Add standby compression start delay

[sjmiller609]

Summary

• add a standby-only compression delay override on POST /instances/{id}/standby and a per-instance default in snapshot_policy
• keep delayed standby compression jobs cancelable before start and distinguish pending-delay skips from active compression cancellation
• add metrics, logs, traces, OpenAPI updates, and tests for the new standby compression delay behavior

Testing

• go test ./lib/instances
• go test ./cmd/api/api -run 'Test(CreateInstance_MapsStandbyCompressionDelayInSnapshotPolicy|CreateInstance_InvalidStandbyCompressionDelayInSnapshotPolicy|InstanceToOAPI_EmitsStandbyCompressionDelayInSnapshotPolicy|StandbyInstance_MapsCompressionDelay|StandbyInstance_InvalidCompressionDelay|StandbyInstance_InvalidRequest)$'

Notes

• go test ./cmd/api/api still hits unrelated environment-dependent volume tests on this machine because mkfs.ext4 is not available in $PATH.

[github-actions]

✱ Stainless preview builds

This PR will update the hypeman SDKs with the following commit message.

feat: Add standby compression start delay

Edit this comment to update it. It will appear in the SDK's changelogs.

✅ hypeman-typescript studio · code · diff

Your SDK build had at least one "note" diagnostic, but this did not represent a regression.
generate ✅ → build ✅ → lint ✅ → test ✅

npm install https://pkg.stainless.com/s/hypeman-typescript/4acd33407809f7bcd6d7383ecda1b3b91307ac0a/dist.tar.gz

✅ hypeman-openapi studio · code · diff

Your SDK build had at least one "note" diagnostic, but this did not represent a regression.
generate ✅

✅ hypeman-go studio · code · diff

Your SDK build had at least one "note" diagnostic, but this did not represent a regression.
generate ✅ → build ✅ → lint ✅ → test ✅

go get github.com/stainless-sdks/hypeman-go@fda1e9ba68cd13396bcc722fd19d67502b181dca

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Last updated: 2026-04-04 20:19:07 UTC