logseq/deps/db-sync/README.md

Logseq DB Sync (deps/db-sync)

This package contains the DB sync server code and tests used by Logseq. It includes the Cloudflare Worker implementation and a Node.js adapter for self-hosting.

Requirements

• Node.js (see repo root for required version)
• Clojure (for shadow-cljs builds)

Build and Test

Cloudflare Worker

cd deps/db-sync
yarn watch

# open another terminal
cd deps/db-sync/worker
wrangler dev

D1 Schema (Worker)

The worker no longer initializes schema at request time. Apply the D1 schema via migrations during deployment/CI.

cd deps/db-sync/worker
wrangler d1 migrations apply logseq-sync-graph-meta-staging --env staging
wrangler d1 migrations apply logseq-sync-graphs-prod --env prod

For local development, run wrangler d1 migrations apply DB --local.

Node.js Adapter (self-hosted)

Build the adapter:

cd deps/db-sync
npm run build:node-adapter

Run the adapter with Cognito auth:

DB_SYNC_PORT=8787 \
COGNITO_ISSUER=https://cognito-idp.us-east-1.amazonaws.com/us-east-1_dtagLnju8 \
COGNITO_CLIENT_ID=69cs1lgme7p8kbgld8n5kseii6 \
COGNITO_JWKS_URL=https://cognito-idp.us-east-1.amazonaws.com/us-east-1_dtagLnju8/.well-known/jwks.json \
node worker/dist/node-adapter.js

Tests

Run db-sync tests (includes Node adapter tests):

cd deps/db-sync
npm run test:node-adapter

Environment Variables

Variable	Purpose
DB_SYNC_PORT	HTTP server port
DB_SYNC_BASE_URL	External base URL for asset links
DB_SYNC_DATA_DIR	Data directory for sqlite + assets
DB_SYNC_STORAGE_DRIVER	Storage backend selection (sqlite)
DB_SYNC_ASSETS_DRIVER	Assets backend selection (filesystem)
SENTRY_DSN	Sentry DSN
SENTRY_RELEASE	Release identifier for Sentry events and sourcemaps
SENTRY_ENVIRONMENT	Sentry environment name (prod, staging, etc.)
SENTRY_TRACES_SAMPLE_RATE	Traces sample rate (0.0 - 1.0)
COGNITO_ISSUER	Cognito issuer URL
COGNITO_CLIENT_ID	Cognito client id
COGNITO_JWKS_URL	Cognito JWKS URL

Notes

• Protocol definitions live in docs/agent-guide/db-sync/protocol.md.
• DB sync implementation guide is in docs/agent-guide/db-sync/db-sync-guide.md.