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Memory-efficiency pass on ClientStatsAggregator + adversarial benchmark - #11389

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dougqh wants to merge 38 commits into

dougqh/control-tag-cardinalityfrom

dougqh/metrics-memory-efficiency

Commits on May 18, 2026
- Fold AggregateMetric into AggregateEntry
  
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  d5af760
- Store peer tags as UTF8BytesString[] instead of List on AggregateEntry
  
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  fea1476
- Add miss-path JMH benchmark for ClientStatsAggregator
  
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  4d29128
- Back cardinality handlers with flat open-addressed tables
  
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  8cf1bf1
- Lazy-allocate the error latency histogram on AggregateEntry
  
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  ae91c66
- Raise per-field cardinality limits to match real workloads
  
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  a8cae22
- Add end-to-end JMH benchmark for the trace pipeline
  
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  890075b
- Add adversarial JMH benchmark targeting the metrics subsystem
  
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  cf24265
- Document adversarial-case behavior in client metrics design doc
  
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  823a5d4
Commits on May 20, 2026
Commits on May 21, 2026
Commits on May 22, 2026
- Merge remote-tracking branch 'origin/dougqh/control-tag-cardinality' into dougqh/metrics-memory-efficiency
  dougqh
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  45d9689
Commits on May 26, 2026
Commits on May 27, 2026
Commits on Jun 1, 2026
- Merge remote-tracking branch 'origin/dougqh/control-tag-cardinality' into dougqh/metrics-memory-efficiency
  dougqh
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  2986321