CachingDirectives

Use these directives to “wrap” expensive operations with a caching layer that runs the wrapped operation only once and returns the the cached value for all future accesses for the same key (as long as the respective entry has not expired). See caching for an introduction to how the caching support works.

To enable caching support add a library dependency onto:

sbt

libraryDependencies += "com.typesafe.akka" %% "akka-http-caching" % "10.0.15"

Gradle

dependencies {
  compile group: 'com.typesafe.akka', name: 'akka-http-caching_2.12', version: '10.0.15'
}

Maven

<dependency>
  <groupId>com.typesafe.akka</groupId>
  <artifactId>akka-http-caching_2.12</artifactId>
  <version>10.0.15</version>
</dependency>

Directives are available by importing:

Scala

import akka.http.scaladsl.server.directives.CachingDirectives._

Java

import static akka.http.javadsl.server.directives.CachingDirectives.*;