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Changelog

FerretDB

A truly Open Source MongoDB alternative

FerretDB/FerretDB

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NewNovember 10, 2025

v2.7.0

(We skipped v2.6.0 to align DocumentDB and FerretDB version numbers.)

This version works best with DocumentDB v0.107.0-ferretdb-2.7.0.

Breaking changes

There are some changes in our Prometheus metrics and OpenTelemetry traces. Please note that they are not stable yet.

What's Changed

Basic MCP server

This release adds basic MCP server support. Future release will bring additional functionality.

Connectivity improvements

PostgreSQL connections are now reused, often yielding modest performance gains.

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Use middleware by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5377
Use generated structs in Data API by @noisersup in https://github.com/FerretDB/FerretDB/pull/5382
Upload YugabyteDB log files by @chilagrow in https://github.com/FerretDB/FerretDB/pull/5401
Update documentation to point to the next release by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5423
Bump YugabyteDB to stable version by @chilagrow in https://github.com/FerretDB/FerretDB/pull/5428
Use QEMU on arm64 for Yugabyte for now by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5429
Add comments to supervisord config by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5430
Update DocumentDB by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5431
Make Run wait for all Handle calls to finish by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5434
Tweak conninfo by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5435
Add middleware by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5437
Update expected PostgreSQL version by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5438
Avoid hijacking connections from the pool and immediately closing them by @chilagrow in https://github.com/FerretDB/FerretDB/pull/5443
Remove flaky test by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5444
Add TODO comment about Debian 13 Trixie by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5450
Add MCP tools by @chilagrow in https://github.com/FerretDB/FerretDB/pull/5452
Bump deps by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5455
Update wire dependency by @noisersup in https://github.com/FerretDB/FerretDB/pull/5465
Add helpers for lazy logging by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5467
Move to documentdb/documentdb by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5468
Update dependencies by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5479
Add a test for *documentdb.Conn finalizing by @noisersup in https://github.com/FerretDB/FerretDB/pull/5484
Finalize PostgreSQL metrics by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5485
Fix spelling in .go files by @jsoref in https://github.com/FerretDB/FerretDB/pull/5492
Fix CODEOWNERS grammar by @jsoref in https://github.com/FerretDB/FerretDB/pull/5495
Use Go 1.25.1 by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5508
Bump deps by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5509
Minor observability cleanup by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5511
Bump dependencies by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5519
Use Go 1.25.3 by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5525
Skip flaky test for now by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5526
Use forked lazyerrors by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5527
Update DocumentDB by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5528
Use Go 1.25.4 by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5534
Bump DocumentDB by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5536
Bump deps by @AlekSi in https://github.com/FerretDB/FerretDB/pull/5537

FerretDB

v2.7.0

Breaking changes

What's Changed

Basic MCP server

Connectivity improvements

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v2.7.0

Breaking changes

What's Changed

Basic MCP server

Connectivity improvements

New Features 🎉

Enhancements 🛠

Documentation 📄

Other Changes 🤖

New Contributors

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