Releases on Java Operator SDK

Version 5.3 Released!

Fri, 13 Mar 2026 00:00:00 +0000

We’re pleased to announce the release of Java Operator SDK v5.3.0! This minor version brings two headline features — read-cache-after-write consistency and a new metrics implementation — along with a configuration adapter system, MDC improvements, and a number of smaller improvements and cleanups.

Key Features

Read-cache-after-write Consistency and Event Filtering

This is the headline feature of 5.3. Informer caches are inherently eventually consistent: after your reconciler updates a resource, there is a window of time before the change is visible in the cache. This can cause subtle bugs, particularly when storing allocated values in the status sub-resource and reading them back in the next reconciliation.

Version 5.2 Released!

Tue, 25 Nov 2025 00:00:00 +0000

We’re pleased to announce the release of Java Operator SDK v5.2! This minor version brings several powerful new features and improvements that enhance the framework’s capabilities for building Kubernetes operators. This release focuses on flexibility, external resource management, and advanced reconciliation patterns.

Key Features

ResourceIDMapper for External Resources

One of the most significant improvements in 5.2 is the introduction of a unified approach to working with custom ID types across the framework through ResourceIDMapper and ResourceIDProvider.

Version 5 Released!

Mon, 06 Jan 2025 00:00:00 +0000

We are excited to announce that Java Operator SDK v5 has been released. This significant effort contains various features and enhancements accumulated since the last major release and required changes in our APIs. Within this post, we will go through all the main changes and help you upgrade to this new version, and provide a rationale behind the changes if necessary.

We will omit descriptions of changes that should only require simple code updates; please do contact us if you encounter issues anyway.

Version 5 Released! (beta1)

Fri, 06 Dec 2024 00:00:00 +0000

See release notes here.