Understanding MongoDB's Oplog Mechanism
MongoDB Oplog Fundamentals
The oplog (operation log) is a capped collection in MongoDB's local database that records all data modification operations. It serves as the foundation for replication in MongoDB replica sets, allowing secondary nodes to synchronize with the primary by replaying these operations.
Oplog Structure and Characteristics
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Posted on Thu, 15 Oct 2026 16:23:50 +0000 by newb110508