With Uniform, Sitecore content authors configure personalization rules using the standard personalization tools. Uniform converts those personalization rules into a format that can run on the CDN (also called "edge-compute instructions"). After the rules are converted, the resulting instructions are embedded in the page. This is called "emitting".
Uniform only emits personalization instructions under certain conditions. A component called a "request checker" is responsible for determining what the conditions are and whether those conditions are met.
Request checkers are defined in Sitecore configuration in the following section:
uniform > personalization > esi > requestCheckers
The default request checker is configured in the following section:
uniform > personalization > esi > defaultRequestChecker
Uniform provides the following request checkers out-of-the-box.
This request checker uses data available on the HTTP request to determine whether personalization instructions should be emitted. It supports the following values:
- Request headers
- Query string parameters
By default, if any of the following are set on the request, the request checker will return true:
- Request header
Accept-ESIis set to any value.
- Query string parameter
uniform_esiis set to any value.
This request checker always returns true. It is used for testing and debugging.
A custom request checker can be created by extending the