Performance

A Content Delivery Network (CDN) is a global network of servers that caches your website's static content (like images and CSS files). It speeds up your site by delivering that content from the server geographically closest to each visitor, drastically reducing data travel distance. You can manage all aspects of the CDN service directly from the CDN section in your Control Panel. Each CDN slot can be assigned to a specific hostname, such as www.example.com or cdn.example.com. When you enable CDN for the www subdomain (for example, www.example.com), the CDN will also be automatically activated for the apex domain (example.com). Enable CDN Purge Cache Bypass CDN Caching Stats Logs Disable CDN Notes Enable CDN When you click the Enable CDN button, you will need to select the hostname from the drop-down list. CDN can be enabled for any subdomain or parked domain associated with your account. If your domain is using our DNS service, the DNS records required for the CDN will be configured automatically. However, if you are using an external DNS service, the Enable CDN dialog will display the DNS records that you need to configure manually once the CDN is activated. CDN activation may take up to 30 minutes to complete, but your website will remain fully accessible during this period. Once the process is finished, the status of the CDN will change from Enabling CDN to Enabled. You will also receive an email notification confirming the activation. If you are using an external DNS service, the notification will include the DNS records you need to configure with your DNS provider. Keep in mind that DNS changes may take some time to propagate globally. Purge Cache You can use the Purge button to clear cached content from all CDN edge servers. This forces the CDN to fetch updated content from your server, which is useful after major updates or fixes. Bypass CDN caching You can use the Bypass CDN caching button to temporarily disable caching while continuing to route traffic through the CDN. This option is particularly useful during website development or troubleshooting, when you need to see immediate content updates without cached data interfering. The status of the CDN will display as Cache bypassed until you re-enable caching. Stats The Stats subsection gives you an overview of how your CDN is performing across all CDN-enabled hostnames. It shows traffic volume, cache efficiency, request counts, and HTTP response codes for a selected time period. You can filter by hostname and date range. The following terms are used throughout this section: Edge traffic - the total amount of data the CDN delivered to your visitors from its edge servers, including both cached and non-cached responses. Origin traffic - the amount of data the CDN had to fetch from your hosting server because the requested file was not available in the cache. A lower origin traffic compared to edge traffic means your CDN cache is working well. Cache hit ratio - the percentage of traffic served from the CDN cache without contacting your hosting server. The CDN caches static files by default, so the ratio reflects cached static content only. A higher ratio means better CDN performance. Total requests - the total number of HTTP requests made to your website during the selected period, counting both cached and non-cached responses. Response status groups - a chart that groups HTTP responses into four categories: 2xx (successful requests), 3xx (redirects), 4xx (client errors such as page not found or too many requests), and 5xx (server errors). A healthy site should have mostly 2xx responses. Edge status codes - the HTTP responses the CDN returned to your visitors. Origin status codes - the HTTP responses the CDN received from your hosting server. Edge and origin status codes are usually similar, but can differ when the CDN handles an error or redirect without contacting your hosting server. Error details - a table listing specific error codes with their count at the edge and origin level. Common ones include 403 (Forbidden), 404 (Not Found), 429 (Too Many Requests), 500 (Internal Server Error), 502 (Bad Gateway), and 504 (Gateway Timeout). Logs The Logs subsection shows a detailed log of individual requests processed by the CDN. You can use it to investigate specific errors, check cache behavior, or identify traffic from a particular IP address. Filters - You can filter logs by hostname, date range, HTTP method, status code, cache status, and client IP address. Click Search to apply the filters. The Filter results field at the top of the table narrows down the already loaded results by keyword without making a new search. Columns - The table includes the following columns: Date, Requested URL, HTTP Method, Status Code, Cache Status, Client, and Details. Disable CDN When you click the Disable CDN button, the CDN service for the selected hostname is turned off. You will also receive an email notification confirming the deactivation. If your domain is using our DNS service, the hostname will automatically be pointed back to your server. However, if you are using an external DNS service, you must update your DNS records to point to your origin server before disabling CDN. Failing to do so may result in service disruptions. Notes If you have an SSL certificate, it will be uploaded to the CDN automatically. This ensures that secure connections are maintained without requiring any additional configuration on your part. The CDN cache handles the following common static file extensions: avi,bmp,bz2,class,css,divx,doc,docx,exe,gif,gz,ico,jpeg,jpg,js,mov,mp3,mpeg,mpg,ogg,png,ppt,pptx,qt,svg,swf,tar,tbz,tgz,tif,tiff,txt,wav,wma,xls,xlsx,zip CDN can also be enabled for hostnames that already have Server-side Caching enabled. Both layers of caching can work together to optimize content delivery.

