1.14.0

Micrometer 1.14.0 is the GA version of a new feature release. See our support policy for support timelines.

Below are the combined release notes of all the pre-release milestones and release candidate preceding this GA release.

⚠️ Noteworthy

• Support ExponentialHistogram in OTLP #3861
• Virtual thread metrics #3956
• Validate expected Observation API call ordering on TestObservationRegistry #5239

⭐ New Features / Enhancements

• Expose TestObservationRegistry as an AssertJ AssertProvider #5551
• Use failure with actual and expected message to improve IDE experience for ObservationContextAssert #5550
• Replace @Nonnull(when = When.MAYBE) with @CheckForNull in @Nullable #5485
• Warn about Prometheus meter registration failure #5228
• Improve performance of merging two Tags/KeyValues instances #5140
• Allow user-provided custom scheduler for periodically binding KafkaMetrics #4976
• Allow specifying the meterNameConsumer for HighCardinalityTagsDetector #4028
• Virtual thread metrics #3956
• Allow tagsBasedOnJoinPoint to override extraTags with CountedAspect #2461
• Configurable _source.enabled Elastic mapping property #1629
• Skip registering Caffeine meters when statistics are not enabled #5409
• Log a warning when instrumenting a cache that is not recording stats in CaffeineCacheMetrics #5402
• MultiGauge.register should accept more types #5390
• Metrics not collected after ExecutorService recreation #5366
• Add "cancelled" information to the GrpcServerObservationContext #5301
• process_start_time_seconds HELP description inconsistency between Prometheus and micrometer #5290
• Add history-tracking to ObservationValidator #5370
• [dynatrace/v2] reduce log verbosity #5306
• Validate expected Observation API call ordering on TestObservationRegistry #5239
• Add JvmThreadDeadlockMetrics #5222
• Allow multiple MeterTag annotations for multiple tags from same target #4081
• Support ExponentialHistogram in OTLP #3861
• Expose ForkJoinPool parallelism and pool size metrics #5236
• Allow custom ThreadFactory for OtlpMeterRegistry #5153
• Do not register GC metrics when GC notifications are unavailable #5149
• Cancelled status code not reported in the gRPC server metrics #5109
• Add counter of failed attempts to retrieve a connection from the pool #5057
• Add Support for @MeterTag to @Counted #4725
• Compile-time weaving support for aspects #1149
• Service level objectives support on @Timed annotation #5145

📔 Documentation

• Add docs for ObservationValidator #5387
• Add docs for multiple MeterTag annotations #5641
• Add docs for @MeterTag for @Counted #5640
• Add docs for JvmThreadDeadlockMetrics #5614
• Add docs for ForkJoinPool parallelism and pool size metrics #5611
• Add docs for VirtualThreadMetrics #5610

🔨 Dependency Upgrades

• Bump io.prometheus:prometheus-metrics-bom to 1.3.3 #5649
• Bump software.amazon.awssdk:cloudwatch to 2.29.7 #5645
• Bump com.google.cloud:libraries-bom to 26.50.0 #5638
• Bump com.signalfx.public:signalfx-java to 1.0.47 #5635
• Bump com.google.auth:google-auth-library-oauth2-http to 1.29.0 #5634
• Bump software.amazon.awssdk:cloudwatch to 2.29.6 #5631
• Bump com.netflix.spectator:spectator-reg-atlas to 1.8.1 #5630
• Bump com.google.cloud:google-cloud-monitoring to 3.54.0 #5628
• Bump dropwizard-metrics to 4.2.28 #5569
• Bump io.opentelemetry.proto:opentelemetry-proto to 1.3.2-alpha #5268
• Bump org.hdrhistogram:HdrHistogram to 2.2.2 #5171

❤️ Contributors

Thank you to all the contributors who worked on this release:

@codesimplicity, @genuss, @izeye, @mihalyr, @lcavadas, @filiphr, @sean-heller, @vasiliy-sarzhynskyi, @ArtyomGabeev, @kinddevil, @mstyura, @madhead, @pirgeo, @rkurniawati, @lenin-jaganathan, @smaxx