feat(hermes): add staleness metrics #2978
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…e→broadcast latencies Co-Authored-By: Tejas Badadare <[email protected]>
… async tasks Co-Authored-By: Tejas Badadare <[email protected]>
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tejasbadadare
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ali-behjati
approved these changes
Aug 21, 2025
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Summary
Add histogram metrics to track latency in price feed updates:
publish_to_receive_latency_seconds: Time from publish_time to receive_time for each updatews_broadcast_latency_seconds: Time from receive_time to WebSocket flush timesse_broadcast_latency_seconds: Time from receive_time to SSE send timeNotes:
https://linear.app/douro-labs/issue/PF-396/hermes-price-staleness-metrics
Testing