alwaysCache

Wraps its inner Route with caching support using the given spray.caching.Cache implementation and the in-scope keyer function.

Signature

def alwaysCache(cache: Cache[CachingDirectives.RouteResponse])
               (implicit keyer: CacheKeyer, factory: ActorRefFactory): Directive0

The signature shown is simplified, the real signature uses magnets. [1]

[1]	See The Magnet Pattern for an explanation of magnet-based overloading.

Description

Like cache but doesn’t regard a Cache-Control request header for deciding if the cache should be circumvented.

Note

Caching directives are not automatically in scope, see Usage about how to enable them.

Example

var i = 0
val route =
  cache(routeCache()) {
    complete {
      i += 1
      i.toString
    }
  }

Get("/") ~> route ~> check {
  responseAs[String] === "1"
}
// now cached
Get("/") ~> route ~> check {
  responseAs[String] === "1"
}
// caching prevented
Get("/") ~> `Cache-Control`(CacheDirectives.`no-cache`) ~> route ~> check {
  responseAs[String] === "2"
}