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If you want to display only specific categories of articles on the website, you can implement them in different ways: 1. WordPress users can use built-in article blocks, plug-ins or widgets to filter categories and customize styles; 2. Developers can realize classification display through database queries, API interfaces and JavaScript dynamic filtering on the front and back ends, and pay attention to security protection; 3. Static site generators such as Jekyll and Hugo can process classification pages in the construction stage through preset classification mechanisms, without database support, and loading speed is fast. The selection method depends on the platform and technical level used.

When a WordPress page displays a blank white screen, it is usually a program error but no error message is displayed. The solution includes troubleshooting plug-ins, themes, and server configuration. 1. Check for recent actions such as installing plug-ins, replacing themes, or updating failed, try disabling new plug-ins or switching back to the default theme. 2. Turn on debug mode, set WP_DEBUG to true in the wp-config.php file, and record the error log to locate the problem. 3. Increase PHP memory limit and increase memory through define('WP_MEMORY_LIMIT','256M') to avoid crashes due to insufficient resources. 4. Clear the cache and check the server status, clean the browser, plug-in or CDN cache, and view the server

The main purpose of using Redis to pair WordPress is to improve website access speed and performance. The core is to reduce database pressure and speed up response time through Redis as a cache layer. The specific implementation is divided into three steps: First, install the Redis service and ensure it is running normally, including installing on the server, starting the service, setting up the power-on and configuring network access rights; Second, enable Redis cache in WordPress through the RedisObjectCache plug-in. After installing the plug-in, connect and set the connection according to the actual address, port and password of the Redis service, and enable the object cache function; Third, optimize the settings according to the needs, including confirming that PHP has installed Redis extensions and selecting appropriate ones.

To securely call external APIs, you need to start from three aspects: access control, data protection and response verification. ① Use APIKey, OAuthToken or JWT and store the key in environment variables or key management services, and rotate regularly; avoid the front-end exposing the key, select OAuth2.0 and adopt the appropriate authorization mode. ② Verify the structure and content of the data returned by the interface, confirm the Content-Type and field types, check the status code, filter the XSS content, and set a reasonable timeout time. ③ Use token bucket or leak bucket algorithm to achieve current limiting, record user API usage, and reduce duplicate requests in combination with cache to prevent triggering the other party from limiting the current or blocking the IP.

ToenablebrowsercachinginWordPress,useapluginoreditserverfiles.1.Checkyourcurrentsetupviahostingdashboard,cachingplugins,ortoolslikeGTmetrix.2.UseapluginlikeWPSuperCacheorW3TotalCachebyinstalling,configuringcontenttypesandexpirationtimes,andpurgingcac

When you discover a WordPress theme problem, first confirm whether it is a real theme failure. 1. Switch the default theme test. If the problem disappears, there will be problems with the original theme, otherwise check the plug-in or server; 2. Turn on debugging mode to view the error log and locate specific code problems; 3. Update the theme and plug-in to the latest version, and use sub-themes to avoid overwriting; 4. Re-download the original theme file to replace the possible damaged parts, especially the core template files.

Optimizing large WordPress websites requires starting from four aspects: database, caching, image management and plug-in control. 1. Database optimization: Regularly clean redundant data, use cache, split table structure and optimize indexes to improve query efficiency; 2. Efficient caching strategy: combine page cache, object cache and CDN acceleration to reasonably set cache expiration time; 3. Image management: compress pictures, adopt WebP format, enable delayed loading, and consider external storage to reduce server pressure; 4. Plug-in control: streamline the number of plug-ins, select high-quality plug-ins, and regularly evaluate performance impact, and use code to replace plug-in functions if necessary.

Modifying the WordPress login URL can improve website security. 1. The default login address such as /wp-login.php is susceptible to automation attacks, which can reduce risks after changing; 2. The manual method involves renaming wp-login.php and creating redirect files, but may be overwritten when updated; 3. It is recommended to use plug-ins such as WPSHideLogin, iThemesSecurity, etc. to be safer and more convenient; 4. After modification, you need to record the new address, clear the cache, check the security plug-in settings, and test the login function. This measure should be used in conjunction with other safety measures for optimal results.