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Example code of rasuvaeff/yii3-idempotency-db

Informations about the package yii3-idempotency-db

rasuvaeff/yii3-idempotency-db

Stable Version Total Downloads Build Static analysis License

Database-backed idempotency storage for Yii3 APIs. Implements IdempotencyStorage from rasuvaeff/yii3-idempotency with atomic claim via INSERT (unique PK), response replay, and TTL-based expiration.

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Requirements

Installation

Usage

Basic setup

Run migration

Or use the migration class directly:

Table schema

Column Type Description
key VARCHAR(255) PK Idempotency key value
fingerprint VARCHAR(64) SHA-256 hash of method + path + query + body
status_code SMALLINT HTTP response status code
headers TEXT JSON-encoded response headers (array<string, list<string>>)
body TEXT Response body
expires_at VARCHAR(30) Expiration timestamp (UTC, Y-m-d H:i:s)
claimed BOOLEAN Whether the key is claimed (in-progress)

Yii3 integration

The package provides config/di.php and config/params.php for yiisoft/config.

Default params:

DI wiring binds IdempotencyStorage::class to DbIdempotencyStorage.

How it works

  1. Claim: INSERT with unique PK on key and expires_at = now + claimTtlSeconds. If the insert succeeds, the key is claimed atomically. A duplicate key raises a DB integrity error, which claim() converts to false; any other DB error propagates.
  2. Store: After the handler completes, the response is upserted into the row and claimed is set to 0; expires_at becomes the record TTL deadline.
  3. Load: On a subsequent request with the same key, load() reads the row. An active claim (claimed = 1, deadline not reached) returns null without deleting the row — the middleware then fails its own claim() and responds 409. A stale claim (deadline passed — crashed process) is deleted and may be re-claimed. A completed record is rehydrated via IdempotencyRecord::restore() and checked against its TTL; expired records are deleted.
  4. Release: If the handler throws (or returns 5xx), release() deletes the claim row.
  5. Cleanup: deleteExpired() removes all rows past expires_at (uses the idx_idempotency_expires_at index) — call it from a cron task.

Security

Examples

See examples/ for runnable scripts.

Development

License

BSD-3-Clause. See LICENSE.md.

All versions of yii3-idempotency-db with dependencies

PHP Build Version
Package Version
Requires php Version 8.3 - 8.5
psr/clock Version ^1.0
rasuvaeff/yii3-idempotency Version ^1.0
yiisoft/db Version ^2.0
yiisoft/db-migration Version ^2.0
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