Is it possible to “squeeze out” a high performance from a WordPress site? Our answer is yes! In this article we show how to set up a WordPress site configured to sustain high loads up to 10,000 clients per second, what equates to 800 million visits a day.
First, we need own virtual private server (VPS). For testing we used a VPS leased from DigitalOcean (monthly rate USD 20) with the following parameters: 2GB of memory, 2 processors, 40GB on SSD. CentOS Linux release 7.3 has been chosen as the operating system.
The text below is almost a step-by-step instruction for experienced administrators. We will provide here only those parameters, which differs from default ones, and increase server performance. So, go ahead!