My howtos and tuning for a lot of things that I've worked in my 20 years of *nix environment.

• linux

• solaris

• freebsd

• osx

• firewall

• mail server

• router, AS, BGP

• DNS

• mySQL

• noSQL (aerospike, memcached, redis)

• webserver ( nginx , lighttpd, apache )

• python

• perl

• PHP ( everyone has a dark side )