PostgresIdempotencyStore

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Defined in: packages/pipeline-idempotency/src/stores/postgres.store.ts:142

IdempotencyStore backed by Postgres (pg) — a drop-in replacement that shares state across instances without a separate Redis.

Create the table once with createIdempotencyTableSql. Atomicity of setIfAbsent comes from a conditional INSERT … ON CONFLICT … DO UPDATE: an absent key is inserted, an expired key is atomically replaced, and a live conflict is left untouched. Completion/release also compare claim_id in the same SQL statement, so a stale execution cannot mutate a newer claim. The table name is validated as a plain SQL identifier (it is interpolated, not parameterized); all values are passed as bound parameters.

Example

import { Pool } from 'pg';
const pool = new Pool({ connectionString: process.env.DATABASE_URL });
await pool.query(createIdempotencyTableSql());
const store = new PostgresIdempotencyStore(pool);

Implements

IdempotencyStore

Constructors

Constructor

new PostgresIdempotencyStore(db, options?): PostgresIdempotencyStore

Defined in: packages/pipeline-idempotency/src/stores/postgres.store.ts:145

Parameters

db

PostgresQueryableLike

options?

PostgresIdempotencyStoreOptions = {}

Returns

PostgresIdempotencyStore

Methods

completeIfOwned()

completeIfOwned(key, claimId, record, ttlMs): Promise<boolean>

Defined in: packages/pipeline-idempotency/src/stores/postgres.store.ts:191

Atomically replaces the live in_progress record with record only when the existing record is still owned by claimId.

Parameters

key

string

claimId

string

record

IdempotencyRecord

ttlMs

number

Returns

Promise<boolean>

true when this claim completed its own record; false when the claim expired, was replaced, or was otherwise no longer owned by the caller.

Implementation of

IdempotencyStore.completeIfOwned

delete()

delete(key): Promise<void>

Defined in: packages/pipeline-idempotency/src/stores/postgres.store.ts:253

Unconditional delete for administrative or custom use. Pipeline failure release uses deleteIfOwned, not this method.

Parameters

key

string

Returns

Promise<void>

Implementation of

IdempotencyStore.delete

deleteIfOwned()

deleteIfOwned(key, claimId): Promise<boolean>

Defined in: packages/pipeline-idempotency/src/stores/postgres.store.ts:218

Atomically removes the live record only when it is still owned by claimId. Used by releaseOnError so a stale failure cannot delete a newer execution’s claim.