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riak-js Mathias Meyer, @roidrage, Riak Meetup NYC

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travis-ci.org

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riakhandbook.com

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riak-js

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simple node.js library for riak

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simple node.js library for riak

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heavily used in riak handbook

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ancient history

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first commit

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2 march 2010

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frank06/riak-js

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javascript

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port to coffeescript

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rewritten in javascript

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mostlyserious/riak-js

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senchalabs/riak-js

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mostlyserious/riak-js

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apply(roidrage)

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october 2011

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v0.4.1

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api changes

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november 2012

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v0.9.0

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simple interface

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riak = require('riak-js').getClient()

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riak.get('users', 'roidrage')

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user = {name: 'Mathias Meyer'} riak.save('users', 'roidrage', user)

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riak.get('users', 'roidrage', function(error, data) { console.log(data); } )

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riak.get('users', 'roidrage', function(error, data) { if (error.notFound) { console.log('User doesn't exist!'); } } )

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meta

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riak.get('users', 'roidrage', {r: 1});

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riak.get('users', 'roidrage', function(error, data, meta) { console.log(meta.vclock); } )

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reusable

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riak.get('users', 'roidrage', function(error, user, meta) { user.city = 'Berlin'; riak.save('users', 'roidrage', user, meta); } )

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links

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riak.save('users', 'roidrage', user, {links: [{bucket: 'users', key: 'tsantero', tag: 'bromance'}] });

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riak.walk('users', 'roidrage', [['users', '_', 'bromance']])

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map reduce

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riak.mapreduce.add('users'). map('Riak.mapValuesJson'). run()

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riak.mapreduce.add('users'). map(function(obj) { return [obj.values[0]]; }). run()

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javascript!

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riak.mapreduce.add('users'). map(function(v) { return [v.values[0].name]; }). reduce('Riak.reduceSort'). run()

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search

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riak.saveBucket('users', {search: true})

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riak.save('users', 'roidrage', {name: 'Mathias Meyer'});

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riak.search.find('users', 'name:Mathias*')

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search — map reduce

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riak.mapreduce.search('users', 'name:Mathias*'). map('Riak.mapValuesJson'). run()

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secondary indexes

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riak.save('users', 'roidrage', {name: 'Mathias Meyer'}, {index: {name: 'Mathias Meyer', born: 1977}});

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riak.query('users', {born: 1977})

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riak.query('users', {born: [1977, 1980]})

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instrumentation

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riak.registerListener({ 'riak.request.end': function(event) {}, 'riak.request.start': function(event) {} });

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metrics

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riak.registerListener({ 'riak.request.end': function(event) { var duration = event.finished_at - event.started_at, name = 'riak.request.' + event.method.toLowerCase(); metrics.timing(name, runtime); } });

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related: http://www.paperplanes.de/2012/12/27/a-plea-for-client-library-instrumentation.html

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the future

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protocol buffers

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custom agents

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reconciling conflicts

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riak.get('users', 'roidrage', function(error, data, meta) { if (meta.status == 300) { // merge siblings } } )

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riak.onConflict(function(siblings) { return siblings.reduce(...); })

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riak cs

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yokozuna