I will install redis or varnish or memcached on vps

Redis enables you to write traditionally complex code with fewer, simpler lines. With Redis, you write fewer lines of code to store, access, and use data in your applications. The difference is that developers who use Redis can use a simple command structure as opposed to the query languages.

Varnish cache is a web application accelerator also known as caching HTTP reverse proxy. It acts more like a middle man between your client (i.e. user) and your web server. That means, instead of your web server to directly listen to requests of specific contents all the time.

Memcached can serve cached items in less than a millisecond, and enables you to easily and cost effectively scale for higher loads. Memcached is popular for database query results caching, session caching, web page caching, API caching, and caching of objects such as images, files, and metadata.

You need to have a registered domain name and a ready to use vps account and I will do the rest for you.

Key Pairs are required to Login into the server securely. The Security key can only be downloaded once, so, keep it safe always, as missing the same would lock you from accessing your server.