MongoDB
change data capture
TwinCommit captures changes from MongoDB by reading its transaction log directly, then delivers each committed transaction exactly once to any supported target. Change streams in, transactional bulk upserts out.
MongoDB
MongoDB 5.0–8.x · MongoDB Atlas · replica sets and sharded clusters
- ✓Replica set or sharded cluster (change streams need an oplog)
- ✓changeStream and find privileges on watched databases
- ✓Pre- and post-images enabled for full before/after values (optional)
Capture
How TwinCommit reads MongoDB
TwinCommit opens change streams on replica sets and sharded clusters, persists resume tokens with the checkpoint, and keeps multi-document transactions intact.
MongoDB source docs →Apply
How TwinCommit writes to MongoDB
Relational rows become documents keyed by primary key and are written with bulkWrite upserts inside MongoDB transactions, together with the checkpoint.
MongoDB target docs →Replicate MongoDB to…
MongoDB connector FAQ
Which MongoDB versions does TwinCommit support?
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MongoDB 5.0–8.x · MongoDB Atlas · replica sets and sharded clusters.
Does TwinCommit install anything in MongoDB?
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No. TwinCommit reads the MongoDB log and creates no triggers, tables or procedures in the source database.
How does TwinCommit write to MongoDB?
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Relational rows become documents keyed by primary key and are written with bulkWrite upserts inside MongoDB transactions, together with the checkpoint.
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