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My company administrates an important local web site, whose hosting service is integrated by 3 big cloud instances. Despite site is online, we have noted that hosting configuration is not good, letting down web site sometimes.
We think that problem could be apache (in one of the most important hosting instances, apache can use 12 of 16gb total RAM memory), however, we have not managed to improve server performance trough apache tunning.
We need a Linux-apache specialist to check out our servers configuration and improve its performance. We need to be sure about web site hosting stability.