves as the query language for kdb+. q evolved from APL as explained by its author in an ☞ interview. The backbone of the q language is formed by atoms, lists, dictionaries and tables. MYNOSQL • NOSQL DATABASES AND POLYGLOT PERSISTENCE: A NoSQL Databases and Polyglot Persistence: A Curated Guide featuring the best NoSQL news, NoSQL articles, and NoSQL links covering all major NoSQL databases and following closely all things related to the NoSQL ecosystem. Everything you need and want to know about NoSQL. COMPARING DOCUMENT DATABASES TO KEY-VALUE STORES Oren Eini has an interesting ☞ post emphasizing the main differences between document databases (f.e. CouchDB, MongoDB, etc.) and key-value stores (f.e. Redis, Project Voldemort, Tokyo Cabinet):. The major benefit of using a document database comes from the fact that while it has all the benefits of a key/value store, you aren’t limited to just querying by key. MONGODB AND MYSQL BENCHMARKS • MYNOSQL The client host was saturated during the test and this limited peak QPS to 80,000 for MongoDB versus 110,000 for MySQL. I repeated one test using two 16-core client hosts with 40 processes per host. For that test the peak QPS on MongoDB improved to 155,000 while the peak for MySQL remained at 110,000. That is an impressive result. HBASE/HADOOP MAC OS INSTALLATION GUIDE • MYNOSQL HBase/Hadoop Mac OS Installation Guide. Now we have a very detailed HBase/Hadoop installation guide for Mac OS thanks to Robert J. Berger : You should now have a fully working Pseudo-Distributed Hadoop / HBase setup on your Mac. This is not suitable for any kind of large data or production project. In fact it will probably fail if you tryto do
HADOOP AND NETEZZA: DIFFERENCES & SIMILARITIES • MYNOSQL Hadoop used as a data ingestion layer for large volumes of data. Hadoop is a system of archive. In both these scenarios, Netezza would would be the tool for performing deep data analysis, while Hadoop would be used as both a cost-effective storage solution and ETLprocessing system.
NEO4J AND ORIENTDB PERFORMANCE COMPARED • MYNOSQL Neo4j is fully ACID compliant and transactions can have a huge impact on the performance, at least for bulk operations. If not mistaking, this is the first data comparing the performance of two graph database. It doesn’t mean it is a relevant NoSQL benchmark or performance evaluation though. Original title and link: Neo4j andOrientDB
INTERSYSTEMS GLOBALS AND GT.M COMPARED • MYNOSQL InterSystems, producers of the Caché database, have launched Globals, a fast, proven, simple, flexible and free databases, 2 months ago.But after the initial announcement, I couldn’t find and didn’t hear much about it.This until Rob Tweed and K.S.Bhaskar took the time to explained some of the differences between InterSystems Globals and GT.M, both systems being implemented on top of the TL; DR :: T(HINK) L(EARN); D(ISCOVER) R(EASON) An isolated mansion. A chillingly charismatic aristocrat. And a brave socialite drawn to expose their treacherous secrets. From the author of Gods of Jade and Shadow comes a “terrifying twist on classic gothic horror” (Kirkus Reviews) set in glamorous 1950s Mexico. PINTEREST ARCHITECTURE NUMBERS • MYNOSQL Todd Hoff caught some new numbers about Pinterest architecture and from those the ones interesting from the data point of view:. 125 EC2 memcached instances, from which 90 for production and 35 for internal usage: Another 90 EC2 instances are dedicated towards caching, throughmemcache.
