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From Viktor Jevdokimov <>
Subject Reads and memory usage clarification
Date Tue, 22 Feb 2011 09:32:32 GMT

Write path is perfectly documented in architecture overview.

I need Reads to be clarified:

How memory is used
1. When data is in the Memtable
2. When data is in the SSTable

How cache is used alongside with Memtable?

Are records created in the Memtable from writes only or from reads also?

What I need to know is, how Cassandra uses memory and Memtables for reads?

Thenk you,

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