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RIEMANN - CORE CONCEPTS Send an event with the stacktrace. Small daemons can watch your servers and send events about disk capacity, CPU use, and memory consumption. Every second. It's like top for hundreds of machines at once. Riemann filters, combines, and acts on flows of events to understand your systems. RIEMANN - QUICKSTART Installing Riemann. Riemann's components are all configured to work out-of-the-box on localhost, and this quickstart assumes you'll be running everything locally.RIEMANN - CLIENTS
Clients. Client libraries to help you instrument your code. C. Daniel Hilst wrote a client in C, supporting both events and queries.. Gergely Nagy wrote another client in C, supporting both events and queries, but with a different API and goals.. C++. bigdatadev wrote a client in C++, supporting both events and queries, RAII, exceptions, move semantics and STL containers.RIEMANN - HOWTO
To connect the dashboard to a remote Riemann server, double-click the text box in the top right of the dashboard, and change the address from 127.0.0.1:5556 to your Riemann server's host and port. When you hit enter, the browser will initiate a websocket connectionRIEMANN - API
Quickstart Concepts Howto Clojure API Clients Dashboard Support Thanks Github Concepts Howto Clojure API Clients Dashboard Support ThanksGithub
RIEMANN - SUPPORT
Ask around. If you've got a personal inquiry, or just want to say thanks, feel free to email me directly. But if you need help with Riemann, please ask via IRC, the mailing list, or via Github Issues. You'll have a better chance of finding someone who can answer your question, and there'll be a record that other people with similarproblems can
RIEMANN.STREAMS DOCUMENTATION riemann.streams. The streams namespace aims to provide a comprehensive set of widely applicable, combinable tools for building more complex streams. Streams are functions which accept events or, in some cases, lists of events. Streams typically do one or more of the following.Filter events.
RIEMANN.CONFIG DOCUMENTATION Riemann config files are eval’d in the context of this namespace. Includes streams, client, email, logging, and graphite; the common functions used in config. RIEMANN - A NETWORK MONITORING SYSTEMQUICKSTARTCONCEPTSHOWTOAPICLIENTSDASHBOARD Riemann. monitors distributed systems. This opens in a new window. Riemann aggregates events from your servers and applications with a powerful stream processing language. Send an email for every exception in your app. Track the latency distribution of your web app. See the top processes on any host, by memory and CPU. RIEMANN - DASHBOARDS A realtime JS dashboard. Riemann-dash 0.2.0 is here. It uses websockets and some terrifying javascript to let you compose fully interactive, low-latency visualizations of Riemann's index. 0.2.0 includes a tiling window manager. Each workspace (top right) is an arrangement of views. Each view is a single query, visualized in aspecific way.
RIEMANN - CORE CONCEPTS Send an event with the stacktrace. Small daemons can watch your servers and send events about disk capacity, CPU use, and memory consumption. Every second. It's like top for hundreds of machines at once. Riemann filters, combines, and acts on flows of events to understand your systems. RIEMANN - QUICKSTART Installing Riemann. Riemann's components are all configured to work out-of-the-box on localhost, and this quickstart assumes you'll be running everything locally.RIEMANN - CLIENTS
Clients. Client libraries to help you instrument your code. C. Daniel Hilst wrote a client in C, supporting both events and queries.. Gergely Nagy wrote another client in C, supporting both events and queries, but with a different API and goals.. C++. bigdatadev wrote a client in C++, supporting both events and queries, RAII, exceptions, move semantics and STL containers.RIEMANN - HOWTO
To connect the dashboard to a remote Riemann server, double-click the text box in the top right of the dashboard, and change the address from 127.0.0.1:5556 to your Riemann server's host and port. When you hit enter, the browser will initiate a websocket connectionRIEMANN - API
Quickstart Concepts Howto Clojure API Clients Dashboard Support Thanks Github Concepts Howto Clojure API Clients Dashboard Support ThanksGithub
RIEMANN - SUPPORT
Ask around. If you've got a personal inquiry, or just want to say thanks, feel free to email me directly. But if you need help with Riemann, please ask via IRC, the mailing list, or via Github Issues. You'll have a better chance of finding someone who can answer your question, and there'll be a record that other people with similarproblems can
RIEMANN.STREAMS DOCUMENTATION riemann.streams. The streams namespace aims to provide a comprehensive set of widely applicable, combinable tools for building more complex streams. Streams are functions which accept events or, in some cases, lists of events. Streams typically do one or more of the following.Filter events.
