Most of the services like httpd, mysqld, crond, etc. are setup to start on boot when we install them. If we want to add new services to auto start on boot, we can use chkconfig utility. Below is example to auto start memcached service on boot.
Gzip compression allows reducing file size when transferring from server to user browser. We can enable Gzip compression by writing few lines of code in .htaccess file.
For enabling Gzip compression, we need Apache's mod_deflate module enabled. If it is not already enabled, you can enable using the steps provided here.
Wget is an open-source commandline tool for downloading files using HTTP.
To install wget command on CentOS, follow below steps: