Quarkus is enabling reflection-free Jackson serializers and deserializers by default in the upcoming 3.35 release. Originally an opt-in experimental feature, this build-time metaprogramming approach generates serializers that bypass Java reflection, improving JSON serialization performance. After months of community testing, bug fixes, and compatibility improvements, the full Quarkus test suite now passes with the feature enabled. Users are encouraged to test their applications ahead of the release and report any issues.
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