HOW DOES FLUME AND SCRIBE COMPARE? • MYNOSQL I read this ☞ post about Cloudera’s Flume with much interest. Flume sounds like a very interesting tool, not to mention that from Cloudera’s business perspective it makes a lot of sense: We’ve seen our customers have great success using Hadoop for processing their data, but the question of how to get the data there to process in the first place was often significantly more challenging. MYNOSQL • NOSQL DATABASES AND POLYGLOT PERSISTENCE: A NoSQL Databases and Polyglot Persistence: A Curated Guide featuring the best NoSQL news, NoSQL articles, and NoSQL links covering all major NoSQL databases and following closely all things related to the NoSQL ecosystem. Everything you need and want to know about NoSQL. COMPARING DOCUMENT DATABASES TO KEY-VALUE STORES Oren Eini has an interesting ☞ post emphasizing the main differences between document databases (f.e. CouchDB, MongoDB, etc.) and key-value stores (f.e. Redis, Project Voldemort, Tokyo Cabinet):. The major benefit of using a document database comes from the fact that while it has all the benefits of a key/value store, you aren’t limited to just querying by key. MONGODB AND MYSQL BENCHMARKS • MYNOSQL The client host was saturated during the test and this limited peak QPS to 80,000 for MongoDB versus 110,000 for MySQL. I repeated one test using two 16-core client hosts with 40 processes per host. For that test the peak QPS on MongoDB improved to 155,000 while the peak for MySQL remained at 110,000. That is an impressive result. HBASE/HADOOP MAC OS INSTALLATION GUIDE • MYNOSQL HBase/Hadoop Mac OS Installation Guide. Now we have a very detailed HBase/Hadoop installation guide for Mac OS thanks to Robert J. Berger : You should now have a fully working Pseudo-Distributed Hadoop / HBase setup on your Mac. This is not suitable for any kind of large data or production project. In fact it will probably fail if you tryto do
HADOOP AND NETEZZA: DIFFERENCES & SIMILARITIES • MYNOSQL Hadoop used as a data ingestion layer for large volumes of data. Hadoop is a system of archive. In both these scenarios, Netezza would would be the tool for performing deep data analysis, while Hadoop would be used as both a cost-effective storage solution and ETLprocessing system.
NEO4J AND ORIENTDB PERFORMANCE COMPARED • MYNOSQL Neo4j is fully ACID compliant and transactions can have a huge impact on the performance, at least for bulk operations. If not mistaking, this is the first data comparing the performance of two graph database. It doesn’t mean it is a relevant NoSQL benchmark or performance evaluation though. Original title and link: Neo4j andOrientDB
INTERSYSTEMS GLOBALS AND GT.M COMPARED • MYNOSQL InterSystems, producers of the Caché database, have launched Globals, a fast, proven, simple, flexible and free databases, 2 months ago.But after the initial announcement, I couldn’t find and didn’t hear much about it.This until Rob Tweed and K.S.Bhaskar took the time to explained some of the differences between InterSystems Globals and GT.M, both systems being implemented on top of the TL; DR :: T(HINK) L(EARN); D(ISCOVER) R(EASON) An isolated mansion. A chillingly charismatic aristocrat. And a brave socialite drawn to expose their treacherous secrets. From the author of Gods of Jade and Shadow comes a “terrifying twist on classic gothic horror” (Kirkus Reviews) set in glamorous 1950s Mexico. PINTEREST ARCHITECTURE NUMBERS • MYNOSQL Todd Hoff caught some new numbers about Pinterest architecture and from those the ones interesting from the data point of view:. 125 EC2 memcached instances, from which 90 for production and 35 for internal usage: Another 90 EC2 instances are dedicated towards caching, throughmemcache.
HOW DOES FLUME AND SCRIBE COMPARE? • MYNOSQL I read this ☞ post about Cloudera’s Flume with much interest. Flume sounds like a very interesting tool, not to mention that from Cloudera’s business perspective it makes a lot of sense: We’ve seen our customers have great success using Hadoop for processing their data, but the question of how to get the data there to process in the first place was often significantly more challenging. WHY DYNAMODB CONSISTENT READS COST TWICE OR WHAT'S Peter Bailis has posted an interesting article about the cost structure for Amazon DynamoDB reads— consistent reads are double the price of eventually consistent reads:. The cost of strong consistency to Amazon is low, if not zero. To you? 2x. If you were to run your own distributed database, you wouldn’t incur this cost (although you’d have to factor in hardware and ops costs).NOSQL • MYNOSQL
NoSQL is a movement promoting a loosely defined class of non-relational data stores that break with a long history of relational databases. These data stores may not require fixed table schemas, usually avoid join operations and typically scalehorizontally.
