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From Maciej Miklas <mac.mik...@googlemail.com>
Subject Re: Cassandra as session store under heavy load
Date Wed, 12 Oct 2011 06:28:16 GMT
- RF is 1. We have few KeySpaces, only this one is not replicated - this
data is not that very important. In case of error customer will have to
execute process again. But again, I would like to persist it.
- Serializing data is not an option, because I would like to have
possibility to access data using console
- I will keep row cache - you are right, there is no guarantee, that my data
is still in Memtable

I will get my hardware soon (3 servers) and we will see ;) In this worst
case I will switch my session storage to memcached, and leave all other data
in Cassandra (no TTL, or very long)

Another questions:
- Using Cassandra to build something like "HTTP session store" with short
TTL is not an anti-pattern ?
- There is really no way to tell Cassandra, that particular Key Space should
be stored "mostly" in RAM and only asynchronous backup on HDD (JMS has
something like that)?


Thanks,
Maciej

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