Redis is an in-memory caching service. It stores frequently requested data in memory so your website or application does not need to generate the same data repeatedly. Redis Object Cache is especially useful for dynamic platforms such as WordPress, WooCommerce, and other applications, where object caching can improve performance by reducing repeated database requests. Redis is fully integrated into the Control Panel through a dedicated Redis Object Cache section. Create a Redis instance Connect WordPress to Redis Connect another application to Redis Purge the Redis cache Start or stop a Redis instance Redis instance status   Create a Redis instance If Redis has been purchased as an upgrade option, the Redis instance is created automatically. On plans with WebApps support, no separate Redis purchase is required. To start using Redis, open the Redis Object Cache section in the Control Panel, click Create, and choose the memory size for the instance. If you are not sure whether Redis is included in your hosting plan, please contact us and we will be glad to assist you. Connect WordPress to Redis You can connect WordPress to Redis either during a new installation or later through the WordPress Manager in the Control Panel. This eliminates manual configuration and lets you enable Redis caching for WordPress with just a few clicks. For a new WordPress installation: Start a new WordPress installation from the WordPress Manager in the Control Panel. Next to Redis Object Cache, click Manage: Select the Redis instance you want to use: Click Save. Complete the installation. For an existing WordPress installation: Open WordPress Manager in the Control Panel. Open the management page for the WordPress installation. In the Performance section, click Manage next to Redis Object Cache: Select the Redis instance you want to use: Click Save. Note: WordPress Manager automatically installs and configures the Redis Object Cache plugin. If another object caching solution is already enabled in WordPress, you must disable it before connecting the site to Redis, or reconfigure it manually to use the listed Redis socket. Only one object caching solution can be active in WordPress at a time. Connect another application to Redis You can also use Redis with other applications that support Redis connections. Your application must be configured to connect to Redis over a Unix socket. Open the Redis Object Cache section in the Control Panel. Locate the Redis instance you want to use. Click the socket path, marked with a power plug icon, to copy it to the clipboard: Use the copied socket path in your application's Redis configuration. Note: If your application uses PHP, you must enable the Redis PHP extension. To do this, open the PHP Settings section in the Control Panel and click Manage (gear icon) for the subdomain you want to configure (for the main website, this is the www subdomain). On the PHP settings page, enable the Redis extension and then click Save changes. Important: The Redis instance integrated into the Control Panel is non-persistent. It is designed for object caching and temporary data only and must not be used for permanent data storage. Redis is configured with the maxmemory-policy allkeys-lru eviction policy, which means the least recently used keys can be removed automatically when the memory limit is reached. Purge the Redis cache Purging the cache can be useful after major content changes, configuration updates, or when troubleshooting. To purge the cache: Open the Redis Object Cache section in the Control Panel. Locate the Redis instance you want to manage. Click Purge next to that instance. This removes the currently cached data from the selected Redis instance. The Redis instance itself remains active and your application can continue using it. Start or stop a Redis instance You can start or stop a Redis instance at any time: Open the Redis Object Cache section in the Control Panel. Locate the Redis instance you want to manage. Click Start or Stop next to that instance. Warning: If you stop a Redis instance, any applications that use it may stop working until the instance is started again. Redis instance status The Status column shows the current condition of the Redis instance based on its memory usage and cache activity: Healthy - The current memory allocation is sufficient for the present workload. Moderate - The cache usage is approaching the current memory allocation. Monitor the hit rate and evictions to maintain optimal performance. Strained - The cache is near capacity and evicting items. The current memory allocation may be insufficient for the present workload. Consider increasing the memory allocation if this status continues. Click View stats to view the instance statistics: The statistics window shows the current status of the instance and key metrics such as memory usage, hit rate, evictions, connections, and operations per second. It also includes charts for memory usage and cache efficiency, helping you assess whether the current memory allocation is sufficient.

Memcached is a high-performance, distributed memory object caching system. It acts as an in-memory key-value store for small chunks of arbitrary data (strings, objects) such as the results of database calls, API calls, or page rendering. Memcached can improve the speed of your website or application by providing quick access to frequently accessed data. Memcached is fully integrated into the Control Panel through a dedicated Memcached Object Cache section. Create a Memcached instance Connect an application to Memcached Purge the Memcached cache Start or stop a Memcached instance Memcached instance status   Create a Memcached instance If Memcached has been purchased as an upgrade option, the Memcached instance is created automatically. On plans with WebApps support, no separate Memcached purchase is required. To start using Memcached, open the Memcached Object Cache section in the Control Panel, click Create, and choose the memory size for the instance. If you are not sure whether Memcached is included in your hosting plan, please contact us and we will be glad to assist you. Connect an application to Memcached You can use Memcached with any application that supports Memcached connections. The application must be configured to connect to Memcached through a Unix socket. Open the Memcached Object Cache section in the Control Panel. Locate the Memcached instance you want to use. Click the socket path, marked with a power plug icon, to copy it to the clipboard: Use the copied socket path in your application's Memcached configuration. Note: If your application uses PHP, you must enable the Memcached PHP extension. To do this, open the PHP Settings section in the Control Panel and click Manage (gear icon) for the subdomain you want to configure (for the main website, this is the www subdomain). On the PHP settings page, enable the Memcached extension and then click Save changes. Purge the Memcached cache Purging the cache can be useful after major content changes, configuration updates, or when troubleshooting. To purge the cache: Open the Memcached Object Cache section in the Control Panel. Locate the Memcached instance you want to manage. Click Purge next to that instance. This removes the currently cached data from the selected Memcached instance. The Memcached instance itself remains active and your application can continue using it. Start or stop a Memcached instance You can start or stop a Memcached instance at any time: Open the Memcached Object Cache section in the Control Panel. Locate the Memcached instance you want to manage. Click Start or Stop next to that instance. Warning: If you stop a Memcached instance, any applications that use it may stop working until the instance is started again. Memcached instance status The Status column shows the current condition of the Memcached instance based on its memory usage and cache activity: Healthy - The current memory allocation is sufficient for the present workload. Moderate - The cache usage is approaching the current memory allocation. Monitor the hit rate and evictions to maintain optimal performance. Strained - The cache is near capacity and evicting items. The current memory allocation may be insufficient for the present workload. Consider increasing the memory allocation if this status continues. Click View stats to view the instance statistics. The statistics window shows the current status of the instance and key metrics such as memory usage, hit rate, evictions, connections, and items. It also includes charts for memory usage and cache efficiency, helping you assess whether the current memory allocation is sufficient.