CONSISTENT HASHING EXPLAINED: THE WHAT AND THE WHY Consistent Hashing Explained: The What and the Why. Two nightd ago (and after a couple of beers), it took me about 10 minutes to explain what is consistent hashing and its benefits to a guy until he got the “aha” moment. But if I’d have to explain it in a QUICK REFERENCE: HADOOP TOOLS ECOSYSTEM • MYNOSQL Sqoop. Sqoop (“SQL-to-Hadoop”) is a straightforward command-line tool with the following capabilities: Imports individual tables or entire databases to files in HDFS. Generates Java classes to allow you to interact with your imported data. Provides the ability to import from SQL databases straight into your Hive data warehouse. WHAT IS HYPERGRAPHDB? • MYNOSQL Borislav Iordanov: HyperGraphDB is a storage framework based on generalized hypergraphs as its underlying data model. The unit of storage is a tuple made up of 0 or more other tuples. Each such tuple is called an atom. One could think of the data model as relational where higher-order, n-ary relationships are allowed or as graph-oriented where TL; DR :: T(HINK) L(EARN); D(ISCOVER) R(EASON) An isolated mansion. A chillingly charismatic aristocrat. And a brave socialite drawn to expose their treacherous secrets. From the author of Gods of Jade and Shadow comes a “terrifying twist on classic gothic horror” (Kirkus Reviews) set in glamorous 1950s Mexico. FACEBOOK REPLACING CASSANDRA WITH HBASE IN NEW... • MYNOSQL Minutes ago Facebook hosted a press conference about their upcoming messaging system, a combination of email and IM . There weren’t many details about the technical solution, except one slide mentioning that while rebuilding the messaging solution: Cassandra was replaced by HBase. Haystack was extended to be used for message attachments. COUCHDB GROUP_LEVEL FOR HIERARCHICAL DATA • MYNOSQL CouchDB group_level applied: CouchDB supports something called group_level in the view queries. On pcapr, we never really had the need to use this feature though we have over 52 different views. But in a recent internal project, we had the need to display folders inthe
COUCHDB'S FILE FORMAT IS BRILLIANTLY SIMPLE AND... • MYNOSQL Riyad Kalla: I have been reading up on log structured file systems, efficient data formats, database storage engines and copy-on-write semantics for a little more than week now reading about the pros and cons of different approaches and seeing it all come together so smoothly in a single design like Couch’s really deserves a hat-tipto the Couch team.
HAVE YOU HEARD OF KDB+? • MYNOSQL kdb+ has embedded a Kx propriety language called q is a proprietary array processing language developed by Arthur Whitney. The language serves as the query language for kdb+. q evolved from APL as explained by its author in an ☞ interview. The backbone of the q language is formed by atoms, lists, dictionaries and tables. MYNOSQL • NOSQL DATABASES AND POLYGLOT PERSISTENCE: A NoSQL Databases and Polyglot Persistence: A Curated Guide featuring the best NoSQL news, NoSQL articles, and NoSQL links covering all major NoSQL databases and following closely all things related to the NoSQL ecosystem. Everything you need and want to know about NoSQL. COMPARING DOCUMENT DATABASES TO KEY-VALUE STORES Oren Eini has an interesting ☞ post emphasizing the main differences between document databases (f.e. CouchDB, MongoDB, etc.) and key-value stores (f.e. Redis, Project Voldemort, Tokyo Cabinet):. The major benefit of using a document database comes from the fact that while it has all the benefits of a key/value store, you aren’t limited to just querying by key. MONGODB AND MYSQL BENCHMARKS • MYNOSQL The client host was saturated during the test and this limited peak QPS to 80,000 for MongoDB versus 110,000 for MySQL. I repeated one test using two 16-core client hosts with 40 processes per host. For that test the peak QPS on MongoDB improved to 155,000 while the peak for MySQL remained at 110,000. That is an impressive result. HBASE/HADOOP MAC OS INSTALLATION GUIDE • MYNOSQL HBase/Hadoop Mac OS Installation Guide. Now we have a very detailed HBase/Hadoop installation guide for Mac OS thanks to Robert J. Berger : You should now have a fully working Pseudo-Distributed Hadoop / HBase setup on your Mac. This is not suitable for any kind of large data or production project. In fact it will probably fail if you tryto do
HADOOP AND NETEZZA: DIFFERENCES & SIMILARITIES • MYNOSQL Hadoop used as a data ingestion layer for large volumes of data. Hadoop is a system of archive. In both these scenarios, Netezza would would be the tool for performing deep data analysis, while Hadoop would be used as both a cost-effective storage solution and ETLprocessing system.
