Ubuntu 21.04 Install google’s mod pagespeed for apache

Pagespeed is an output filter for Apache 2.2+ that can be configured through a variety of options through configuration files or a .htaccess file.
Install and Review GoAccess Apache Log Analyzer [ Guide ]

GoAccess is an open source real-time web log analyzer and interactive viewer that runs in a terminal in *nix systems or through your browser.
Apache CouchDB NOSQL database solution

CouchDB is a free and an open source NOSQL database solution implemented in the concurrency-oriented language Erlang. It has a document-oriented NoSQL database architecture. It uses JSON to store data, JavaScript as its query language using MapReduce, and HTTP for an API. CouchDB implements a form of multi-version concurrency control, so it does not lock […]
Fix: Leverage browser caching not enabled

Have you ever tested your website for speed with googles website test tool? Then you have seen the error: Leverage browser caching not enabled. To fix this you need to enable and configure mod_expires in Apache web server.