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Caching

Caching is about of storing copies of files in a temporary storage location in order to insure quicker access. CDN servers cache various content to reduce the latency, DNS servers cache DNS records to speedup lookup, browsers cache html/css/js and image files to rise the speed of website load.

Please note that technologies described on Wiki pages are not necessary the part of Plesk control panel or its extensions.

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Best WordPress Caching Plugins Comparison

Knowledge Base

Enabling nginx caching

Apache and Nginx Settings – Nginx caching settings

Plesk Email Security: DNS caching is disabled! Please use a local DNS server to improve SPAM recognition via blocklists (for instance systemd-resolved)

Let’s encrypt fails if domain is configured with captcha: Your domain in Plesk is hosted on the IP address(es): 203.0.113.2 , but the DNS challenge used another IP address: 203.0.113.3.

Caching is defined to 64MB, but it gets HUGE – many many gigabytes!!!

CPU usage and webserver optimizing