cesnimda
955182b7c2
Route public health checks to the API, backfill and synchronize job opportunities, stabilize SPA smoke tests, and document operator-only production steps.
53 lines
1.8 KiB
Markdown
53 lines
1.8 KiB
Markdown
# Job opportunity cutover
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The release-readiness build closes the write-side gap:
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- normal application creation and Gmail suggested-job creation both create a linked `Job`;
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- edits synchronize opportunity fields through `JobOpportunitySync`;
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- startup idempotently creates one `Job` for every legacy `JobApplication` whose `JobId` is null.
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The startup backfill is additive and runs after the deployment backup. It does not drop or overwrite
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legacy application columns.
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## Production validation
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Run these read-only checks after deployment. Expected result for every count is `0`:
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```sql
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SELECT COUNT(*) AS missing_job
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FROM JobApplications
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WHERE JobId IS NULL;
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SELECT COUNT(*) AS missing_target
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FROM JobApplications a
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LEFT JOIN Jobs j ON j.Id = a.JobId
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WHERE a.JobId IS NOT NULL AND j.Id IS NULL;
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SELECT COUNT(*) AS owner_mismatch
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FROM JobApplications a
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JOIN Jobs j ON j.Id = a.JobId
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WHERE NOT (a.OwnerUserId <=> j.OwnerUserId);
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SELECT COUNT(*) AS field_mismatch
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FROM JobApplications a
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JOIN Jobs j ON j.Id = a.JobId
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WHERE NOT (a.CompanyId <=> j.CompanyId)
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OR NOT (a.JobTitle <=> j.JobTitle)
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OR NOT (a.Location <=> j.Location)
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OR NOT (a.JobUrl <=> j.JobUrl)
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OR NOT (a.Description <=> j.Description)
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OR NOT (a.Salary <=> j.Salary);
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```
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`<=>` is MariaDB/MySQL's null-safe equality operator. Do not use these statements as an update script.
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## Expand/contract release order
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1. Deploy the additive backfill and synchronized writers.
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2. Capture the validation counts above and observe one release.
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3. Change reads to use `Job`; keep compatibility columns during that release.
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4. Re-run validation against a fresh backup restore.
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5. Only then make `JobId` required and drop duplicated opportunity columns in a later migration.
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Do not combine the destructive column drop with the first production backfill.
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