Re: Loading data on-demand in Cassandra

2012-11-08 Thread sal
Pierre Chalamet chalamet.net> writes: > > Hi,You do not need to have 700 Go of data in RAM. Cassandra is able to store on disks and query from there if data is not cached in memory. Caches are maintained by C* by itself but you still have to some configuration.Supposing you want to store around

Re: Loading data on-demand in Cassandra

2012-08-13 Thread Pierre Chalamet
Hi, You do not need to have 700 Go of data in RAM. Cassandra is able to store on disks and query from there if data is not cached in memory. Caches are maintained by C* by itself but you still have to some configuration. Supposing you want to store around 800 Go and with a RF=3, you will need a

Re: Loading data on-demand in Cassandra

2012-08-12 Thread Oliver Plohmann
Thanks Dave. Does anybody know of a distributed in-memory system that can do this and that supports structured data (e.g. tables)? /Oliver Am 12.08.2012 um 21:39 schrieb Dave Brosius : > When data is first written it does remain in memory until that memory is > flushed. After the data is only

Re: Loading data on-demand in Cassandra

2012-08-12 Thread Dave Brosius
When data is first written it does remain in memory until that memory is flushed. After the data is only on disk, it remains there until a read for that row-key/column is requested so in essense it's always load on demand. Currently there is no support for async notifications of changes. On