An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

cloud-native java metrics microservices monitoring observability
44 Open Issues Need Help Last updated: Jul 31, 2026

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An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
enhancement help wanted module: micrometer-observation kotlin

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
Cache baseline JARs on CI about 1 month ago
help wanted type: task build

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
help wanted type: task

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
help wanted doc-update

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
enhancement help wanted module: micrometer-binders

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
help wanted doc-update registry: prometheus

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
enhancement help wanted module: micrometer-core instrumentation

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
enhancement help wanted release notes registry: datadog

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
help wanted type: task module: micrometer-core nullability

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
enhancement help wanted module: micrometer-observation

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
enhancement help wanted spring-boot change

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
enhancement help wanted module: micrometer-core instrumentation

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
enhancement help wanted module: micrometer-core instrumentation

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
help wanted type: task registry: otlp

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
help wanted doc-update

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
help wanted doc-update

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
enhancement help wanted module: micrometer-observation-test

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
enhancement help wanted instrumentation

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
enhancement help wanted registry: stackdriver

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
help wanted type: task polish nullability

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
help wanted doc-update

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
help wanted type: task

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
help wanted type: task

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
help wanted registry: statsd

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability

AI Summary: The `ExecutorServiceMetrics` in Micrometer repeatedly logs exceptions when monitoring `java.util.concurrent.ThreadPerTaskExecutor`. This occurs because a `MethodHandle` used for internal reflection becomes null when the `--add-opens` JVM argument is missing, but the code proceeds to use it anyway, leading to constant crashes and log spam.

Complexity: 2/5
bug help wanted module: micrometer-core instrumentation

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
enhancement help wanted registry: otlp

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
help wanted doc-update module: micrometer-core

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability

AI Summary: A test named `MongoMetricsCommandListenerTest.shouldCreateFailedCommandMetricWithCustomSettings()` is intermittently failing on CI. The failure occurs because the test expects a specific `cluster.id` tag value for a MongoDB driver command metric, but a different, dynamically generated `cluster.id` is found, leading to a `MeterNotFoundException`.

Complexity: 3/5
help wanted type: task

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
help wanted performance module: micrometer-binders

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
enhancement help wanted module: micrometer-core instrumentation

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
enhancement help wanted module: micrometer-core instrumentation

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
enhancement help wanted module: micrometer-observation

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
enhancement help wanted module: micrometer-observation

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability
bug help wanted module: micrometer-core instrumentation

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability

AI Summary: This issue requests adding a new Netty metric named `eventexecutor.workers` to represent the total count of Netty's event loops. The rationale is to provide a useful debugging metric, similar to one implemented in Armeria, and a reference implementation link is provided.

Complexity: 2/5
enhancement help wanted module: micrometer-core

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability

AI Summary: Annotate all Micrometer packages with `@NullMarked` to ensure consistent nullability specification across the API. This involves identifying and annotating any currently unmarked packages, while maintaining exceptions where necessary.

Complexity: 3/5
help wanted type: task nullability

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability

AI Summary: The task is to fix a bug in the Micrometer library's `LongTaskTimer` class. The `measure` method currently doesn't return the maximum duration of long tasks, as documented. The fix involves adding a new `Measurement` to include the maximum duration statistic.

Complexity: 3/5
bug help wanted module: micrometer-core

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Java
#cloud-native#java#metrics#microservices#monitoring#observability