RIEMANN.CONFIG DOCUMENTATION Riemann config files are eval’d in the context of this namespace. Includes streams, client, email, logging, and graphite; the common functions used in config. RIEMANN.STREAMS DOCUMENTATION riemann.streams. The streams namespace aims to provide a comprehensive set of widely applicable, combinable tools for building more complex streams. Streams are functions which accept events or, in some cases, lists of events. Streams typically do one or more of the following.Filter events.
RIEMANN.TEST DOCUMENTATION Fast, end-to-end, repeatable testing for entire Riemann configs. Provides a tap macro which taps the event stream and (in testing mode) records all events that flow through that stream. Provides a variant of deftest that initiates controlled time and sets up a fresh result set for taps, and a function inject! to apply events to streams and see what each tap received.RIEMANN 0.3.6
Fast, end-to-end, repeatable testing for entire Riemann configs. Provides a tap macro which taps the event stream and (in testing mode) records all events that flow through that stream. Provides a variant of deftest that initiates controlled time and sets up a fresh result set for taps, and a function inject! to apply events to streams and see what each tap received. RIEMANN.STREAMS.PURE DOCUMENTATION Riemann streams have performed exceptionally well, but their design scope was intentionally limited. Users consistently request: Consistent behavior with respect to time intervals RIEMANN.SERVICE DOCUMENTATION Like executor-service, but captures the expression passed to it as the equivalence key. This only works if the expression is literal; if there are any variables or function calls, they will be compared as code, not as their evaluated values. RIEMANN.FOLDS DOCUMENTATION Sample a sequence of events at points. Returns events with service remapped to (str service “ ” point). For instance, (sorted-sample events ) returns a 2-element seq RIEMANN.CONFIG DOCUMENTATION Riemann config files are eval’d in the context of this namespace. Includes streams, client, email, logging, and graphite; the common functions used in config. RIEMANN.LOGGING DOCUMENTATION Set the level for the given logger, by string name. Example: (set-level Level/INFO) or (set-level “riemann.client”,Level/DEBUG)
RIEMANN.TRANSPORT DOCUMENTATION Functions used in several transports. Some netty parts transpire here since netty is the preferred method of providing transports RIEMANN.TRANSPORT.UDP DOCUMENTATION Starts a new UDP server. Doesn’t start until (service/start!). IMPORTANT: The UDP server has a maximum datagram size–by default,16384 bytes.
RIEMANN - A NETWORK MONITORING SYSTEMQUICKSTARTCONCEPTSHOWTOAPICLIENTSDASHBOARD Riemann. monitors distributed systems. This opens in a new window. Riemann aggregates events from your servers and applications with a powerful stream processing language. Send an email for every exception in your app. Track the latency distribution of your web app. See the top processes on any host, by memory and CPU. RIEMANN - DASHBOARDS A realtime JS dashboard. Riemann-dash 0.2.0 is here. It uses websockets and some terrifying javascript to let you compose fully interactive, low-latency visualizations of Riemann's index. 0.2.0 includes a tiling window manager. Each workspace (top right) is an arrangement of views. Each view is a single query, visualized in aspecific way.
RIEMANN - CORE CONCEPTS Send an event with the stacktrace. Small daemons can watch your servers and send events about disk capacity, CPU use, and memory consumption. Every second. It's like top for hundreds of machines at once. Riemann filters, combines, and acts on flows of events to understand your systems. RIEMANN - QUICKSTART Installing Riemann. Riemann's components are all configured to work out-of-the-box on localhost, and this quickstart assumes you'll be running everything locally.RIEMANN - CLIENTS
Clients. Client libraries to help you instrument your code. C. Daniel Hilst wrote a client in C, supporting both events and queries.. Gergely Nagy wrote another client in C, supporting both events and queries, but with a different API and goals.. C++. bigdatadev wrote a client in C++, supporting both events and queries, RAII, exceptions, move semantics and STL containers.RIEMANN - HOWTO
To connect the dashboard to a remote Riemann server, double-click the text box in the top right of the dashboard, and change the address from 127.0.0.1:5556 to your Riemann server's host and port. When you hit enter, the browser will initiate a websocket connectionRIEMANN - API
Quickstart Concepts Howto Clojure API Clients Dashboard Support Thanks Github Concepts Howto Clojure API Clients Dashboard Support ThanksGithub
RIEMANN - SUPPORT
Ask around. If you've got a personal inquiry, or just want to say thanks, feel free to email me directly. But if you need help with Riemann, please ask via IRC, the mailing list, or via Github Issues. You'll have a better chance of finding someone who can answer your question, and there'll be a record that other people with similarproblems can
RIEMANN.TEST DOCUMENTATION Fast, end-to-end, repeatable testing for entire Riemann configs. Provides a tap macro which taps the event stream and (in testing mode) records all events that flow through that stream. Provides a variant of deftest that initiates controlled time and sets up a fresh result set for taps, and a function inject! to apply events to streams and see what each tap received. RIEMANN.STREAMS DOCUMENTATION riemann.streams. The streams namespace aims to provide a comprehensive set of widely applicable, combinable tools for building more complex streams. Streams are functions which accept events or, in some cases, lists of events. Streams typically do one or more of the following.Filter events.
