Idempotent Payloads vs. ETag Conditional Requests for Safe Retries in Portainer API
The goal is to safely retry failed API calls through Portainer without causing duplicate writes when interacting with the Docker daemon via the /api/endpoints/{id}/docker proxy. Portainer documents that create/update operations are idempotent when the request includes a stable identifier, and that conditional requests using If‑Match/ETag prevent duplicate wr