How to monitor errors and performance in Cloud Functions with Open Telemetry

on YouTube ↗16m

" summary

Cloud Functions for Firebase runs with native GCP integrations like Cloud Logging and Cloud Trace and is instrumented with OpenTelemetry to emit structured logs, custom metrics, and traces. Traces reveal a tail latency caused by over 100 sequential Firestore queries; switching to array-contains-any (batching up to 10 IDs) plus concurrent Promise.all requests cuts a 6+ second 99th percentile to ~100 ms. Instrumentation and exporters to Google Cloud fixing the issue.

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" chapters (4)

1. 0:00Start
2. 7:55Cloud Logging: Powerful Queries
3. 8:20Cloud Logging: Custom Metrics
4. 9:57Traces and Spans

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