Logging is a long established part of troubleshooting applications and one of the three pillars of observability, next to metrics and traces. No one likes flying blind in production, and when incidents happen, developers are happy to have log files. Logs are often written out in a human-readable format.

Structured logging is a technique where the log output is written in a well-defined, often machine-readable format. This format can be fed into log management systems and enables powerful search and analytics capabilities. One of the most commonly used formats for structured logging is JSON.

With Spring Boot 3.4, structured logging is supported out of the box. It supports the Elastic Common Schema (ECS) and Logstash…

On behalf of the team and everyone who has contributed, I'm happy to announce that Spring Boot 3.3.1 has been released and is now available from Maven Central.

This release includes 68 bug fixes, documentation improvements, and dependency upgrades. Thanks to all those who have contributed with issue reports and pull requests.

How can you help?

If you're interested in helping out, check out the "ideal for contribution" tag in the issue repository. If you have general questions, please ask on stackoverflow.com using the spring-boot tag or chat with the community on Gitter.

Project Page | GitHub | Issues | Documentation | Stack Overflow | …

On behalf of the team and everyone who has contributed, I'm happy to announce that Spring Boot 3.2.7 has been released and is now available from Maven Central.

This release includes 51 bug fixes, documentation improvements, and dependency upgrades. Thanks to all those who have contributed with issue reports and pull requests.

How can you help?

If you're interested in helping out, check out the "ideal for contribution" tag in the issue repository. If you have general questions, please ask on stackoverflow.com using the spring-boot tag or chat with the community on Gitter.

Project Page | GitHub | Issues | Documentation | Stack Overflow | …

Spring Boot 3.3.0 has been released, and it contains support for SBOMs. SBOM stands for "Software Bill of Materials" and describes the components used to build a software artifact. In the context of this blog post, that's your Spring Boot application. These SBOMs are useful because they describe exactly what your application contains. With that information, you can assess if a security vulnerability affects your application, or use automated security tools to scan your applications and alert you on security vulnerabilities.

There are multiple SBOM formats out there, the most widely used ones are CycloneDX, SPDX, and Syft. Spring Boot 3.3.0 supports CycloneDX out of the box. The…

On behalf of the Spring Boot team and everyone that has contributed, I am pleased to announce that Spring Boot 3.3.0 has been released and is available from Maven Central.

This release adds a significant number of new features and improvements. For full upgrade instructions and new and noteworthy features please see the release notes.

What's new in 3.3

The highlights of the 3.3 release include:

• CDS Support for improved startup times and reduced memory consumption
• Observability improvements, for example support for Micrometer's @SpanTag, a process InfoContributor and Prometheus 1.x support
• Spring Security improvements, for example an auto-configuration for JwtAuthenticationConverter
• Service connection support for Apache ActiveMQ Artemis and LDAP
• Docker Compose support for Bitnami Container Images
• Virtual thread support for websockets
• Support for Base64 resources in property (and YAML) files
• Support for SBOMs with the new SBOM actuator endpoint
• A completely revamped documentation…

On behalf of the team and everyone who has contributed, I'm happy to announce that Spring Boot 3.2.6 has been released and is now available from Maven Central.

This release includes 75 bug fixes, documentation improvements, and dependency upgrades. Thanks to all those who have contributed with issue reports and pull requests.

How can you help?

If you're interested in helping out, check out the "ideal for contribution" tag in the issue repository. If you have general questions, please ask on stackoverflow.com using the spring-boot tag or chat with the community on Gitter.

Project Page | GitHub | Issues | Documentation | Stack Overflow | …

On behalf of the team and everyone who has contributed, I'm happy to announce that Spring Boot 3.1.12 has been released and is now available from Maven Central.

This release includes 49 bug fixes, documentation improvements, and dependency upgrades. Thanks to all those who have contributed with issue reports and pull requests.

End of open source support for Spring Boot 3.1.x

Spring Boot 3.1.12 marks the end of open source support for Spring Boot 3.1.x. Please upgrade to Spring Boot 3.2.x as soon as possible. If you are not yet ready to upgrade, commercial support for Spring Boot 3.1.x is available…

On behalf of the team and everyone who has contributed, I'm happy to announce that Spring Boot 3.1.9 has been released and is now available from Maven Central.

This release includes 46 bug fixes, documentation improvements, and dependency upgrades. Thanks to all those who have contributed with issue reports and pull requests.

How can you help?

If you're interested in helping out, check out the "ideal for contribution" tag in the issue repository. If you have general questions, please ask on stackoverflow.com using the spring-boot tag or chat with the community on Gitter.

Project Page | GitHub | Issues | Documentation | Stack Overflow | …

On behalf of the team and everyone who has contributed, I'm happy to announce that Spring Boot 3.1.8 has been released and is now available from Maven Central.

This release includes 29 bug fixes, documentation improvements, and dependency upgrades. Thanks to all those who have contributed with issue reports and pull requests.

How can you help?

If you're interested in helping out, check out the "ideal for contribution" tag in the issue repository. If you have general questions, please ask on stackoverflow.com using the spring-boot tag or chat with the community on Gitter.

Project Page | GitHub | Issues | Documentation | Stack Overflow | …

On behalf of the Spring Boot team and everyone that has contributed, I am pleased to announce that Spring Boot 3.2.0 has been released and is available from Maven Central.

This release adds a significant number of new features and improvements. For full upgrade instructions and new and noteworthy features please see the release notes.

What's new in 3.2

The highlights of the 3.2 release include:

• Support for Virtual Threads
• Initial support for JVM Checkpoint Restore (Project CRaC)
• SSL Bundle Reloading
• A lot of Observability Improvements
• Support for RestClient
• Support for JdbcClient
• Support for Jetty 12
• Support for Spring for Apache Pulsar
• SSL bundle support for Kafka and RabbitMQ
• Reworked Nested Jar handling
• Docker Image Building improvements
…