RIEMANN - A NETWORK MONITORING SYSTEMQUICKSTARTCONCEPTSHOWTOAPICLIENTSDASHBOARD Riemann. monitors distributed systems. This opens in a new window. Riemann aggregates events from your servers and applications with a powerful stream processing language. Send an email for every exception in your app. Track the latency distribution of your web app. See the top processes on any host, by memory and CPU. RIEMANN - DASHBOARDS A realtime JS dashboard. Riemann-dash 0.2.0 is here. It uses websockets and some terrifying javascript to let you compose fully interactive, low-latency visualizations of Riemann's index. 0.2.0 includes a tiling window manager. Each workspace (top right) is an arrangement of views. Each view is a single query, visualized in aspecific way.
RIEMANN - CORE CONCEPTS Send an event with the stacktrace. Small daemons can watch your servers and send events about disk capacity, CPU use, and memory consumption. Every second. It's like top for hundreds of machines at once. Riemann filters, combines, and acts on flows of events to understand your systems. RIEMANN - QUICKSTART Installing Riemann. Riemann's components are all configured to work out-of-the-box on localhost, and this quickstart assumes you'll be running everything locally.RIEMANN - CLIENTS
Clients. Client libraries to help you instrument your code. C. Daniel Hilst wrote a client in C, supporting both events and queries.. Gergely Nagy wrote another client in C, supporting both events and queries, but with a different API and goals.. C++. bigdatadev wrote a client in C++, supporting both events and queries, RAII, exceptions, move semantics and STL containers.RIEMANN - HOWTO
To connect the dashboard to a remote Riemann server, double-click the text box in the top right of the dashboard, and change the address from 127.0.0.1:5556 to your Riemann server's host and port. When you hit enter, the browser will initiate a websocket connectionRIEMANN - API
Quickstart Concepts Howto Clojure API Clients Dashboard Support Thanks Github Concepts Howto Clojure API Clients Dashboard Support ThanksGithub
RIEMANN - SUPPORT
Ask around. If you've got a personal inquiry, or just want to say thanks, feel free to email me directly. But if you need help with Riemann, please ask via IRC, the mailing list, or via Github Issues. You'll have a better chance of finding someone who can answer your question, and there'll be a record that other people with similarproblems can
RIEMANN.TEST DOCUMENTATION Fast, end-to-end, repeatable testing for entire Riemann configs. Provides a tap macro which taps the event stream and (in testing mode) records all events that flow through that stream. Provides a variant of deftest that initiates controlled time and sets up a fresh result set for taps, and a function inject! to apply events to streams and see what each tap received. RIEMANN.STREAMS DOCUMENTATION riemann.streams. The streams namespace aims to provide a comprehensive set of widely applicable, combinable tools for building more complex streams. Streams are functions which accept events or, in some cases, lists of events. Streams typically do one or more of the following.Filter events.
RIEMANN 0.3.6
Fast, end-to-end, repeatable testing for entire Riemann configs. Provides a tap macro which taps the event stream and (in testing mode) records all events that flow through that stream. Provides a variant of deftest that initiates controlled time and sets up a fresh result set for taps, and a function inject! to apply events to streams and see what each tap received. RIEMANN.TEST DOCUMENTATION Fast, end-to-end, repeatable testing for entire Riemann configs. Provides a tap macro which taps the event stream and (in testing mode) records all events that flow through that stream. Provides a variant of deftest that initiates controlled time and sets up a fresh result set for taps, and a function inject! to apply events to streams and see what each tap received. RIEMANN.STREAMS DOCUMENTATION riemann.streams. The streams namespace aims to provide a comprehensive set of widely applicable, combinable tools for building more complex streams. Streams are functions which accept events or, in some cases, lists of events. Streams typically do one or more of the following.Filter events.
