Plan a Deprecation Path for an Endpoint
Added 2026-11-06
Deprecation is not an announcement; it is a road for callers.
I need to retire an endpoint or field: [endpoint, callers, traffic]. Plan the path: 1) establish who calls it — logs, gateway, caller registry — and how to find out; 2) design the replacement and its migration cost, and whether old and new must coexist; 3) give a staged timeline — announce, warn, read-only, off — with observable signals per stage; 4) design the notices callers receive — headers, error codes, docs, direct messages — so they cannot miss it; 5) name the callers to contact individually first, such as large customers or critical internal systems; 6) state the conditions under which it is safe to switch off.
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Replace these placeholders 1
Swap the bracketed parts for your own details before sending.
[endpoint, callers, traffic]
How to use
An endpoint you cannot turn off is usually one whose callers you never found.
Try tweaking it
- Have it restate requirements and constraints before writing code.
- Ask for the smallest change plus a rollback path, not a full-file rewrite.
What you should get
- A minimal, runnable change with copy-ready code
- Impact list: which files and call sites must follow
Common mistakes
- Asking it to touch ten files at once, then losing track of what broke what.
- Pasting only the error, with no code or version, and getting an unfixable answer.
How to check the output
- The change runs, can be rolled back, and touches nothing unrelated.
- Edge cases (empty, oversized, concurrent) are covered or explained.
Where it works
- Good for: having it restate requirements and constraints, then propose the smallest runnable change.
- Watch out: include versions and a minimal reproduction with the error, or the fix may look plausible but not fit.