1.8.0

Micrometer 1.8.0 is the GA version of an LTS feature release. Below are the combined release notes of all the pre-release milestones and release candidate preceding it.

⚠️ Noteworthy

• Known issue: [statsd] JVM crash (SIGSEGV) at startup with alpine based docker image, see #2776 for workaround
• Regression: [statsd] Statsd meter recordings are dropped when submitted from parallel threads #2880 (fixed in 1.8.1)
• Deprecate ReactorNettySender #2814
• Migrate Jersey server instrumentation into micrometer-core #2780
• Move DiskSpaceMetrics to i.m.core.instrument.binder.system #2750

⭐ New Features / Enhancements

• Include the number of active instances in CommonsObjectPool2Metrics #2623
• Dynatrace metrics API v2 support #2295
• Support "collection" tag in "mongodb.driver.commands" metric #1799
• Use Dynatrace v2 export as default unless deviceId is set #2727
• Add connector name tag for JettyConnectionMetrics and JettySslHandshakeMetricsBinder #2603
• Unix Domain Socket support (StatsD) #792
• Migrate Jersey server instrumentation into micrometer-core #2780
• Add jersey-server as transitive dependency, remove jersey-hk2 #2768
• Move DiskSpaceMetrics to i.m.core.instrument.binder.system #2750
• Jersey 3 server support #2748
• Datadog distributions via DogStatsD #1056
• StackdriverMeterRegistry should report Counters as CUMULATIVE not as GAUGE #2773
• Elastic registry: allow api-key for authentication #2712
• More accurate metrics for 404 responses from Jersey #2587
• Build with JDK 17.0.0 #2778

🪲 Bug Fixes

• Rename netty native files so native libraries can be loaded #2611
• Monitored Cache is not eligible for garbage collection #2642
• Can't configure DISTRIBUTION on per-metric basis for Datadog #2798
• PrometheusNamingConvention duplicates "_seconds" suffix with default configuration for Timer metrics #2320
• zgc pause time includes concurrent time #2372
• Prevent race conditions in cache metrics #2839

🔨 Dependency Upgrades

• Upgrade to Reactor 2020.0 #2588
• Upgrade google-cloud-monitoring to 2.x #2249
• Upgrade dynatrace-metric-utils to 1.1.0 #2699
• Upgrade to JUnit 5.8.1 #2816

📝 Tasks

• Update Dynatrace metric library usage #2698
• Rename OneAgentMetadataEnrichment to DynatraceMetadataEnrichment #2692
• Pin jOOQ to 3.14.+ #2685
• Update Spring Boot example config for Dynatrace #2658
• Upgrade Spring Boot to 2.6.0-M3 in samples for 1.8.x #2831
• Native image support investigation #2637
• Remove redundant maven central repository in samples #2610
• Update Dynatrace samples for Spring Boot autoconfiguration #2713
• Use latest.release for Javalin #2711
• License violation in JsonUtils #2762
• Upgrade Gradle to 7.2 #2757
• Add a build job on JDK 11 #2756
• Add a build job on JDK 8 #2480
• Integration test for Elasticsearch backend with API key authentication #2820
• Deprecate ReactorNettySender #2814
• CloudWatchMeterRegistry must use a separate thread pool to publish data to cloud watch #2717
• Use JUnit Jupiter for JerseyTest tests #2852
• Fix WavefrontMeterRegistryTest.configureDefaultSenderWithCustomConfig() #2849
• Ensure Micrometer can be compiled to native image with JDK 17 based GraalVM #2777

❤️ Contributors

We'd like to thank all the contributors who worked on this release!

@izeye @arminru @bono007 @pirgeo @wengertj @OlgaMaciaszek @bentmann @YuliaFrishko @tmarszal @Fetsivalen @bodin @samarprakash @cyberdelia