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How do you use Yii’s RateLimiter component for API rate limiting?

How do you use Yii’s RateLimiter component for API rate limiting?

Answer: To use Yii’s RateLimiter component for API rate limiting, you need to:

1. Configure the RateLimiter: In your application’s configuration file (e.g., `config/web.php`), set up the rate limiter under the `components` section by specifying a strategy and rate limit parameters.

2. Implement Rate Limiting Logic: Utilize the `RateLimiter` component in your controller actions by calling the `checkRequestLimit()` method, which checks the client’s request count against the defined limits.

3. Handle Rate Limit Responses: If the limit is exceeded, you can return an appropriate HTTP response (e.g., 429 Too Many Requests) by implementing error handling.

4. Persist Usage Data: Ensure that the rate limit usage data is stored appropriately (e.g., in a database or cache) to track requests over time.

This setup ensures that your API adheres to the defined request limits per user or IP address efficiently.

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