NEO4J AND ORIENTDB PERFORMANCE COMPARED • MYNOSQL Neo4j is fully ACID compliant and transactions can have a huge impact on the performance, at least for bulk operations. If not mistaking, this is the first data comparing the performance of two graph database. It doesn’t mean it is a relevant NoSQL benchmark or performance evaluation though. Original title and link: Neo4j andOrientDB
TL; DR :: T(HINK) L(EARN); D(ISCOVER) R(EASON) An isolated mansion. A chillingly charismatic aristocrat. And a brave socialite drawn to expose their treacherous secrets. From the author of Gods of Jade and Shadow comes a “terrifying twist on classic gothic horror” (Kirkus Reviews) set in glamorous 1950s Mexico. FACEBOOK REPLACING CASSANDRA WITH HBASE IN NEW Minutes ago Facebook hosted a press conference about their upcoming messaging system, a combination of email and IM . There weren’t many details about the technical solution, except one slide mentioning that while rebuilding the messaging solution: Cassandra was replaced by HBase. Haystack was extended to be used for message attachments. PINTEREST ARCHITECTURE NUMBERS • MYNOSQL Todd Hoff caught some new numbers about Pinterest architecture and from those the ones interesting from the data point of view:. 125 EC2 memcached instances, from which 90 for production and 35 for internal usage: Another 90 EC2 instances are dedicated towards caching, throughmemcache.
HOW DOES FLUME AND SCRIBE COMPARE? • MYNOSQL I read this ☞ post about Cloudera’s Flume with much interest. Flume sounds like a very interesting tool, not to mention that from Cloudera’s business perspective it makes a lot of sense: We’ve seen our customers have great success using Hadoop for processing their data, but the question of how to get the data there to process in the first place was often significantly more challenging. MYNOSQL • NOSQL DATABASES AND POLYGLOT PERSISTENCE: A NoSQL Databases and Polyglot Persistence: A Curated Guide featuring the best NoSQL news, NoSQL articles, and NoSQL links covering all major NoSQL databases and following closely all things related to the NoSQL ecosystem. Everything you need and want to know about NoSQL. COMPARING DOCUMENT DATABASES TO KEY-VALUE STORES Oren Eini has an interesting ☞ post emphasizing the main differences between document databases (f.e. CouchDB, MongoDB, etc.) and key-value stores (f.e. Redis, Project Voldemort, Tokyo Cabinet):. The major benefit of using a document database comes from the fact that while it has all the benefits of a key/value store, you aren’t limited to just querying by key. MONGODB AND MYSQL BENCHMARKS • MYNOSQL The client host was saturated during the test and this limited peak QPS to 80,000 for MongoDB versus 110,000 for MySQL. I repeated one test using two 16-core client hosts with 40 processes per host. For that test the peak QPS on MongoDB improved to 155,000 while the peak for MySQL remained at 110,000. That is an impressive result. HBASE/HADOOP MAC OS INSTALLATION GUIDE • MYNOSQL HBase/Hadoop Mac OS Installation Guide. Now we have a very detailed HBase/Hadoop installation guide for Mac OS thanks to Robert J. Berger : You should now have a fully working Pseudo-Distributed Hadoop / HBase setup on your Mac. This is not suitable for any kind of large data or production project. In fact it will probably fail if you tryto do
HADOOP AND NETEZZA: DIFFERENCES & SIMILARITIES • MYNOSQL Hadoop used as a data ingestion layer for large volumes of data. Hadoop is a system of archive. In both these scenarios, Netezza would would be the tool for performing deep data analysis, while Hadoop would be used as both a cost-effective storage solution and ETLprocessing system.
