<b>Put PHP sessions in RAM</b>

<b>Put PHP sessions in RAM</b>
Every page load writes a session file to disk. On a cheap SSD that's wasted IOPS and wear.
— add to <code>/etc/fstab</code>: <code>tmpfs /var/lib/php/sessions tmpfs size=128M,mode=1733 0 0</code>
— <code>mount -a</code>
Sessions now live in RAM, evaporate on reboot (who cares, they're sessions). Same trick works for nginx <code>fastcgi_cache</code> dirs. Shaved real latency off a forum doing 10k visits/day on a single core. Try it tonight.