CloudFlare railgun is only available for business and enterprise customers of CloudFlare. Railgun uses the most advanced network optimization technique for faster content delivery. It provides 99.6% compression ratio and 200 packets of data that can be transmitted through the network at the same time. This encourages the website performance and boost up the speed.
Railgun is a premium service provided by CloudFlare company. This technology stores your website content on 40 data centers all over the world. This storage increase your website data access speed all over the world when a user from different country visits your website. Railgun will provide your website content from the visitors nearest data center. Servercake provides this service for free of cost.