Spring Boot 3.5.0 M1 Release Notes

Spring Boot 3.5.0-M1 Release Notes

Upgrading from Spring Boot 3.4

spring-boot-parent

The spring-boot-parent module is no longer published. It provides dependency management for internal dependencies used, for example, in Spring Boot’s own tests. If you were using spring-boot-parent, replace it with dependency management of your own that meets your application’s needs.

Using .enabled and Other Boolean Configuration Properties

Supported values for .enabled properties have been tightened with this release and are now more consistent. Values must now be either true or false.

Previous versions of Spring Boot would sometimes use conditions that considered any value other than false as enabled.

Validation of profile naming

Rules for profile naming have been tightened with this release and are now more consistent. Profiles can now only contain - (dash), _ (underscore), letters and digits. Additionally, Profiles are not allowed to start or end with - or _.

Redis

When spring.data.redis.url is configured, the Redis database that is used is determined by the URL. If the URL does not specify a database, the default of 0 is used. The spring.data.redis.database property is now ignored when spring.data.redis.url is configured, aligning its behavior with the host, port, username, and password properties.

Minimum Requirements Changes

None.

New and Noteworthy

Tip	Check the configuration changelog for a complete overview of the changes in configuration.

Task decoration for scheduled tasks

If a TaskDecorator bean is present, it is applied to the auto-configured taskScheduler bean. It is also applied to the auto-configured ThreadPoolTaskSchedulerBuilder and SimpleAsyncTaskSchedulerBuilder beans. It will be used by any schedulers created using those builders.

Vibur Connection Pool

Support for configuring a Vibur DBCP connection pool using DataSourceBuilder has been added. Dependency management has also been updated to cover org.vibur:vibur-dbcp.

Redis

Add support for configuring ReadFrom using the spring.data.redis.lettuce.read-from property.

SSL bundle metrics

Spring Boot Actuator now publishes metrics for SSL bundles. The metric ssl.chains counts the number of chains and their status (valid, expired, soon-to-be-expired, not-yet-valid). The metric ssl.chain.expiry tracks the number of seconds until expiry for each certificate chain.

Liquibase

The managed version of Liquibase is now 4.31.0. Two new Liquibase properties have been added:

• spring.liquibase.analytics-enabled – Whether to send product usage data and analytics to Liquibase

• spring.liquibase.license-key – Liquibase Pro license key

Use of the properties requires Liquibase 4.31.0 or later.

Dependency Upgrades

Spring Boot 3.5.0-M1 moves to new versions of several Spring projects:

• Spring Integration 6.5.0-M1

• Spring LDAP 3.3.0-M1

• Spring Security 6.5.0-M1

Numerous third-party dependencies have also been updated, some of the more noteworthy of which are the following:

• Artemis 2.39

• AssertJ 3.27

• Byte Buddy 1.16

• Caffeine 3.2

• Commons DBCP 2.13

• Flyway 11.2

• Hikari CP 6.2

• HtmlUnit 4.8

• Jaybird 6.0

• Kafka 3.9

• Liquibase 4.31

• Micrometer 1.15.0-M1

• Micrometer Tracing 1.5.0-M1

• Mockito 5.15

• MySQL 9.2

• OpenTelemetry 1.46

• Quartz 2.5

• Rabbit AMQP Client 5.24

• Rabbit Stream Client 0.21

• Selenium 4.28

• Selenium HtmlUnit 4.27

Miscellaneous

Apart from the changes listed above, there have also been lots of minor tweaks and improvements including:

• The application_name property of the Postgres docker container is now configured by default using spring.application.name.

• The auto-configuration for Jackson retains modules that have been added prior to its execution, rather than overwriting them.

• Tomcat connector’s max parameter count can be configured using the server.tomcat.max-parameter-count property.

• Actuator’s process info contributor now contains virtual thread information when running on JDK 24 or later.

• The ECS structured logging format now adds Logback and Log4j’s markers in the tags field.

• Spring Boot now installs a Logback OnErrorConsoleStatusListener to print error messages during Logback initialization to the console.

• The 'error' entry returned from ErrorAttributes now wraps all MessageSourceResolvable instances to ensure safe JSON serialization.

• Zipkin auto-configuration now uses ZipkinHttpClientSender by default, if the HttpClient class is unavailable URLConnectionSender is used.

• A new @ConditionalOnBooleanProperty annotation has been introduced.

• Empty passwords are now supported when using Bitnami’s PostgreSQL image with Docker Compose. Set ALLOW_EMPTY_PASSWORD in the container’s environment to enable the support.

• The new property management.server.accesslog.prefix can now be used to customize the access log prefix for the management server.

• The AWS Advanced JDBC Wrapper is now auto-detected from jdbc:aws-wrapper:… URLs, removing the need to configure spring.datasource.driver-class-name.

• ConstraintViolations can be adapted to a MethodValidationResult by setting the new spring.validation.method.adapt-constraint-violations property to true

Deprecations in Spring Boot 3.5.0-M1

• ConditionalOutcome.inverse(…​) has been deprecated for removal since it doesn’t generate a useful message