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From Miriam Allalouf <>
Subject can you list and explain the different caches?
Date Sun, 18 Jul 2010 10:34:12 GMT

Cassandra documentation mention several caches that are used when
coming to retrieve a key / column as follows
Row or key  cache, Bloom Filter for key existence, column index cache,
sstable index file ,

I want to estimate lookups complexity and need detailed read I/O path.
I found that some of them are not relevant anymore, others are new and
relevant only for 0.6
( I looked in
and software details info)
Please, can you explain each one of them or refer to a detailed
description of the various caches at each node for Cassandra 0.6?

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