The Netty project

We are happy to announce the release of #netty 4.2.2.Final. This is our second release for the 4.2 release train, including bug-fixes, performance enhancement and new features. For all the details please read our release announcement: netty.io/news/2025/06/0…

I am happy to announce the release of #netty 4.1.122.Final. Beside bug-fixing we also decided we will re-enable the usage of Unsafe by default while using Java24+, because the performance penalty is just too high without it for now. Check: netty.io/news/2025/06/0…

Unix Domain Socket support for #iouring just landed in #netty 4.2. Thanks to @dreamli60679407 for this amazing contribution! <3 OSS github.com/netty/netty/pu…

We are happy to announce the release of #netty 4.1.121.Final. We did a quick followup release as something went wrong during our release of 4.1.120.Final yesterday and so required a different GLIBC version as expected. See: netty.io/news/2025/04/2…

We are happy to announce the release of #netty 4.1.120.Final. This is a bug-fix release. For all the details read our release announcement: netty.io/news/2025/04/2…

I am excited to finally announce the release of #netty 4.2.0.Final which is in the making for quite some time! This release comes with a lot of new exciting features, including the highly anticipated #io_uring support. See netty.io/news/2025/04/0…

Norman continuing to kill it on the io_uring networking side. This is the way, Nettty will be something to point to as a reference implementation of how it should be done.

We just released the next release candidate for #netty 4.2.0 (RC4). Please try it out and provide feedback: netty.io/news/2025/03/0…

We just merged #iouring buffer ring support into the upcoming #netty 4.2.0 ... I am super excited by the new #iouring based transport. Thanks a lot to @dreamli60679407 for this amazing contribution! See github.com/netty/netty/pu…

Just migrate our messaging system (mission critical) from a modified #Jetty 9.2 to #Netty 4.1.115 , YGC ↓ 50%， and CPU drop 1-5pt, code removed ~13k LOC, it works very well on AJDK 21.

Hi all, We are happy to announce the release of #netty 4.1.116.Final. This is a bug-fix release, please check our release announcement for all the details: netty.io/news/2024/12/1…

We just released our first release-candidate for the upcoming #netty 4.2.0! If you didnt test it yet please do so as we plan to follow with the final release soon and would love to fix any issues before doing so. For all the changes check our announcement netty.io/news/2024/12/1…

I am proud to share that #netty was selected by @SpotifyEng to receive their #OSS fund this year. This wouldn't have been possible without all the help of our community. Thanks a lot to everyone and of course @SpotifyEng itself: engineering.atspotify.com/2024/11/congra…

Hi all, We released #netty 4.1.115.Final which includes various bugfixes but also include a fix for (CVE-2024-47535) which we rate as very low as the attacker needs to have access to the local filesystem with the right permissions. netty.io/news/2024/11/1…

We released #netty 4.2.0.Beta1, which means the final release is very close. Please give it a spin as a replacement for 4.1.x and report any issues you might find: For all details see netty.io/news/2024/11/0…

We just released #netty 4.2.0.Alpha5 which will be our last alpha release of 4.2.0. This release fixes various bugs + changes the default ByteBufAllocator to AdaptiveByteBufAllocator. This should help to reduce the overall memory usage. See netty.io/news/2024/10/0…

We released #netty 4.1.114.Final which contains various bugfixes but also allows to configure different strategies for dns resolution to workaround issues while deployed in Kubernetes. Beside this it also contains fixes in our new allocator: netty.io/news/2024/10/0…

We are happy to announce the release of the fourth alpha for the upcoming #netty version 4.2.0. We encourage users of netty 4.1.x to try out this alpha release and provide feedback if any breakage is noticed. netty.io/news/2024/09/0…

We just release #netty 4.1.113.Final. This is a bug-fix release so please consider upgrading. For all the details read our release announcement: netty.io/news/2024/09/0…

Hi all, We released #netty 4.2.0.Alpha3. Everyone using 4.1.x should be able to upgrade without any code changes. We would love to hear from people if they encounter any problems during the upgrade so we can fix it before the final version is released netty.io/news/2024/08/2…