d94af2b8ea
A 64 MB page cache plus a 256 MB memory-mapped region inflate RSS and cause page-cache thrashing on small (~1 GB) instances. The PRAGMAs were added to reduce event-loop blocking on TraefikConfigManager JOINs but the memory cost outweighs the I/O benefit on the deployment shapes that hit #2120. Leave SQLite on its conservative defaults. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Database
Pangolin can use a Postgres or SQLite database to store its data.
Development
Postgres
To use Postgres, edit server/db/index.ts to export all from server/db/pg/index.ts:
export * from "./pg";
Make sure you have a valid config file with a connection string:
postgres:
connection_string: postgresql://postgres:postgres@localhost:5432
You can run an ephemeral Postgres database for local development using Docker:
docker run -d \
--name postgres \
--rm \
-p 5432:5432 \
-e POSTGRES_PASSWORD=postgres \
-v $(mktemp -d):/var/lib/postgresql/data \
postgres:17
Schema
server/db/pg/schema.ts and server/db/sqlite/schema.ts contain the database schema definitions. These need to be kept in sync with with each other.
Stick to common data types and avoid Postgres-specific features to ensure compatibility with SQLite.
SQLite
To use SQLite, edit server/db/index.ts to export all from server/db/sqlite/index.ts:
export * from "./sqlite";
No edits to the config are needed. If you keep the Postgres config, it will be ignored.
Generate and Push Migrations
Ensure drizzle-kit is installed.
Postgres
You must have a connection string in your config file, as shown above.
npm run db:generate
npm run db:push
SQLite
npm run db:generate
npm run db:push
Build Time
There is a dockerfile for each database type. The dockerfile swaps out the server/db/index.ts file to use the correct database type.