in google’s bigtable context, what does a commit log mean? and what is the use of a commit log?
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in google’s bigtable context, what does a commit log mean? and what is the use of a commit log?
In any database context, a “commit” is the application of a single transaction to the DB. A commit log is a record of transactions. It’s used to keep track of what’s happening, and help with e.g. disaster recovery – generally, all commits are written to the log before being applied, so transactions that were in flight when the server went down can be recovered and re-applied by checking the log.