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Avoid repeated exceptions from malformed Kafka Base64 headers with AdaptiveLatch ("quick" fix) - #12672

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dougqh wants to merge 13 commits into

experiment/base64-guard-benchmark

Commits on Oct 5, 2026
- Add JMH benchmark exploring a generic guarded-decode/breaker pattern
  
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  0c69ed9
- Rework the Base64 guard benchmark around an abstract DynamicLatch
  
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  94ca267
- Name the DynamicLatch hooks handle and isKnownToFail
  
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  89ad750
- Add benchmark results for the Base64 guard and the DynamicLatch sketch
  
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  2bf5cf8
- Rename the DynamicLatch sketch to AdaptiveLatch and add a fallback
  
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  453da2d
- Align AdaptiveLatch names with Latch and ClassLatch
  
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  de594c3
- Guard Kafka header Base64 decoding against repeated exception cost
  
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  e557201
- Move AdaptiveLatch into production and build the Kafka Base64 guard on it
  
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  140a424
- Add AdaptiveLatchBenchmark
  
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  6397d31
- Switch the Base64 guard between the JDK decoder and an exception-free one
  
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  70784c1
- Pass AdaptiveLatch's closeAfter to the constructor
  
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  7342402
- Mark AdaptiveLatch as @ThreadSafe
  
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  3c7c25f
Commits on Oct 6, 2026
- Merge branch 'master' into experiment/base64-guard-benchmark
  dougqh
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  b9c3c99