dorfteich/apps/api/prisma/migrations
Claude Opus 4.8 acd1cc32b7
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Add Yjs update-log compaction job (#40)
Update logs grow with every edit; compaction bounds storage and load time.

- prisma: `collab_open_sessions` table (page_id, heartbeat_at) — the
  live-session registry that lets the compaction job avoid pages being
  edited, decoupled from collab (no api↔collab network call) and self-
  healing (a crashed collab's rows age out of the freshness window).
- collab: `PostgresSessionRegistry` marks a page open on document load and
  closed on unload, and refreshes an every-30s heartbeat for all open docs;
  wired into the server hooks and started/stopped in index.ts.
- api: `CompactionService` runs hourly via the shared scheduler (#31). For
  pages with > 500 log rows and no fresh session it merges `page_updates`
  into `ydoc_state` and deletes the merged rows in one FOR UPDATE
  transaction — atomic, so a mid-run crash leaves the page untouched and the
  next run resumes. Content is unchanged (merged state = base + all updates),
  so the content cache is left as-is; updated_at is deliberately not bumped.
  Metric log line with pages compacted / rows / bytes removed.

Tests: DB-backed compaction test (content hash unchanged, below-threshold
skipped, active session skipped then picked up next run, stale heartbeat
ignored, idempotent); session-registry DB test (open/close, heartbeat
refresh).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PGdhRiwU1WRL4XxJfZYipY
2026-07-09 08:15:55 +02:00
..
20260704171456_init Add Prisma with PostgreSQL, automatic migrations, and /readyz 2026-07-04 19:16:44 +02:00
20260704224132_auth_models Add user, identity, session, and auth-support data model 2026-07-05 00:42:22 +02:00
20260705090100_ponds Ponds: data model, CRUD API, personal pond on verification (#21) 2026-07-05 11:08:16 +02:00
20260705185146_quotas Quota foundation: overrides, resolution, race-safe consumption (#22) 2026-07-05 20:55:59 +02:00
20260705200714_pages Add page CRUD and Yjs state persistence (#23) 2026-07-05 22:25:41 +02:00
20260708082627_attachments Add file storage service and image upload API (#27) 2026-07-08 10:35:03 +02:00
20260708101011_trash_and_jobs Add page trash: soft delete, restore, and purge job (#31) 2026-07-08 12:48:17 +02:00
20260709060328_collab_open_sessions Add Yjs update-log compaction job (#40) 2026-07-09 08:15:55 +02:00
migration_lock.toml Add Prisma with PostgreSQL, automatic migrations, and /readyz 2026-07-04 19:16:44 +02:00