Avery

Avery is a real-time time-based metric storage, retrieval, and graphing service.

Goals

• Web-service
• Generalized for any type of metric
• Real-time accessibility
• RRD-style Data Structure (Time series data)
• Wizard for creating data structures (TODO)
• JSON/PNG Export (TODO)
• Pretty colors (TODO)

Web-service

• NodeJS
• Hoard data-storage

RRD-style Data Structure (Time series data)

• see Hoard for more details - https://github.com/cgbystrom/hoard
• Note: as of writing this the master branch has not included many changes contributed by OMGPOP - https://github.com/OMGPOP/hoard

Example Usage

# npm install
# foreman start
# curl -d "value=20" -d "autocreate=true" localhost:5000/update/localhost/example
# open http://localhost:5000/watch/localhost/example

Example Graph

This is an example of a 30 minute time slice with 1 second updates (note how metric updates as applications report data).

Warning

Avery is still in active development.

deleting spikes

find the spot.

var hoard = require('hoard'); var time = 1330719540; var directory = "hoard_files/dst_paid/"; var filename = "instl.hoard"; hoard.fetch(directory+filename, time, time+240, function(err, timeInfo, values) { console.log(values); })

update the files.

var hoard = require('hoard'); var time = 1330719740; var directory = "hoard_files/dst_paid/"; require("fs").readdirSync(directory).filter(function(file){ return file.match(/^[^_].*.hoard$/) }).forEach(function(filename) { hoard.fetch(directory+filename, time, time+240, function(err, timeInfo, values) { if (values[1] != null) { hoard.update(directory+filename, values[1], time+60, function(err) { if (err) console.log(err) console.log("updated",filename,"from",values[0],"to",values[1]) }) } }) })

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Where did the name Avery come from? "real-time time-based metric storage, retrieval, and graphing service" or RTTBMSRAGS for short, was a very long name.