Charles Bochet
06efee1eef
## Summary Replace the single `metadataVersion` integer with per-entity-type **collection hashes** for granular metadata staleness detection. The backend already generates a UUID per flat entity map on each cache recompute (`crypto.randomUUID()` in `WorkspaceCacheService`); we now expose these via the minimal metadata endpoint and SSE events so the frontend can compare and know exactly which entity types are stale. ### Key changes **Backend:** - `WorkspaceCacheService.getCacheHashes()` — new public method that reads only `:hash` keys from Redis without fetching full data - `MinimalMetadataDTO` — added `collectionHashes: Record<string, string>` (JSON scalar mapping `AllMetadataName` → collection hash), removed `metadataVersion` - `MetadataEventDTO` — added optional `updatedCollectionHash` field to SSE events - `MetadataEventsToDbListener` — reads the collection hash for the affected entity type after cache invalidation and attaches it to the SSE event before publishing - `MinimalMetadataService` — no longer queries the workspace table; uses `getCacheHashes()` for all flat entity maps and maps cache keys to `AllMetadataName` locally **Frontend:** - `metadataCollectionHashesState` — new Jotai atom with `atomWithStorage` + `getOnInit: true` storing `Partial<Record<MetadataEntityKey, string>>` - `mapAllMetadataNameToEntityKey()` — explicit mapping from backend `AllMetadataName` to frontend `MetadataEntityKey` (23 entries) - `useLoadMinimalMetadata` — stores `collectionHashes` from server, computes `staleEntityKeys` by comparing local vs server hashes - `patchMetadataStoreFromSSEEvent()` — accepts optional `updatedCollectionHash` and updates `metadataCollectionHashesState` - All 11 SSE effect components — pass `eventDetail.updatedCollectionHash` through to the patch function - `useStaleMetadataEntities` — new hook returning entity keys missing from collection hashes (not yet loaded/synced) - `resetMetadataStore()` — also clears collection hashes - Deleted `metadataVersionState` (superseded by collection hashes) ### Design decisions - **No change to hash generation** — existing `crypto.randomUUID()` is sufficient. Hashes are persisted in Redis, survive server restarts, and change only on `invalidateAndRecompute`. - **"Collection hash" naming** — used consistently to clarify the hash represents an entire entity collection (e.g., all views), not a single record. - **Mapping localized** — backend `WorkspaceCacheKeyName` → `AllMetadataName` mapping lives in the minimal metadata service. Frontend `AllMetadataName` → `MetadataEntityKey` mapping lives in a local utility. Nothing in `twenty-shared`. - **Backward compatible** — `collectionHashes` is additive; `updatedCollectionHash` is nullable.
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Why Twenty
We built Twenty for three reasons:
CRMs are too expensive, and users are trapped. Companies use locked-in customer data to hike prices. It shouldn't be that way.
A fresh start is required to build a better experience. We can learn from past mistakes and craft a cohesive experience inspired by new UX patterns from tools like Notion, Airtable or Linear.
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Below are a few features we have implemented to date:
- Personalize layouts with filters, sort, group by, kanban and table views
- Customize your objects and fields
- Create and manage permissions with custom roles
- Automate workflow with triggers and actions
- Emails, calendar events, files, and more
Personalize layouts with filters, sort, group by, kanban and table views
Customize your objects and fields
Create and manage permissions with custom roles
Automate workflow with triggers and actions
Emails, calendar events, files, and more
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- TypeScript
- Nx
- NestJS, with BullMQ, PostgreSQL, Redis
- React, with Jotai, Linaria and Lingui
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