How do I clear the Apache Web cache?
Open the Apache caching PHP utility by typing “htcacheclean -r” into the terminal window. When this is completed, press “Enter” on the keyboard to formally launch the cache cleaning. During this process, the server utility thoroughly cleans and deletes any superfluous subdirectories on the server.
Does Apache cache DNS?
In apache case the DNS results are cached by apache worker process. You can have a DNS service, like nscd or dnsmasq , that is doing the DNS caching. Here are excerpts from the apache documentation. DNS resolution happens when the socket to the origin domain is created for the first time.
Does Apache restart clear cache?
You can remove a file from the cache/ directory while Apache is running, but that will not clear the memory cache. You can only clear the memory cache by restarting Apache.
How does Apache Cache work?
The most basic form of caching present in Apache is the file-handle caching provided by mod_file_cache . Rather than caching file-contents, this cache maintains a table of open file descriptors. Files to be cached in this manner are specified in the configuration file using the CacheFile directive.
Does Apache cache images?
Although the image files are static content and are cached by the browser, every time an user opens a page that links to them, they are conditionally requested, to which they send “304 Not Modified”.
How do I verify Apache caching is working?
A simple test to verify a working cache: Request a URL, e.g. curl “http://mydomain/my/page?test_param” Check that the HTTP status code is either 200, 203, 300, 301 or 410 (only those are cached, see https://httpd.apache.org/docs/2.4/caching.html)
How do I configure Apache cache control?
Apache. If you want to enable Cache-Control for all files, add Header set line outside the filesMatch block. As you can see, we set the Cache-Control header’s max-age to 3600 seconds and to public for the listed files.
What is better Apache or nginx?
NGINX performs 2.5 times faster than Apache according to a benchmark test performed by running up to 1,000 simultaneous connections. Another benchmark running with 512 simultaneous connections, showed that NGINX is about twice as fast and consumed less memory.