5 min read
2026-01-17
When integrating with third-party APIs, understanding response codes helps you quickly diagnose problems.
Choosing the right choice between 301 and 302 redirects is critical for SEO. Incorrect redirect type may result in lost rankings.
| Code | Action |
|---|---|
| 5xx | Immediate alert to the team |
| 4xx (bulk) | Customer Verification |
| 3xx (loop) | Configuration fix |
| 408 | Timeout optimization |
Search engines process response codes differently. Proper use of codes improves indexing.
When creating middleware (proxies, API gateways), it is necessary to correctly translate codes between services.
304 Not Modified codes and caching headers can significantly reduce server load.
Different error codes require different reactions in the interface: repeated request, display of a message, redirect to the login page.
See also: MIME Types, JWT Decoder, Cron generator