Api Rate Limiting

This gives you three rate limiting strategies to keep your API from getting hammered. The token bucket implementation handles traffic bursts gracefully, while the Express middleware example gets you running in minutes with configurable windows and request caps. Nice touch including the standard response headers and tiered limits table, since you'll need those for any production setup. The Redis mention is important but light on details, so you'll want to look up a distributed implementation if you're running multiple servers. Solid reference for the fundamentals, though the sliding window algorithm only gets a table entry without actual code.