Beyond API Compatibility: Building a Tool to Measure the Blast Radius of Library Changes

By Roberto Perez Alcolea, Java Platform TeamQuasar connects a proposed API change with observed references in consumer repositories, giving the producer evidence for a release decisionAt Netflix, shared Java libraries support applications developed across a large, independently evolving repository ecosystem. A library change begins in one repository, but its impact can reach many others. Producers can see the API diff in front of them. What they often cannot see is who still depends on the symbols that changed.The need for that visibility grows…

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