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Re:Fast key-value stores: An idea whose time has come and gone by StreamBright on Monday June 24, 2019 @10:37AM (#20263918)
Riak uses Mnesia?
Re:Fast key-value stores: An idea whose time has come and gone by ergl on Monday June 24, 2019 @11:37AM (#20264589)
Not that I know, but it uses ETS to handle state, and the global process registry to store peer information, as far as I know.

Also, be aware that OP mentioned riak-core, which is a different thing from Riak. riak-core is a library to build dynamo-style distributed applications, which gives you virtual nodes, consistent hashing and data migration as building blocks.

Re:Fast key-value stores: An idea whose time has come and gone by elcritch on Monday June 24, 2019 @01:23PM (#20265977)
Riak KV uses leveldb, but as @ergl mentioned, riak-core is essentially a hash-ring and replication (aka dynamo) layer.