Loop Engine™

Examples

Postgres Persistence

Postgres persistence keeps loop state durable across restarts while preserving runtime behavior and actor/guard semantics.

Store swap

1"cmt">// before
2const system = await createLoopSystem({ loops: [definition], store: memoryStore() })
3 
4"cmt">// after
5const pool = new Pool({ connectionString: process.env.DATABASE_URL })
6await createSchema(pool)
7const system = await createLoopSystem({ loops: [definition], store: postgresStore(pool) })

Loop definitions and transition calls stay unchanged.

Schema bootstrap

1import { createSchema } from "@loop-engine/adapter-postgres"
2import { Pool } from "pg"
3 
4const pool = new Pool({ connectionString: process.env.DATABASE_URL })
5await createSchema(pool)

Runtime status

Environment

  • DATABASE_URL points to PostgreSQL.
  • Use connection pooling for service workloads.
  • Configure SSL and timeout limits in production.

Full source

  • https://github.com/loopengine/loop-examples/tree/main/postgres-persistence