Erster Release Candidate von Spring Boot 3

Details unter,

Mein Spring-Boot-Buch entwickelt sich gut, es gibt keine großen Showstopper. Hibernate 6 ergibt bei einer @ManyToMany Assoziation eine komischer Ausnahme, das was bei Hibernate 5 nicht so war; zum Glück, wenn man von EAGER auf LAZY geht (ist eh Standard), ist das kein Problem mehr.

Kleine Änderungen gegenüber SB 2 betreffen @AutoConfiguration bei eigenen Autokonfigurationen, aber im Allgemeinen ist der Aufwand für eine SB 3-Migration gering, da SB 2.7 verschiedene Sachen vorbereitet hat, etwa spring.factories fällt weg oder der WebSecurityConfigurerAdapter.

Der kann automatisch migrieren.

Meine aktuellen Spring-Kurse basieren auf SB 2, im nächsten Jahr werde ich diese zu einem großen Kurs zusammenfassen, der dann auf SB 3 basiert.

QueryDSL 5.0.0 verfügbar

Aus den Release-Notes:

This release of QueryDSL targets Java 8 minimally and comes with various improvements to make QueryDSL ready for the modern Java ecosystem.
This version also removes joda-time:joda-time, and as required runtime dependencies for using QueryDSL.

QueryDSL 5.0 is the long awaited major release after the QueryDSL project was left mostly unmaintained for over two years.

New features

  • #2672 – Various performance and code improvements possible by targeting Java 8 source level.
  • #2672 – Added Fetchable#stream() which returns a Stream<T>.
    Make sure that the returned stream is always closed to free up resources, for example using try-with-resources.
    It does not suffice to rely on a terminating operation on the stream for this (i.e. forEach, collect).
  • #2324 – Removal of Guava as dependency.
    Almost no required transitive dependencies to get started with QueryDSL.
    And no more conflicts with Guava versions required by your other tools or own application.
  • #2025joda-time:joda-time is no longer a required dependency for querydsl-sql.
    By default, the Java 8 date/time API is used for date/time operations.
    The joda-time:joda-time types will still be registered automatically if they are on the classpath.
  • #2215 – MongoDB 4 support through the Document API
  • #2697 – Allow com.querydsl.core.alias.Alias.* to be used on a JRE by relying on ECJ as compiler
  • #2479 – Swap out JSR305 for Jetbrains Annotations.
    Because the Jetbrains Annotations, contrary to the JSR305 annotations, use a Class retention level, Jetbrains Annotations
    does not have to be available at runtime and is not a transitive dependency.
  • #658 – Added JPAExpressions#treat which can be used to generate JPA 2.1 Treated path expressions.
  • #2666 – More descriptive error message when using unsupported query features in JPA.
  • #2106 – Support NullsLast ordering in querydsl-collections.
  • #2404 – Upgrade of JTS / Geolatte in querydsl-spatial
  • #2320 – Make Spatial support available to HibernateDomainExporter and JPADomainExporter.
  • #2612 – Support jakarta.* packages for new Jakarta EE releases (available through thejakarta classifiers for Maven)
  • #1376 – Return typed expression from nullif and coalesce methods.
  • #1828 – Kotlin Codegen support
  • #2798 – Java Record support

Wie ist denn der Einsatz bei euch von QueryDSL? Eine wichtiger Baustein in eurer Unternehmensanwendung?

Google Guava in Version 29 erschienen

Zu den Details:


  • Guava types can no longer be sent over GWT-RPC. To temporarily reenable support, set the guava.gwt.emergency_reenable_rpc system property to true. (5214a10)
    • This is the only breaking change in this release, and it affects only users of the guava-gwt artifact, not people who use only the guava artifact. This release contains no changes that break binary compatibility for any users.
  • API documentation for Guava classes is now easier to reach. For example, for ImmutableList, visit Also, more easily access the index at
  • collect: Annotated FluentIterable.from(FluentIterable) with @DoNotCall. (b1c77b7)
  • collect: Made ceilingfloorheadSet(E, boolean), and tailSet(E, boolean) methods available in the GWT-emulated ImmutableSortedSet. (7e0fe905f2fbf2)
  • graph: Made it possible to set a stable incident edge order by calling the newly added method [Value]Graph.Builder.incidentEdgeOrder(ElementOrder.stable()). (7016402)
  • graph: Added incidentEdgeOrder() to the [Value]Graph interfaces. (cde576e)
  • util.concurrent: Added Duration-based default methods to ListeningScheduledExecutorService. (931e83f)
  • util.concurrent: Added immediateVoidFuture. (9f3bae5)
  • util.concurrent: Removed @Beta from Service and related classes. (dc46627)
  • util.concurrent: Deprecated the 1-arg overload of ServiceManager.addListener. (86e3620)
  • util.concurrent: Changed the return type of ServiceManager.servicesByState() to ImmutableSetMultimap (but also retained a method with the old signature for binary compatibility). (31999ae)
  • util.concurrent: Made it safe to load the AbstractFuture class from a ForkJoinPool thread under a security manager. (6e0c5b5)

