Re:CERN’s use of MongoDB for Large Hadron Collider data
by ergo98 on Thursday June 03, 2010 @03:06PM
(#1402177)
They don't give much details, but it sounds like a very superficial need that could be accommodated by Redis, Memcached, AppFabric, and on and on. Kind of surprised that they chose MongaDB as it's far from the fastest competitor.
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Re:CERN’s use of MongoDB for Large Hadron Collider data
by dschn on Thursday June 03, 2010 @03:35PM
(#1402268)
Just speculation, but the built-in map/reduce is probably quite useful.
Re:CERN’s use of MongoDB for Large Hadron Collider data
by ergo98 on Thursday June 03, 2010 @05:10PM
(#1402571)
Perhaps, but the description essentially said that there is a custom python layer that aggregates the data, and they punt it into MongoDB with some SQL extraction pattern simply to store it into that silo.
e.g. If I run a query for NAME LIKE 'BLAH%' it stores that resultset. If I run NAME LIKE 'BLAP%' it stores that resultset. If someone else comes and runs either of them, only a direct match will pull my prior results.
It's okay, but it's no big win or case study.
Re:CERN’s use of MongoDB for Large Hadron Collider data
by ehwizard on Thursday June 03, 2010 @09:11PM
(#1403186)
They needed to be able to do some queries on various indexes, so key/value stores wouldn't work. Also MongoDB tends to be only 10% slower then memcache, so not sure why you think its not fast...