RIEMANN.COMMON DOCUMENTATION Fetches the hostname by shelling out to hostname (1), whenever the given age is stale enough. If the given age is recent, as defined by hostname-refresh-interval, returns age and val instead. RIEMANN.STREAMS.PURE DOCUMENTATION Riemann streams have performed exceptionally well, but their design scope was intentionally limited. Users consistently request: Consistent behavior with respect to time intervals RIEMANN.TIME DOCUMENTATION Clocks and scheduled tasks. Provides functions for getting the current time and running functions (Tasks) at specific times and periods. Includes a threadpool for RIEMANN.CONFIG DOCUMENTATION Riemann config files are eval’d in the context of this namespace. Includes streams, client, email, logging, and graphite; the common functions used in config. RIEMANN.LOGGING DOCUMENTATION Set the level for the given logger, by string name. Example: (set-level Level/INFO) or (set-level “riemann.client”,Level/DEBUG)
RIEMANN.POOL DOCUMENTATION A fixed pool of thingys. (open) is called to generate a thingy. (close thingy) is called when a thingy is invalidated. When thingys are invalidated, the pool will immediately try to open a new one; if open throws or returns nil, the pool will sleep for regenerate-interval seconds before retrying (open). RIEMANN.LOGSTASH DOCUMENTATION Returns a function which accepts an event and sends it to logstash. Silently drops events when logstash is down. Attempts to reconnect automatically every five seconds. RIEMANN - A NETWORK MONITORING SYSTEMQUICKSTARTCONCEPTSHOWTOAPICLIENTSDASHBOARD Powerful stream primitives (where (or (service # "^api") (service # "^app")) (where (tagged "exception") (rollup 5 3600 (email "dev@foo.com")) (else (changed-state (email "ops@foo.com")))))Riemann streams are just functions which accept an event. Events are just structs with some common fields like :host and :service You can use dozens of built-in streams for filtering, altering, and combining RIEMANN - DASHBOARDS Help Out! Frontend design is not my strong suit. The dashboard is full of rough edges, and though I've put several hundred hours into it thisis just the start.
RIEMANN - CORE CONCEPTS We need to detect state transitions for each service independently, so we'll start by splitting the event stream with (by). (by )The (by) stream is like a river delta, or a fuel manifold. It splits the event stream into n distinct streams, each oneindependent.
RIEMANN - CLIENTS
Clients. Client libraries to help you instrument your code. C. Daniel Hilst wrote a client in C, supporting both events and queries.. Gergely Nagy wrote another client in C, supporting both events and queries, but with a different API and goals.. C++. bigdatadev wrote a client in C++, supporting both events and queries, RAII, exceptions, move semantics and STL containers.RIEMANN - HOWTO
Riemann-dash only serves some JS code and a small piece of configuration; when you open riemann-dash in the browser, it'll open connections from your browser to the Riemann server's websocket interface to receive events. RIEMANN - QUICKSTARTBERNHARD RIEMANNRIEMANN FUNERAL HOMERIEMANN HYPOTHESIS SOLVEDRIEMANN INTEGRALRIEMANN SUM Installing Riemann. Riemann's components are all configured to work out-of-the-box on localhost, and this quickstart assumes you'll be running everything locally.RIEMANN - API
Quickstart Concepts Howto Clojure API Clients Dashboard Support Thanks Github Concepts Howto Clojure API Clients Dashboard Support ThanksGithub
RIEMANN - SUPPORT
IRC Channel. Hop over to irc.libera.chat and join #riemann. There are a bunch of experienced users in channel who can help answer questions. If you don't get a response right away, try to stay in channel--we all have to sleep sometimes, but try to answer questions in scrollback. RIEMANN - JUST ENOUGH CLOJURERIEMANN FUNERAL HOMERIEMANN HYPOTHESIS SOLVEDRIEMANN INTEGRALRIEMANN SUMRIEMANN SUM CALCULATOR Next we need to run lein to auto-install its supporting libraries. $ lein This will download Leiningen's supporting Jar file. Finally, we can run REPL using the lein repl sub-command. $ lein repl user => This will download Clojure itself (in the form of its Jar file) and launch our interactive Clojure shell. RIEMANN.STREAMS DOCUMENTATION Passes on a changed version of each event by applying a function to a particular field or to the event as a whole. Passing a vector of to adjust will modify the given field in incoming events by applying the function to it along with the givenarguments.
