Diagnose why our wordpress website is slow and Implement Solutions

Job ID: 32159209

Budget: $90 – $100 USD

Currently we run a wordpress site on a dedicated server with 64gb ram and 12 core cpu Linux-> LiteSpeed -> WordPress. Our website slows down dramatically during peak traffic times which is only no more than 1400 active visitor. We have implemented optimizations such as using a CDN (CLoudflare) and Caching using Plugins like WProcket. This worked for a while, however as traffic increased, it has started to become slow again.

What we need: We need someone who can diagnose what is causing the slowness/using resources during peak time periods and to implement solutions. (For example, is it too many database queries?)

Good knowledge of how WordPress queries data is important as well as Linux (Centos 7) handles requests. Knowledge of Nginx, Fast CGI and Redis (for object caching/dynamic content) are also important.
Related categories: Linux WordPress Apache Nginx MySQL