Optimistic Lock Contract Repair
Repair optimistic-concurrency drift in a repository using Cursor.
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You say
Review our OrderService and the orders table schema to find why concurrent status updates are causing lost updates, then provide a patch using ETags.
Your agent does
I found that UpdateOrder lacks a version check. I have:
- Added a row_version column to the schema.
- Updated the Repository to use a WHERE clause with the version.
- Added If-Match header support to the API controller.
- Created a local test case simulating two concurrent writers.
What you get
About this skill
Repair optimistic-concurrency drift in a repository using Cursor. Compare version fields, ETags, API preconditions, ORM writes, transactions, retries, background jobs, bulk edits, caches, projections, conflict responses, tests, and docs. Detect lost updates, stale-write acceptance, unsafe retries, version gaps, overwritten side effects, and false success responses; prepare bounded patches and tests without production access, merge-policy choices, historical rewrites, migrations, or deployment.
How to install
Drop the file into your AI Agent. Works with Claude, Cursor, ChatGPT, and 20+ more.
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