Riak2.0のData Types ref: http://qiita.com/hiroeorz@github/items/c4b162c6a013cfc3e108

file0.txt

$ riak-admin bucket-type create maps '{"props":{"datatype":"map"}}'
maps created

$ riak-admin bucket-type create sets '{"props":{"datatype":"set"}}'
sets created

$ riak-admin bucket-type create counters '{"props":{"datatype":"counter"}}'
counters created

file1.txt

$ riak-admin bucket-typs <bucket名>

file10.txt

$ curl http://localhost:8097/types/counters/buckets/counters/datatypes/traffic_tickets
{"type":"counter","value":11}

file12.txt

$ bundle exec irb

file2.txt

$ riak-admin bucket-type activate maps
maps has been activated

file3.txt

$ riak-admin bucket-type activate sets
sets has been activated

$ riak-admin bucket-type activate counters
counters has been activated

file4.txt

$ git clone https://github.com/basho/riak-ruby-client.git
$ cd riak-ruby-client
$ bundle install --path vendor/bundle
$ bundle exec irb
>

file8.txt

$ curl http://localhost:8098/types/counters/buckets/counters/datatypes/traffic_tickets
{"type":"counter","value":1}

irb

mike.registers["name"]      #=> "mike"
mike.registers["age"]       #=> "3"
mike.flags["male"]          #=> false
mike.counters["nya-"].value #=> 1

irb1

require "riak"
client = Riak::Client.new(nodes:[{:host => "127.0.0.1", :pb_port => 8087}])
bucket = client.bucket("counters")
counter = Riak::Crdt::Counter.new(bucket, 'traffic_tickets', 'counters')
counter.value #=> 11

# irb1側からインクリメント
counter.increment