Explain How Cassandra Writes Changed Data Into Commitlog?

1.	Explain How Cassandra Writes Changed Data Into Commitlog?
Answer» Cassandra concatenate CHANGED data to commitlog Commitlog acts as a crash recovery log for data Until the changed data is CONCATENATED to commitlog WRITE OPERATION will be never considered successful Data will not be lost once commitlog is FLUSHED out to file. Cassandra concatenate changed data to commitlog Data will not be lost once commitlog is flushed out to file.

Answer»

Cassandra concatenate CHANGED data to commitlog

Commitlog acts as a crash recovery log for data
Until the changed data is CONCATENATED to commitlog WRITE OPERATION will be never considered successful

Data will not be lost once commitlog is FLUSHED out to file.

Cassandra concatenate changed data to commitlog

Data will not be lost once commitlog is flushed out to file.

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