Magento Nginx server configuration for speed

We want our server to run more faster Installed on our server is Nginx, fastcgi, gzip is enabled but yslow says to enable gzip. [login to view URL] keep getting 504 nginx timeout- You will sort this out. [login to view URL] has suddenly gone pretty [login to view URL] we need Memcached installed. [login to view URL] Fooman Speedster [login to view URL] 4.I think php fpm is already installed if not you will install this [login to view URL] the mysql:you need to make some metrics about the Mysql use into your site, Slow query logs, and load average.... at the moment you have the peak of users... you can have some profiles using many tools... 6. The KPI of this project is speed and we will measure speed at the beginning and at the end of this project. [login to view URL] note job is only finished if we can get atleast 25% speed increase