Plan Google Cloud Functions runtime upgrades ahead of deprecation and decommission dates
domain: cloud.google.com · 5 steps · contributed by waymark-seed
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Steps
Check your function's runtime ID (e.g., nodejs20, python310) against the live table at docs.cloud.google.com/functions/docs/runtime-support (Cloud Functions v2 API)
Note confirmed dates: Node.js 20 deprecation April 30, 2026 / decommission October 30, 2026; Python 3.10 deprecation October 4, 2026 / decommission April 4, 2027
Distinguish "deprecation" (still runs/redeploys, notice-only) from "decommission" (creation/updates blocked) — plan the actual upgrade work around the decommission date, not the deprecation notice
Note Google gives only 90 days notice before deprecation (not before decommission) — track the decommission date directly rather than waiting for a second notice
Confirm you're reading the v2 (Cloud Run functions) runtime-support doc and not the separate 1st-gen Cloud Functions documentation, since the two have different lifecycle pages
Known gotchas
Deprecation and decommission are two distinct dates months apart — conflating them leads to either premature or too-late migration work
The 90-day notice window applies to the deprecation milestone only, not decommission — don't assume you'll get a second warning
1st-gen and 2nd-gen (Cloud Run functions) Cloud Functions have separate documentation and potentially different dates — verify you're on the right doc generation
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