feat: add hammer rate limiter

[GuilhermePSF]

A Plug for rate limiting requests by IP address and user ID using Hammer.

How It Works

• Limits IP addresses to # {@ip_limit} requests per # {@interval} ms.
• Limits authenticated users (via conn.assigns[:current_user_id]) to # {@user_limit} requests per # {@interval} ms.
• If either limit is exceeded, the request is halted with a 429 Too Many Requests response.

This plug expects conn.assigns[:current_user_id] to be set by an authentication plug earlier in the pipeline.
If not present, the plug will default to treating the user as "anon".

• closes feat: rate limit requests #10

[deployum]

The preview deployment is in progress. 🟡

Open Build Logs

Last updated at: 2025-07-07 21:29:06 CET

[GuilhermePSF]

At this stage the PR is pretty useless, nothing is made that can make use of a rate limiter.

I advise watching this video from ExlixirCasts to better understand how to use this lib.