Groovy 3 mit vielen Sprachänderungen

Groovy ist eine Programmiersprache auf der JVM, die bald schon 20 Jahre in der Entwicklung ist. In den letzten Jahren ist es leise um die Sprache geworden und man bekommt den Eindruck, dass Groovy zur Konfigurationssprache für Gradle-Builds degradiert ist.

Nun ist Groovy 3 erschienen mit einem ganz neuen Parser, Parrot. Die Anzahl der Neuerungen ist vielfältig, weil man Groovy nun als echte Erweiterung von Java aufgebaut hat. An vielen kleinen Stellen gab es vorher Fehler, Lambda-Ausdrücke waren anders, Array-Initialisierungen waren mit {} nicht möglich, und vieles mehr.

Zum Nachlesen aller Neuerungen:

Spring Framework 5.2 fertig

Ankündigung im Blog

Spring Framework 5.2 requires JDK 8 or higher and specifically supports JDK 11 as the current long-term support branch as well as JDK 13 as the latest OpenJDK release. It comes with many performance improvements (affecting startup time as well as peak performance) and further steps taken towards GraalVM native image support.

This release deeply integrates with Kotlin 1.3 and provides first-class support for Kotlin coroutines on top of Spring WebFlux. Furthermore, it comes with reactive messaging integration for the RSocket protocol as well as reactive transaction management for R2DBC, MongoDB and Neo4j (with datastore integration provided by Spring Data’s modules).

As of the upcoming Spring Boot 2.2 RC1 release, you’ll be able to consume Spring Framework 5.2 GA through!

Wichtige Links:

Eclipse GlassFish 5.1.0 ist fertig, die erste Jakarta EE Implementierung

Download unter

Eclipse GlassFish is a complete application server that implements the Jakarta EE specification. GlassFish includes implementations of all required and optional Jakarta EE APIs, and passes all Jakarta EE TCKs. GlassFish also includes a complete administration console, clustering support, and other developer and production focused tools and features.

WildFly 15 ist final

Siehe Läuft ordentlich auf Java 11. Zur Wiederholung der Versionen:

JBoss 3.2.x. implementiert Java EE-Spezifikation 1.3(.1) (EJB 2.0)

JBoss 4.x: Java EE 1.4 (EJB 2.1, Servlet 2.4, JSF 2.1, …) und am Ende der Serie schon Teile von Java EE 5.

JBoss 5.x: Java EE 5 (EJB 3, JPA 1.0, Servlet 2.5, JSP 1.2)

JBoss 6.x: Java EE 6 (EJB 3.1, CDI 1.0, JPA 2.0, Servlet 3.0, JSF 2.0, JAX-WS 2.2, JAX-RS 1.1, Bean Validation 1.0)

JBoss 7.x: ebenfalls Java EE 6. Implementierung hat modularen Kernel, neue Verzeichnisstruktur.

Wildfly 8.x  Java EE 7 zertifiziert für Voll- und Web-Profil. Vierteljährliche Updates.

Wildfly 14.x. Java EE 8 zertifiziert

Wildfly 15. Aktuellste Version, läuft gut auf Java 11

Hystrix wird nicht weiterentwickelt bleibt in „maintenance mode“

So schreibt es

Hystrix is no longer in active development, and is currently in maintenance mode.

Hystrix (at version 1.5.18) is stable enough to meet the needs of Netflix for our existing applications. Meanwhile, our focus has shifted towards more adaptive implementations that react to an application’s real time performance rather than pre-configured settings (for example, through adaptive concurrency limits). For the cases where something like Hystrix makes sense, we intend to continue using Hystrix for existing applications, and to leverage open and active projects like resilience4j for new internal projects. We are beginning to recommend others do the same.

Netflix Hystrix is now officially in maintenance mode, with the following expectations to the greater community: Netflix will no longer actively review issues, merge pull-requests, and release new versions of Hystrix. We have made a final release of Hystrix (1.5.18) per issue 1891 so that the latest version in Maven Central is aligned with the last known stable version used internally at Netflix (1.5.11). If members of the community are interested in taking ownership of Hystrix and moving it back into active mode, please reach out to