MongoDB replication - oplogSize
Read OriginalThis technical article details MongoDB's oplog (operations log), a capped collection crucial for replication. It explains how oplog size determines how long a secondary node can be offline and still catch up, covers configuration via the --oplogSize argument, and discusses a specific bug in MongoDB version 1.6.5 on Windows that affected size setting. It also references a method for resizing an existing oplog in later versions.
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