RIEMANN - A NETWORK MONITORING SYSTEMQUICKSTARTCONCEPTSHOWTOAPICLIENTSDASHBOARD Powerful stream primitives (where (or (service # "^api") (service # "^app")) (where (tagged "exception") (rollup 5 3600 (email "dev@foo.com")) (else (changed-state (email "ops@foo.com")))))Riemann streams are just functions which accept an event. Events are just structs with some common fields like :host and :service You can use dozens of built-in streams for filtering, altering, and combining RIEMANN - DASHBOARDS Help Out! Frontend design is not my strong suit. The dashboard is full of rough edges, and though I've put several hundred hours into it thisis just the start.
RIEMANN - CORE CONCEPTS We need to detect state transitions for each service independently, so we'll start by splitting the event stream with (by). (by )The (by) stream is like a river delta, or a fuel manifold. It splits the event stream into n distinct streams, each oneindependent.
RIEMANN - CLIENTS
Clients. Client libraries to help you instrument your code. C. Daniel Hilst wrote a client in C, supporting both events and queries.. Gergely Nagy wrote another client in C, supporting both events and queries, but with a different API and goals.. C++. bigdatadev wrote a client in C++, supporting both events and queries, RAII, exceptions, move semantics and STL containers.RIEMANN - HOWTO
Riemann-dash only serves some JS code and a small piece of configuration; when you open riemann-dash in the browser, it'll open connections from your browser to the Riemann server's websocket interface to receive events. RIEMANN - QUICKSTARTBERNHARD RIEMANNRIEMANN FUNERAL HOMERIEMANN HYPOTHESIS SOLVEDRIEMANN INTEGRALRIEMANN SUM Installing Riemann. Riemann's components are all configured to work out-of-the-box on localhost, and this quickstart assumes you'll be running everything locally.RIEMANN - API
Quickstart Concepts Howto Clojure API Clients Dashboard Support Thanks Github Concepts Howto Clojure API Clients Dashboard Support ThanksGithub
RIEMANN - SUPPORT
IRC Channel. Hop over to irc.libera.chat and join #riemann. There are a bunch of experienced users in channel who can help answer questions. If you don't get a response right away, try to stay in channel--we all have to sleep sometimes, but try to answer questions in scrollback. RIEMANN - JUST ENOUGH CLOJURERIEMANN FUNERAL HOMERIEMANN HYPOTHESIS SOLVEDRIEMANN INTEGRALRIEMANN SUMRIEMANN SUM CALCULATOR Next we need to run lein to auto-install its supporting libraries. $ lein This will download Leiningen's supporting Jar file. Finally, we can run REPL using the lein repl sub-command. $ lein repl user => This will download Clojure itself (in the form of its Jar file) and launch our interactive Clojure shell. RIEMANN.STREAMS DOCUMENTATION Passes on a changed version of each event by applying a function to a particular field or to the event as a whole. Passing a vector of to adjust will modify the given field in incoming events by applying the function to it along with the givenarguments.
RIEMANN.STREAMS DOCUMENTATION Splits stream by field. Every time an event arrives with a new value of field, this macro invokes its child forms to return a new, distinct set of streams for that particular value. (rate 5 prn) prints a single rate for all events, once every five seconds. RIEMANN.TEST DOCUMENTATION Fast, end-to-end, repeatable testing for entire Riemann configs. Provides a tap macro which taps the event stream and (in testing mode) records all events that flow through that stream. Provides a variant of deftest that initiates controlled time and sets up a fresh result set for taps, and a function inject! to apply events to streams and see what each tap received.RIEMANN 0.3.6
Fast, end-to-end, repeatable testing for entire Riemann configs. Provides a tap macro which taps the event stream and (in testing mode) records all events that flow through that stream. Provides a variant of deftest that initiates controlled time and sets up a fresh result set for taps, and a function inject! to apply events to streams and see what each tap received. RIEMANN.STREAMS.PURE DOCUMENTATION Riemann streams have performed exceptionally well, but their design scope was intentionally limited. Users consistently request: Consistent behavior with respect to time intervals RIEMANN.INDEX DOCUMENTATION Maintains a stateful index of events by key. Can be queried to return the most recent indexed events matching someexpression.
