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Spring Boot 2.3.0 M3 Release Notes
Tip
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Check the configuration changelog for a complete overview of the changes in configuration. |
Graceful shutdown is supported with all four embedded web servers (Jetty, Reactor Netty, Tomcat, and Undertow) and with both reactive and Servlet-based web applications.
When a grace period is configured using server.shutdown.grace-period
, upon shutdown, the web server will no longer permit new requests and will wait for up to the grace period for active requests to complete.
When r2dbc is on the classpath, a ConnectionFactory
is auto-configured with a similar arrangement than a jdbc DataSource
.
If Spring Data is on the classpath, repositories are auto-configured as well, as usual.
R2DBC support also adds an health indicator for the connection factory, metrics for ConnectionPool
and a test slice, @DataR2dbcTest
.
The layers that are created when repackaging a layered jar is configurable with the Maven Plugin and we expect similar support for Gradle in the next milestone. For more details, see the updated reference documentation.
In the absence of a validation query, the datasource HealthIndicator
now operates in query-less mode, using java.sql.Connection#isValid
to validate the connection.
Spring Boot now provides auto-configuration for Spring Integration’s RSocket support.
If spring-integration-rsocket
is available, developers can configure an RSocket server using "spring.rsocket.server.*"
properties and let it use IntegrationRSocketEndpoint
or RSocketOutboundGateway
components to handle incoming RSocket messages.
The support for the Actuator-specific ObjectMapper
that was introduced in M2 has been reverted as it introduced a regression. The feature is now being tracked by this issue.
Spring Boot 2.3 M3 upgrades to the latest milestone of several Spring projects:
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Spring Data Neumann-M4
-
Spring Integration 5.3.0.M3
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Spring Security 5.3.0.RELEASE
Numerous third-party dependencies have been upgraded, some of the more noteworthy of which are the following:
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Elasticsearch 7.6.1
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Flyway 6.3
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Kotlin 1.3.70
Apart from the changes listed above, there have also been lots of minor tweaks and improvements including:
-
Jetty’s backing queue can be configured using
server.jetty.max-queue-capacity
. -
Liquibase’s tag support can be configured using
spring.liquibase.tag
. Clearing all checksums in the current changelog is now available via thespring.liquibase.clear-checksums
property. -
The build plugins offer an option to not include the layers tools jar in a layered archive.
-
Gradle metadata is now published.
-
The Java version used to build is used to set the Java version the buildpack should use.
-
DataSourceBuilder
can be used to configure aSimpleDriverDataSource
. -
DataSource
metrics have now a description.