Welcome to the QQQ Development Archive
QQQ uses Java metadata and backend steps to build data applications. Start with Java 21, Maven, and the source-based sample. The earlier Gradle quickstart and fixed-time setup promise have been replaced with reproducible instructions.
Editorial update: September 10, 2026
This archived entry has been corrected for the 4.0 release review. Its original archive date is retained; it is not evidence of a feature release on that date.
Welcome to the QQQ Development Archive
QQQ uses Java metadata and backend steps to build data applications. Start with Java 21, Maven, and the source-based sample. The earlier Gradle quickstart and fixed-time setup promise have been replaced with reproducible instructions.
Release status
When this correction was made (September 10, 2026) the published candidate was 4.0.0-RC.2. QQQ 4.0.0 has since been released (tag v4.0.0, September 24, 2026). Review the migration guide before changing an existing application.
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