Monthly Archives: November 2025

3.5.1

Dear community,

Apache CouchDB® 3.5.1 has been released and is available for download.

CouchDB 3.5.1 is a maintenance release, and was originally published on 2025-11-11.

https://couchdb.apache.org/#download

Pre-built packages for Windows, macOS, Debian/Ubuntu and RHEL/CentOS, as well as Docker images are available.

Release Notes highlights:

  • Native support for UUIDv7 automatic _id generation
  • Various performance improvements for purge, bulk endpoints and btree caching
  • A large number of clean ups and bug fixes

Special Notice Heads Up:

  • The next feature version of CouchDB (3.6.0) will switch to using the QuickJS engine for all JavaScript operations by default. SpiderMonkey will remain available on supported platforms, but it is causing an increasing strain on testing and release engineering, so the project is starting to make the switch.
  • To ready yourself for the upgrade, you can run the new Background Scanner feature1 and have your existing JavaScript code be analysed to see if it will behave as expected under QuickJS. Modern JavaScript running on modern (> version 1.8.5) SpiderMonkey should translate seamlessly. Refer to our documented list2 of differences between various engine types and versions.
  • Please note that due to platform support, RHEL 10 and AlmaLinux 10 binaries of 3.5.1 are already only shipping with QuickJS.

See the official release notes document for an exhaustive list of all changes:

https://docs.couchdb.org/en/stable/whatsnew/3.5.html

Apache CouchDB® lets you access your data where you need it. The Couch Replication Protocol is implemented in a variety of projects and products that span every imaginable computing environment from globally distributed server-clusters, over mobile phones to web browsers.

Store your data safely, on your own servers, or with any leading cloud provider. Your web- and native applications love CouchDB, because it speaks JSON natively and supports binary data for all your data storage needs.

The Couch Replication Protocol lets your data flow seamlessly between server clusters to mobile phones and web browsers, enabling a compelling offline-first user-experience while maintaining high performance and strong reliability. CouchDB comes with a developer-friendly query language, and optionally MapReduce for simple, efficient, and comprehensive data retrieval.

The community would like to thank all contributors for their part in making this release, from the smallest bug report or patch to major contributions in code, design, or marketing, we couldn’t have done it without you!

On behalf of the CouchDB PMC,
Jan Lehnardt
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CouchDB Digest —October 2025

It’s a wrap on the spookiest month of the year! 🎃 The CouchDB community has been getting up to quite a bit. The blog has a brand-new user story from Simon Lucy, we learn how a CouchDB is used in a social media research project and see it compared to popular database options.

Blog Articles

  • Srujan compares seven databases in seven weeks: find out how CouchDB fares alongside other popular options [Srujan on Medium]

Videos

  • Stacey Haysler talks databases and diversity at FOSSY 2025 in Portland: if you want to find ways to contribute to a more inclusive CouchDB community through efforts at your team, company, event or project level, this is a must-watch [Software Freedom Conservancy on YouTube]

Tools

Thanks for keeping up with CouchDB and the community that keeps it going. If we missed anything you think should be here or have a source to check next time, let us know in the comments. See you here again next month!