NEO4J AND ORIENTDB PERFORMANCE COMPARED • MYNOSQL Neo4j is fully ACID compliant and transactions can have a huge impact on the performance, at least for bulk operations. If not mistaking, this is the first data comparing the performance of two graph database. It doesn’t mean it is a relevant NoSQL benchmark or performance evaluation though. Original title and link: Neo4j andOrientDB
TL; DR :: T(HINK) L(EARN); D(ISCOVER) R(EASON) An isolated mansion. A chillingly charismatic aristocrat. And a brave socialite drawn to expose their treacherous secrets. From the author of Gods of Jade and Shadow comes a “terrifying twist on classic gothic horror” (Kirkus Reviews) set in glamorous 1950s Mexico. FACEBOOK REPLACING CASSANDRA WITH HBASE IN NEW Minutes ago Facebook hosted a press conference about their upcoming messaging system, a combination of email and IM . There weren’t many details about the technical solution, except one slide mentioning that while rebuilding the messaging solution: Cassandra was replaced by HBase. Haystack was extended to be used for message attachments. PINTEREST ARCHITECTURE NUMBERS • MYNOSQL Todd Hoff caught some new numbers about Pinterest architecture and from those the ones interesting from the data point of view:. 125 EC2 memcached instances, from which 90 for production and 35 for internal usage: Another 90 EC2 instances are dedicated towards caching, throughmemcache.
HOW DOES FLUME AND SCRIBE COMPARE? • MYNOSQL I read this ☞ post about Cloudera’s Flume with much interest. Flume sounds like a very interesting tool, not to mention that from Cloudera’s business perspective it makes a lot of sense: We’ve seen our customers have great success using Hadoop for processing their data, but the question of how to get the data there to process in the first place was often significantly more challenging. NOSQL: GUIDES, TUTORIALS, BOOKS, PAPERS • MYNOSQL NoSQL books ¶ Cassandra: The Definitive Guide. Authors: Even Hewitt. The rising popularity of Apache Cassandra rests on its ability to handle very large data sets that include hundreds of terabytes – and that’s why this distributed database has been chosen by WHY DYNAMODB CONSISTENT READS COST TWICE OR WHAT'S Peter Bailis has posted an interesting article about the cost structure for Amazon DynamoDB reads— consistent reads are double the price of eventually consistent reads:. The cost of strong consistency to Amazon is low, if not zero. To you? 2x. If you were to run your own distributed database, you wouldn’t incur this cost (although you’d have to factor in hardware and ops costs).NOSQL • MYNOSQL
NoSQL is a movement promoting a loosely defined class of non-relational data stores that break with a long history of relational databases. These data stores may not require fixed table schemas, usually avoid join operations and typically scalehorizontally.
