Hello all, I am thrilled to announce the simultaneous release of logback versions 1.3.2 and 1.4.3. Both versions require slf4j-api version 2.0.x or later. These releases bring improved MDC performance. For other details, please refer to the the news page: http://logback.qos.ch/news.html Why two simultaneous releases? Given that downstream users are likely to depend on either Java EE (in the javax namespace) or on Jakarta EE (in the jakarta namespace) in their projects, it was deemed important for logback to support both EE alternatives. As such, logback 1.3.x supports Java EE whereas logback 1.4.x supports Jakarta EE, otherwise the two versions are feature identical. Both 1.3.x and 1.4.x series require the fluent-API introduced in SLF4J 2.0.x. The 1.3.x series requires Java 8 at runtime. If you wish to build logback from source, you will need Java 9. Reproducible builds require Java 18. The 1.4.x series requires Java 11 at build time and at runtime. ------------------ Joran, logback's configuration system, has been rewritten to use an internal representation model which can be processed separately. Given the breadth of the changes, support for SiftingAppender was dropped temporarily and reintroduced in logback version 1.3.0-alpha16. Support for Groovy configuration was dropped for security reasons but was recovered by Tucker Pelletier (virtualdogbert). See: https://github.com/virtualdogbert/logback-groovy-config For benchmarking figures please see: http://logback.qos.ch/performance.html Recent logback releases are reproducible. This means that anyone checking out the code corresponding to the release version from github and building that local copy, will get obtain an identical binary to the binary found on Maven central. Note that due to issue MJAR-275 with the module-info.java produced in earlier java versions, reproducible builds require Java 19. Donations and sponsorship You can also support SLF4J/logback/reload4j projects via donations and sponsorship. We thank our current supporters and sponsors for their continued contributions and in particular Spotify R&D and Exoscale. Sponsorship link: https://github.com/sponsors/qos-ch Announcement mailing list: You can receive SLF4J/logback/reload4j related announcements by subscribing QOS.ch announce list, please visit the following URL. http://www.qos.ch/mailman/listinfo/announce Enjoy, -- Ceki Gülcü