Custom Store

Implement the StorageAdapter interface to use any database (MongoDB, DynamoDB, PostgreSQL, etc.).

import type { StorageAdapter } from "guardo";
 
class MongoStore implements StorageAdapter {
  async set(key: string, value: string, ttlSeconds?: number): Promise<void> {
    /* ... */
  }
  async get(key: string): Promise<string | null> {
    /* ... */
  }
  async delete(key: string): Promise<void> {
    /* ... */
  }
  async keys(prefix: string): Promise<string[]> {
    /* ... */
  }
}

The interface

Method	Signature	Notes
`set`	`(key, value, ttlSeconds?) => Promise<void>`	Persist a value. Honour `ttlSeconds` for automatic expiry.
`get`	`(key) => Promise<string \| null>`	Return the value or `null` if missing/expired.
`delete`	`(key) => Promise<void>`	Remove a key.
`keys`	`(prefix) => Promise<string[]>`	Return every key starting with `prefix`.

⚠️

Honour ttlSeconds - guardo relies on it to expire OTPs, sessions, and rate-limit windows. If your backend can’t expire keys natively, track expiry yourself and filter it out in get and keys.

Redis Store Console