Lemmy v0.9.0 Release (2021-01-25)

Changes

Since our last release in October of last year, and we’ve had ~450 commits.

The biggest changes, as we’ll outline below, are a re-work of Lemmy’s database structure, a v2 of Lemmy’s API, and activitypub compliance fixes. The new re-worked DB is much faster, easier to maintain, and now supports hierarchical rather than flat objects in the new API.

We’ve also seen the first release of Lemmur, an android / iOS (soon) / windows / linux client, as well as Lemmer, a native iOS client. Much thanks to @krawieck, @shilangyu, and @uuttff8 for making these great clients. If you can, please contribute to their patreon to help fund lemmur development.

LemmyNet projects

Lemmy Server

• Moved views from SQL to Diesel. This was a spinal replacement for much of lemmy.
  • Removed all the old fast_tables and triggers, and created new aggregates tables.
• Added a v2 of the API to support the hierarchical objects created from the above changes.
• Moved continuous integration to drone, now includes formatting, clippy, and cargo build checks, unit testing, and federation testing. Drone also deploys both amd64 and arm64 images to dockerhub.
• Split out documentation into git submodule.
• Shortened slur filter to avoid false positives.
• Added query performance testing and comparisons. Added indexes to make sure every query is < 30 ms.
• Added compilation time testing.

Federation

This release includes some bug fixes for federation, and some changes to get us closer to compliance with the ActivityPub standard.

• Community bans now federating.
• Local posts sometimes got marked as remote.
• Creator of post/comment was not notified about new child comments.
• Community deletion now federated.

None of these are breaking changes, so federation between 0.9.0 and 0.8.11 will work without problems.

Lemmy javascript / typescript client

• Updated the lemmy-js-client to use the new v2 API. Our API docs now reference this project’s files, to show what the http / websocket forms and responses should look like.
• Drone now handles publishing its npm packages.

Lemmy-UI

• Updated it to use the v2 API via lemmy-js-client, required changing nearly every component.
• Added a live comment count.
• Added drone deploying, and builds for ARM.
• Fixed community link wrapping.
• Community Titles are now used instead of names.
• Various other bug fixes.

Lemmy Docs

• We moved documentation into a separate git repository, and support translation for the docs now!
• Moved our code of conduct into the documentation.

Upgrading

If you’d like to make a DB backup before upgrading, follow this guide.

• Upgrade with manual Docker installation
• Upgrade with Ansible installation

Known issues

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