Hey there, I just stumbled upon an interesting distributed db implementation. It's designed to be ssd-backed, in-memory, nosql, thick-client, doc-store, with secondary indexing. They have a good writeup on their architecture and design choices. http://www.aerospike.com/docs/architecture/index.html https://github.com/aerospike/aerospike-server http://highscalability.com/blog/2014/5/6/the-quest-for-database-scale-the-1-m-tps-challenge-three-des.html Worth a read. The transaction rates they are claiming are scary, even for beefy hardware. -Daniel ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the QSERV-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=QSERV-L&A=1