More NOSQL Erlang database options including Riak CouchDB Mnesia. Redis still looks best!!
This is a good resourcebelow for this comparison:
CouchDB: Best used: For accumulating, occasionally changing data, on which pre-defined queries are to be run. Places where versioning is important.
No good for me
Couchbase looks interesting:
Best used: Any application where low-latency data access, high concurrency support and high availability is a requirement.
For example: Low-latency use-cases like ad targeting or highly-concurrent web apps like online gaming (e.g. Zynga). (200k/second works!) I know some homegrown in memory versions are up 750K/second
Aerospike has no stats here but still waiting from the vendor.
Kyoto Tycoon used for stocks analysis
I do also see Redis is used for: To store real-time stock prices. Real-time analytics. <– This does appear to still be the winner as explained in my video
NOTE: The graph database options may be good for machine learning as in Neo4J. I do think the Goldman Sachs SecDb is built around this technology
All ideas from: http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-vs-redisFACEBOOK ACCOUNT and TWITTER. Don't worry as I don't post stupid cat videos or what I eat!