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riak-js
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Mathias Meyer
January 17, 2013
Programming
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riak-js
History and tour of riak-js, the Node.js client for Riak.
Mathias Meyer
January 17, 2013
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Transcript
riak-js Mathias Meyer, @roidrage, Riak Meetup NYC
travis-ci.org
riakhandbook.com
riak-js
simple node.js library for riak
simple node.js library for riak
heavily used in riak handbook
ancient history
first commit
2 march 2010
frank06/riak-js
javascript
port to coffeescript
rewritten in javascript
mostlyserious/riak-js
senchalabs/riak-js
mostlyserious/riak-js
apply(roidrage)
october 2011
v0.4.1
api changes
november 2012
v0.9.0
simple interface
riak = require('riak-js').getClient()
riak.get('users', 'roidrage')
user = {name: 'Mathias Meyer'} riak.save('users', 'roidrage', user)
riak.get('users', 'roidrage', function(error, data) { console.log(data); } )
riak.get('users', 'roidrage', function(error, data) { if (error.notFound) { console.log('User doesn't
exist!'); } } )
meta
riak.get('users', 'roidrage', {r: 1});
riak.get('users', 'roidrage', function(error, data, meta) { console.log(meta.vclock); } )
reusable
riak.get('users', 'roidrage', function(error, user, meta) { user.city = 'Berlin'; riak.save('users',
'roidrage', user, meta); } )
links
riak.save('users', 'roidrage', user, {links: [{bucket: 'users', key: 'tsantero', tag: 'bromance'}]
});
riak.walk('users', 'roidrage', [['users', '_', 'bromance']])
map reduce
riak.mapreduce.add('users'). map('Riak.mapValuesJson'). run()
riak.mapreduce.add('users'). map(function(obj) { return [obj.values[0]]; }). run()
javascript!
riak.mapreduce.add('users'). map(function(v) { return [v.values[0].name]; }). reduce('Riak.reduceSort'). run()
search
riak.saveBucket('users', {search: true})
riak.save('users', 'roidrage', {name: 'Mathias Meyer'});
riak.search.find('users', 'name:Mathias*')
search — map reduce
riak.mapreduce.search('users', 'name:Mathias*'). map('Riak.mapValuesJson'). run()
secondary indexes
riak.save('users', 'roidrage', {name: 'Mathias Meyer'}, {index: {name: 'Mathias Meyer', born:
1977}});
riak.query('users', {born: 1977})
riak.query('users', {born: [1977, 1980]})
instrumentation
riak.registerListener({ 'riak.request.end': function(event) {}, 'riak.request.start': function(event) {} });
metrics
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); } });
related: http://www.paperplanes.de/2012/12/27/a-plea-for-client-library-instrumentation.html
the future
protocol buffers
custom agents
reconciling conflicts
riak.get('users', 'roidrage', function(error, data, meta) { if (meta.status == 300)
{ // merge siblings } } )
riak.onConflict(function(siblings) { return siblings.reduce(...); })
riak cs
yokozuna