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Lemmy Release v0.19.9

Lemmy v0.19.9 Release

What is Lemmy?

Lemmy is a self-hosted social link aggregation and discussion platform. It is completely free and open, and not controlled by any company. This means that there is no advertising, tracking, or secret algorithms. Content is organized into communities, so it is easy to subscribe to topics that you are interested in, and ignore others. Voting is used to bring the most interesting items to the top.

Changes

This version fixes a potential security problem, by preventing Lemmy from accessing localhost URLs. There is also a fix for a crash during markdown parsing. Lemmy now uses mimalloc instead of the system allocator (usually glibc), which should improve performance and prevent unlimited memory growth over time.

Lemmy

Lemmy-UI

Upgrade instructions

There are no breaking changes with this release.

Follow the upgrade instructions for ansible or docker.

If you need help with the upgrade, you can ask in our support forum or on the Matrix Chat.

Thanks to everyone

We'd like to thank our many contributors and users of Lemmy for coding, translating, testing, and helping find and fix bugs. We're glad many people find it useful and enjoyable enough to contribute.

Support development

We (@dessalines and @nutomic) have been working full-time on Lemmy for over five years. This is largely thanks to support from NLnet foundation, as well as donations from individual users.

If you like using Lemmy, and want to make sure that we will always be available to work full time building it, consider donating to support its development. A recurring donation is the best way to ensure that open-source software like Lemmy can stay independent and alive, and helps us grow our little developer co-op to support more full-time developers.

21 comments

  • Amazing that we are already up to 0.19.9 and on the verge of version 1.0.

    The project has come a long way since 0.17.4, when I first joined. Sometimes it felt like it was taking a long time but looking back it seems like it went so fast. Thank you so much to all contributors, especially Dessalines and Nutomic.

    There is still much more to be done, but I also think it's good to reflect on how far we have come.

    Very nice to see the fix for the spoiler bottom margin, I have been inserting line breaks after spoilers to alleviate that issue for quite some time.

    • Very nice to see the fix for the spoiler bottom margin, I have been inserting line breaks after spoilers to alleviate that issue for quite some time.

      I've used

      (it's just a bunch of hyphens that gets rendered as a line) and that works well

      • Yes that's what I meant by inserting a line break. Btw you only need three hyphens.

        I've become pretty adept with lemmy markdown, it's extremely useful for formatting

  • Has there been any benchmarking of Lemmy using mimalloc vs default (or jemalloc)?

    • No we dont have any benchmarking infrastructure. Maybe one of the instance admins will report some results later.

  • Good job, though for me on a raspbian Debian bookworm with 

     
        
%raver@viruspi  ~  uname -a
Linux viruspi 6.6.74+rpt-rpi-2712 #1 SMP PREEMPT Debian 1:6.6.74-1+rpt1 (2025-01-27) aarch64 GNU/Linux

    Running on raspberry pi 5 the lemmy 0.19.9 container fails with exit code 139 and won't start

     
        
root@viruspi  /etc/lemmy  docker compose up        [+] Running 6/6
 ✔ Container lemmy-postfix-1   Running              0.0s  ✔ Container lemmy-pictrs-1    Running              0.0s  ✔ Container lemmy-postgres-1  Running              0.0s  ✔ Container lemmy-lemmy-1     Created              0.0s  ✔ Container lemmy-lemmy-ui-1  Running              0.0s  ✔ Container lemmy-proxy-1     Running              0.0s Attaching to lemmy-1, lemmy-ui-1, pictrs-1, postfix-1, postgres-1, proxy-1
lemmy-1 exited with code 0
lemmy-1 exited with code 139                             lemmy-1 exited with code 139
lemmy-1 exited with code 139                             lemmy-1 exited with code 139
lemmy-1 exited with code 139                             lemmy-1 exited with code 139
Gracefully stopping... (press Ctrl+C again to force)
[+] Stopping 6/6
 ✔ Container lemmy-postfix-1   Stopped              0.4s  ✔ Container lemmy-proxy-1     Stopped              0.4s  ✔ Container lemmy-lemmy-ui-1  Stopped              0.2s  ✔ Container lemmy-lemmy-1     Stopped              0.0s  ✔ Container lemmy-postgres-1  Stopped              0.3s  ✔ Container lemmy-pictrs-1    Stopped              0.5s  ⚡ root@viruspi  /etc/lemmy 
21 comments