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DevOps / Gradle8 Interview Questions

What is the difference between Gradle 8 and Gradle 9?

Gradle 9.0 (released mid-2026) is the major line that followed Gradle 8's final releases (culminating around 8.14.x), and it introduces both new conventions and breaking changes on top of what 8 established.

Gradle 8Gradle 9
Configuration cache stabilizing, opt-in via a property.Configuration cache promoted to the preferred, actively recommended mode.
Two-part version numbers per the pre-9 scheme (e.g. 8.14).Adopts three-part Semantic Versioning for all stable features (e.g. 9.0.0).
Minimum/maximum supported JDK ranges tied to the 8.x release.Bumps minimum required Java version further, drops long-deprecated APIs still present in 8.
Isolated Projects remains a pre-alpha, unreleased feature.Continues building toward Isolated Projects, targeted for a later Gradle 9.x or Gradle 10 release.

For a build currently targeting "Gradle 8" specifically, the practical takeaway is that it's the previous major line as of mid-2026, not the newest — useful context if this question comes up in an interview expecting awareness of where the ecosystem actually stands, rather than assuming 8 is still current.

What versioning scheme does Gradle adopt starting with 9.0.0 that differed from the 8.x line?
What does Gradle 9.0 do with the configuration cache compared to Gradle 8?

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