What are HTTP status codes?

HTTP status codes are essential three-digit responses from servers that indicate the outcome of a client's request, crucial for maintaining stable applications and preemptively addressing issues. They are categorized into informational (1xx), success (2xx), redirection (3xx), client error (4xx), and server error (5xx) responses, each serving a specific purpose in web interactions. Proper management of these codes across different environments is vital for consistent application behavior, as discrepancies can lead to poor user experiences, complex debugging, and security concerns. Implementing best practices involves using specific error codes, maintaining consistent error message formats, and integrating environment cloning tools like Upsun for testing and validation. This approach allows developers to handle status codes effectively, ensuring robust error handling and system resilience across development, staging, and production environments.

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