If your user’s facing pages are generated on the application servers over and over again, use a caching proxy like Squid. But most importantly, there is a high chance that you’ll be making the same requests to your database over and over again. To lower your database load and save on the data transfer time, use a memory object caching system like memcached for objects that frequently utilized and rarely updated.
Produce things that are rare and valuable. Instead of wasting all day grooming superficial stuff on social media, pour your energy into mastering a difficult skill. If it’s not difficult, it won’t be rare. You won’t stand out, and success will elude you.