RIEMANN.FOLDS DOCUMENTATION Sample a sequence of events at points. Returns events with service remapped to (str service “ ” point). For instance, (sorted-sample events ) returns a 2-element seq RIEMANN.COMMON DOCUMENTATION count-string-bytes. custom-attributes. decode-inputstream RIEMANN.LOGGING DOCUMENTATION Set the level for the given logger, by string name. Example: (set-level Level/INFO) or (set-level “riemann.client”,Level/DEBUG)
RIEMANN.CONFIG DOCUMENTATION Riemann config files are eval’d in the context of this namespace. Includes streams, client, email, logging, and graphite; the common functions used in config. RIEMANN.SNS DOCUMENTATION Publish to AWS SNS topic(s) about events. Create a publisher with (sns-publisher opts), then create streams which publish to topic(s) with (your-publisher “your::arn”). Quickstart Concepts Howto Clojure API ClientsDashboard Support
Thanks Github
RIEMANN MONITORS DISTRIBUTED SYSTEMS. Riemann aggregates events from your servers and applications with a powerful stream processing language. Send an email for every exception in your app. Track the latency distribution of your web app. See the top processes on any host, by memory and CPU. Combine statistics from every Riak node in your cluster and forward to Graphite. Track user activity from second to second. Riemann provides _low-latency, transient shared state_ for systems with many moving parts. DOWNLOAD RIEMANN 0.3.5EL7
EL6
POWERFUL STREAM PRIMITIVES (where (or (service #"^api")(service #"^app"))
(where (tagged "exception")(rollup 5 3600
(email "dev@foo.com"))(else
(changed-state
(email "ops@foo.com"))))) Riemann streams are just functions which accept an event. Events are just structs with some common fields like :host and :service You can use dozens of built-in streams for filtering, altering, and combining events , or write your own. Since Riemann's configuration is a _Clojure program_, its syntax is concise, regular, and extendable. Configuration-as-code minimizes boilerplate and gives you the flexibility to adapt to complexsituations.
I wrote Riemann for operations staff trying to keep a large, dynamic infrastructure running with unreliable but fault-tolerant components. For engineers who need to understand the source of errors and performance bottlenecks in production. For everyone fed up with traditional approaches; who want something fast, expressive, andpowerful.
ALL SYSTEMS GO
A small, extendable Sinatra app shows your system at a glance. Instantly identify hotspots, down services, and unbalancedloads.
PHONE, SMS AND EMAIL ALERTS(rollup 5 3600
(email "dev@startup.com")) Riemann can tell you as much or as little as you want. Throttle or roll up multiple events into a single messages. Get emails about exceptions in your code, provider downtime, or latency spikes. You can also integrate with PagerDuty for SMS or phone alerts.GRAPH EVERYTHING
(graphite {:host "graphs.pdx"}) Like Statsd , Riemann can forward any event stream to Graphite . Librato Metrics integration? Built in.SIMPLE CLIENTS
r = Riemann::Client.new r << {service: "www", state: "down", metric: 10000}r
# =>
Riemann speaks Protocol Buffers over TCP and UDP for a compact, portable, and fast wire protocol. Seethe Ruby client
as a guide.
QUERY STATES
state = "error rate" and (not host =~ "www.%") Search the Riemann index with a small query language. Clients can monitor each other, generate reports, or render dashboards. Riemann queries form the basis for the realtime websockets dashboard, showing updated events as soon as they arrive.SEE PROBLEMS FASTER
Traditional monitoring systems run polling loops every five minutes, or roll up metrics on a minutely basis. In a Riemann infrastructure, clients (including stand-alone pollers) *push* their events to Riemann, which makes them visible within milliseconds. Low latencies let you see outages faster--and know the instant you've fixed theproblem.
Throughput depends on what your streams *do* with events, but a stock Riemann config on commodity x86 hardware can handle *millions* of events per second at sub-ms latencies, with 99ths around 5ms. Riemann is fully parallel and leverages Clojure and JVM concurrency primitivesthroughout.
BROUGHT TO YOU BY… Riemann was made possible by the hard work of many open-source contributors. Everyone who's offered advice, asked questions, and submitted code has my deepest appreciation. I wrote Riemann to help solve problems at work: both Showyou and Boundary deserve thanks for letting me build this crazy thing and share it with the world. Librato sponsored the Librato Metrics integration. Blue Mountain Capital donated to help make Riemannfaster.
Riemann uses YourKit for performance analysis. YourKit is kindly supporting open source projects with its full-featured Java Profiler. YourKit, LLC is the creator of innovative and intelligent tools for profiling Java and .NET applications. Take a look at YourKit's leading software products: YourKit Java Profilerand YourKit .NET
Profiler .
Riemann is written by Kyle Kingsbury , together with Pierre-Yves Ritschard , James Turnbull , and dozens of terrific contributors . Get in touch through our support channels.
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