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db-backup-restore

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Actualizado14 de junio de 2026 a las 10:45

Safely back up and restore a Postgres/Supabase database — pg_dump/pg_restore, Supabase backups/PITR, and a no-data-loss restore runbook. Use before risky migrations, for disaster recovery, or when cloning prod to staging.

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m-binimran

m-binimran/dev-pack

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SKILL.md

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name	db-backup-restore
description	Safely back up and restore a Postgres/Supabase database — pg_dump/pg_restore, Supabase backups/PITR, and a no-data-loss restore runbook. Use before risky migrations, for disaster recovery, or when cloning prod to staging.

db-backup-restore

Backups are only real if you've restored one. Treat restore as the thing you're actually buying.

Back up

Logical (portable): pg_dump --format=custom --no-owner --file=backup.dump "$DATABASE_URL". Custom format restores selectively and in parallel.
Supabase: managed daily backups; enable Point-in-Time Recovery (PITR) for anything important.
Before a risky migration: take a fresh dump first. Note the timestamp and what it covers.
Store backups off the database host. Never commit a dump (it's data — and may contain PII).

Restore (runbook)

Restore into a NEW/empty target first (staging or a scratch DB), never straight over a live one: pg_restore --no-owner --clean --if-exists -d "$TARGET_URL" backup.dump
Verify row counts and a few key records match expectations before pointing anything at it.
Only then, if replacing prod, do it in a maintenance window with a fresh backup taken immediately prior.

Safety

Never restore over production without an explicit human OK and a just-taken backup. A restore is destructive — it can overwrite newer data.
Test the restore path periodically; an untested backup is a hope, not a recovery plan.
Scrub or limit PII when cloning prod → staging.

Output

The exact backup/restore commands for the situation, the target (never prod by default), and the verification step. State clearly when an action is destructive.

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name	db-backup-restore
description	Safely back up and restore a Postgres/Supabase database — pg_dump/pg_restore, Supabase backups/PITR, and a no-data-loss restore runbook. Use before risky migrations, for disaster recovery, or when cloning prod to staging.

db-backup-restore

Backups are only real if you've restored one. Treat restore as the thing you're actually buying.

Back up

Logical (portable): pg_dump --format=custom --no-owner --file=backup.dump "$DATABASE_URL". Custom format restores selectively and in parallel.
Supabase: managed daily backups; enable Point-in-Time Recovery (PITR) for anything important.
Before a risky migration: take a fresh dump first. Note the timestamp and what it covers.
Store backups off the database host. Never commit a dump (it's data — and may contain PII).

Restore (runbook)

Restore into a NEW/empty target first (staging or a scratch DB), never straight over a live one: pg_restore --no-owner --clean --if-exists -d "$TARGET_URL" backup.dump
Verify row counts and a few key records match expectations before pointing anything at it.
Only then, if replacing prod, do it in a maintenance window with a fresh backup taken immediately prior.

Safety

Never restore over production without an explicit human OK and a just-taken backup. A restore is destructive — it can overwrite newer data.
Test the restore path periodically; an untested backup is a hope, not a recovery plan.
Scrub or limit PII when cloning prod → staging.

Output

The exact backup/restore commands for the situation, the target (never prod by default), and the verification step. State clearly when an action is destructive.