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O3: Instrument context endpoint with tier metrics (C1-C8) #29

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opened 2026-09-08 05:00:13 +00:00 by rock · 0 comments
rock commented 2026-09-08 05:00:13 +00:00
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Add Prometheus metrics to three-tier context retrieval:

  • C1: context_requests_total (Counter)
  • C2: context_tier1_hits_total (Counter)
  • C2a: context_tier1_duration_seconds (Histogram)
  • C3: context_tier2_hits_total (Counter)
  • C3a: context_tier2_duration_seconds (Histogram)
  • C4: context_tier3_hits_total (Counter)
  • C4a: context_tier3_duration_seconds (Histogram)
  • C5: context_budget_used_bytes (Histogram)
  • C5a: context_dropped_results_total (Counter)
  • C6: context_total_duration_seconds (Histogram)
  • C7: context_tier_distribution (Counter, labeled by tier)
  • C8: context_degraded_total (Counter)

Instrument in: context_endpoint.rs

Reference: docs/OBSERVABILITY.md Section 3

Add Prometheus metrics to three-tier context retrieval: - C1: context_requests_total (Counter) - C2: context_tier1_hits_total (Counter) - C2a: context_tier1_duration_seconds (Histogram) - C3: context_tier2_hits_total (Counter) - C3a: context_tier2_duration_seconds (Histogram) - C4: context_tier3_hits_total (Counter) - C4a: context_tier3_duration_seconds (Histogram) - C5: context_budget_used_bytes (Histogram) - C5a: context_dropped_results_total (Counter) - C6: context_total_duration_seconds (Histogram) - C7: context_tier_distribution (Counter, labeled by tier) - C8: context_degraded_total (Counter) Instrument in: context_endpoint.rs Reference: docs/OBSERVABILITY.md Section 3
rock added the memory-observability label 2026-09-08 05:00:13 +00:00
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Reference: riotpiao-poimen/poimen-memory#29