Fault Tolerance 7.0.0

Today, we announce the release of SmallRye Fault Tolerance 7.0.0. This is a major release that bumps the minimum Java version, removes several deprecated features, fixes multiple bugs and updates significant dependencies.

The new minimum Java version is 17. This is long overdue, there’s probably no user out there still on Java 8 or 11.

The following deprecated features were removed:

  • support for @Blocking and @NonBlocking

    • use @Asynchronous and @AsynchronousNonBlocking instead

  • the old programmatic API: FaultTolerance, @ApplyFaultTolerance

    • use the new programmatic API: Guard, TypedGuard, @ApplyGuard

  • support for MicroProfile Metrics

    • use Micrometer or OpenTelemetry Metrics

  • the integration of OpenTracing with MicroProfile Context Propegation

    • use OpenTelemetry Tracing

  • support for Security Manager

The dependencies on the following libraries were updated:

  • Jakarta EE: we now use Jakarta EE 11

  • Vert.x: we now use Vert.x 5

  • Micrometer: we were stuck on Micrometer 1.12 due to a breaking change in the Prometheus client, but we’re on the latest release now

  • many others (Mutiny 3, JUnit Jupiter 6, etc.)

The fixed issues are:

  • fault tolerance annotations (@Fallback etc.) present on a stereotype that is present on the guarded class are now correctly applied

    • thanks Teles Nascimento for the issue report and the fix!

  • memory leak in metrics when @ApplyGuard is used

    • thanks Zaiqi Yang for the issue report and the fix!

  • multiple concurrency issues (AI assisted)

As usual, if you have any ideas for improvements, please file an issue!

SmallRye is open source under Apache Software License 2.0.

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