Per-component / tag cardinality limits in client-side stats#11387

Open

dougqh wants to merge 257 commits into

dougqh/control-tag-cardinality

This pull request is big! We're only showing the most recent 250 commits

Commits on May 18, 2026

Merge branch 'master' into dougqh/conflating-metrics-producer-wins
dougqh
authored
Merge branch 'dougqh/conflating-metrics-producer-wins' into dougqh/conflating-metrics-background-work
dougqh
authored
Add Hashtable and LongHashingUtils to datadog.trace.util

dougqh
and
claude
committed
Add AggregateTable + AggregateEntry backed by Hashtable

dougqh
and
claude
committed
Swap LRUCache for AggregateTable in Aggregator + route disable() clear

dougqh
and
claude
committed
Eliminate MetricKey: inline its fields onto AggregateEntry

dougqh
and
claude
committed
Cap per-field metric tag cardinality via Property/TagCardinalityHandler

dougqh
and
claude
committed
Canonicalize SpanSnapshot before hashing so blocked values collapse

dougqh
and
claude
committed
Defer peer-tag pair construction; capture values + canonicalize via schema-indexed handlers

dougqh
and
claude
committed
Rename ConflatingMetricsAggregator to ClientStatsAggregator

dougqh
and
claude
committed
Cleanups: fix previousCounts size, drop dead code

dougqh
and
claude
committed
Hoist peer-tag schema sync to once per trace

dougqh
and
claude
committed
Use cached span.kind ordinal in metrics producer; drop tag-map lookup

dougqh
and
claude
committed
Add client metrics pipeline design doc

dougqh
and
claude
committed
Add unit tests for Hashtable and LongHashingUtils

dougqh
and
claude
committed
Apply spotless formatting to Hashtable and LongHashingUtils

dougqh
and
claude
committed
Add JMH benchmarks for Hashtable.D1 and D2

dougqh
and
claude
committed
Add benchmark results to HashtableBenchmark header

dougqh
and
claude
committed

Commits on May 19, 2026

Commits on May 20, 2026

Commits on May 21, 2026

Commits on May 22, 2026

Commits on May 26, 2026

Commits on May 27, 2026

Commits on Jun 1, 2026

Commits on Jun 2, 2026

Commits on Jun 4, 2026

Commits on Jun 5, 2026

Remove shouldWarnThisCycle: reset() always clears the flag before the check

dougqh
and
claude
committed

Commits on Jun 9, 2026

Commits on Jun 16, 2026

Commits on Jun 22, 2026

Commits on Jun 24, 2026

Use RFC-aligned 'collapsed:' tag prefix for stats cardinality health metrics

dougqh
and
claude
committed

Commits on Jun 29, 2026