CONSISTENT HASHING EXPLAINED: THE WHAT AND THE WHY Consistent Hashing Explained: The What and the Why. Two nightd ago (and after a couple of beers), it took me about 10 minutes to explain what is consistent hashing and its benefits to a guy until he got the “aha” moment. But if I’d have to explain it in a WHAT IS HYPERGRAPHDB? • MYNOSQL Borislav Iordanov: HyperGraphDB is a storage framework based on generalized hypergraphs as its underlying data model. The unit of storage is a tuple made up of 0 or more other tuples. Each such tuple is called an atom. One could think of the data model as relational where higher-order, n-ary relationships are allowed or as graph-oriented where QUICK REFERENCE: HADOOP TOOLS ECOSYSTEM • MYNOSQL Sqoop. Sqoop (“SQL-to-Hadoop”) is a straightforward command-line tool with the following capabilities: Imports individual tables or entire databases to files in HDFS. Generates Java classes to allow you to interact with your imported data. Provides the ability to import from SQL databases straight into your Hive data warehouse. TL; DR :: T(HINK) L(EARN); D(ISCOVER) R(EASON) In my corner, I often forget about the people that are able to create strong feelings into our lives through their art. Peter Marks writes in Arts activists taking on new roles as lobbyists - The Washington Post:. Something perverse has taken hold in recent years in mainstream attitudes about support for the arts: a sense among many, and especially those in national policymaking circles, that FACEBOOK REPLACING CASSANDRA WITH HBASE IN NEW Minutes ago Facebook hosted a press conference about their upcoming messaging system, a combination of email and IM . There weren’t many details about the technical solution, except one slide mentioning that while rebuilding the messaging solution: Cassandra was replaced by HBase. Haystack was extended to be used for message attachments. COUCHDB GROUP_LEVEL FOR HIERARCHICAL DATA • MYNOSQL CouchDB group_level applied: CouchDB supports something called group_level in the view queries. On pcapr, we never really had the need to use this feature though we have over 52 different views. But in a recent internal project, we had the need to display folders inthe
MYNGO: LIKE PHPMYADMIN FOR MONGODB • MYNOSQL Myngo: Like phpMyAdmin for MongoDB. Everyone wants a phpMyAdmin (MySQL) or a Futon (CouchDB) for his/her NoSQL product. MongoDB seems to already have some nice UI tools, but that doesn’t mean another one would not be needed. So here is Myngo: a web admin for MongoDB, which looks pretty similar (at least in terms of its functionality) toHome • RSS
TL; DR
by Alex Popescu
t(hink) l(earn); d(iscover) r(eason)October 10, 2020
SCROLLING BACK AND FORTH ON MACOS USING THE SPACE BAR I only learned about space bar scrolling in reverse direction trick very recently. Reactions to my earlier tweetmade me
think that I’m not alone in discovering this. On macOS, you can use the Space bar to scroll forward. It usually works in those controls that do not accept input (web viewer, text viewers, etc.). But if you press Shift and Space bar then you can alsoscroll backward.
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-------------------------May 24, 2020
SPOTLIGHT, SYMLINKS, AND ALIASES Today I learned that Spotlight doesn’t consider symlinks; or at least in the context of having an _application_ in /Applications as a symlink1. BUT Spotlight will recognize an alias. When looking it up through Spotlight, you’ll find it in the Others section of the results and not applications. A case of _something, even if not perfect, is better than nothing_. -------------------------*
in my case, I have Emacs and MacVim built or installed under/usr/local ↩
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-------------------------January 1, 2020
HOW MUCH LEISURE TIME WOULD YOU LIKE TO HAVE?⁜
From an article published by The Atlantic:
> The paper, which analyzed data covering about 35,000 Americans, > found that employed people’s ratings of their satisfaction with > life peaked when they had in the neighborhood of two and a half > hours of free time a day. For people who didn’t work, the optimal > amount was four hours and 45 minutes.⁜
-------------------------January 1, 2020
ANOTHER PASSWORD MANAGER FOR MACOS AND IOS: SECRETS I just found another password manager for macOS and iOS: Secrets.
Among the features: no subscription, unlock with Touch ID, browser extensions with auto fill. I haven’t used it as for the time I’m sticking with Myki. But it’s good to have yet another no subscription alternative.※
-------------------------December 30, 2019
HOW TO SET A GO VARIABLE AT COMPILE TIME USING LINKER FLAGS Josh Roppo in Setting Go(1.5) variables at compile time for Versioning:
> Injecting the Git Hash, Tag, date, build system, and version > attributes into variables of a Golang binary can be very useful to > validate that your build process is functioning correctly. Bookmarking this article here as I’ve found this extremely useful. I was asking myself this question earlier today and found this link from an issue opened against the Go repo.
The mechanism involves using linker flags to set variables: go -ldflags "-X main.VariableInMain=VALUE"※
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Contact me: Twitter or Mail Theme by Alex Popescu and inspired by Alasdair Monk's NewsiesDetails
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