How to use HTTP status codes to improve the efficiency of AI crawlers in handling invalid pages?

When a website has dead pages, correctly configuring HTTP status codes can significantly improve the efficiency of AI crawlers in handling dead pages. AI crawlers rely on status codes to determine page status, avoiding invalid crawling and resource waste. Main application scenarios of status codes: - Temporary unavailability: Use 404 (Not Found) to inform crawlers that the page is temporarily unavailable and can be retried regularly. - Permanent deletion: Use 410 (Gone) to clearly indicate that the page has been permanently removed, and crawlers will no longer crawl it. - Page migration: Configure 301 (Permanent Redirect) to guide crawlers to crawl the new page and retain link value. It is recommended to regularly audit the website's status code configuration to ensure the accuracy of status codes for dead pages. This helps AI crawlers efficiently identify dead pages, optimize crawling logic, and improve overall content discovery efficiency.