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EsiForRack

What is ESI?

ESI is a standard way to assemble pages. This spec is supported by several reverse proxies.

slideshare.net/joshbuddy/to-the-edge-of-web-performance-and-beyond

Usage

In your builder, just use it.

use EsiForRack

In your HTTP responses, just normal ESI tags. If you're working within Rails, give Spackle a try.

github.com/joshbuddy/spackle

Here is an example of a response that would be parsed by EsiForRack

<html>
  <body>
    <esi:include src="/helloworld"/>
  </body>
</html>

In this case, a request to /helloworld would be made by EsiForRack to fill in the request. If your application sent: “Hey world” as a response to /helloworld the above example would be interpolated to:

<html>
  <body>
    Hey world
  </body>
</html>