Amr MohamedZero-downtime migrations
Walks Postgres schema changes that don't block writers. Additive first, backfill, constraint last.
v2.0·Updated 49 days ago·Tested on claude-sonnet-4.6·MIT
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◆Prompt
Markdown bodyZero-downtime migrations
Add columns nullable, backfill, then constrain. Rename via double-write. Drop last.