Handling failed HTTP requests is a common challenge in web development, particularly when dealing with non-200 status codes, which indicate issues such as client or server errors. Status codes are categorized by their numerical ranges, with codes in the 400s typically representing client-side errors like authentication problems or rate limiting, and codes in the 500s reflecting server-side issues. Effective management of these errors involves implementing retry strategies to avoid overwhelming servers or getting blocked, utilizing tools like HTTPAdapter and the Tenacity library in Python. These tools facilitate retry mechanisms with customizable settings such as retry limits, exponential backoff, and specific status codes that trigger retries. In addition to using pre-built libraries, developers can also create custom retry logic using basic programming constructs to handle specific needs. To circumvent IP blocks and enhance the reliability of HTTP requests, employing proxies is recommended, and solutions like Web Unlocker API and Scraping Browser offer automated handling of anti-bot measures and CAPTCHA challenges to ensure efficient web scraping.