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On 11/15/2013 06:38 AM, Kian-Tat Lim wrote: > Jacek, > >> Hmm, open source, persistent key-value store, just >> released by Facebook. > Umm, I don't see anything about failover or multiple masters. I > think this is a very different use case. It sounds like it might be > useful as the Tokyo Cabinet replacement for the objectId index. It's shared-memory, no distributed consistency, using two fusion io flash cards. They can do monster random writes to durable storage. fusion io got 1 billion iops from 8 cards, so they might do 250million iops for the 2 on the fb machine (though fb claimed 200k 4kb reads/sec), compared to the 90iops we get from spinning disk. Uh.... I wonder if zk does fsync in single-node to insure durability. Its strongest goals are strictly-ordered, maximally-durable, consistent distributed storage. -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