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Explain the terms memtable, commitlog and sstables.
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Answer / Rajkumar Paswan
"Memtable" is an in-memory data structure used by Cassandra to store data before it gets written to a persistent storage. "CommitLog" is a log file where write operations are first recorded temporarily before they are flushed to the Memtable. "SSTables (Sorted String Table)" are the final persistent representation of the data in Cassandra, which get created when Memtables are compacted.
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