How can I tell if Railgun is running on my site?
  When a request is handled by Railgun, Cloudflare inserts a header with diagnostic information to track how the protocol is doing. If you want to see t...
Wed, 15 May, 2019 at 9:16 AM
Rackspace and Railgun
If you are hosting with Rackspace, then Railgun is available to customers on the Cloudflare Business or Cloudflare Enterprise. These operating systems are ...
Wed, 15 May, 2019 at 9:17 AM
What is Railgun?
Railgun is a web proxy system built for Cloudflare, that allows dynamic content for a website (such as the HTML) to be cached, while also allowing changes...
Wed, 15 May, 2019 at 9:17 AM
Best practices for Railgun and a Load Balancer
If you are looking to use CloudFlare Railgun to optimise the load times of dynamic (non-cached) content and you currently utilise a load balancer, a firewal...
Wed, 15 May, 2019 at 9:19 AM
Where can I find the documentation for installing Railgun?
The documentation for Railgun,  including install directions for Railgun, can be found in our Railgun documentation. 
Wed, 15 May, 2019 at 9:20 AM
What do the HTTP/2 and SPDY protocols do?
SPDY is an open networking protocol developed primarily at Google for transporting web content to help make web pages load faster and reduce latency. HTTP/2...
Wed, 15 May, 2019 at 9:21 AM
How can I tell if HTTP/2 or SPDY is working for my website?
*Note: HTTP/2 and SPDY are not used for the connections between Cloudflare and the Origin server. Read more here. When a client makes a connection to yo...
Wed, 15 May, 2019 at 9:23 AM
Who can use HTTP/2 and SPDY?
Both SPDY and HTTP/2 are available to all Cloudflare plans and customers using Universal SSL. While SPDY is enabled by default for all customers using SSL o...
Wed, 15 May, 2019 at 9:23 AM
HTTP/2 Server Push
Cloudflare released HTTP/2 support in December of 2015 for all customers. HTTP/2 is an update to the commonly used HTTP/1.1 protocol. A powerful feature...
Wed, 15 May, 2019 at 9:30 AM
Are the HTTP/2 or SPDY protocols supported between Cloudflare and the origin server?
The HTTP/2 specification is focused on improving the browser behavior at this point. Therefore we do not support SPDY or HTTP/2 between origin server and C...
Wed, 15 May, 2019 at 9:31 AM