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.

Dependency

To use Akka HTTP Caching, add the module to your project:

sbt

val AkkaHttpVersion = "10.5.3"
libraryDependencies += "com.typesafe.akka" %% "akka-http-caching" % AkkaHttpVersion

Gradle

def versions = [
  ScalaBinary: "2.13"
]
dependencies {
  implementation platform("com.typesafe.akka:akka-http-bom_${versions.ScalaBinary}:10.5.3")

  implementation "com.typesafe.akka:akka-http-caching_${versions.ScalaBinary}"
}

Maven

<properties>
  <scala.binary.version>2.13</scala.binary.version>
</properties>
<dependencyManagement>
  <dependencies>
    <dependency>
      <groupId>com.typesafe.akka</groupId>
      <artifactId>akka-http-bom_${scala.binary.version}</artifactId>
      <version>10.5.3</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
  </dependencies>
</dependencyManagement>
<dependencies>
  <dependency>
    <groupId>com.typesafe.akka</groupId>
    <artifactId>akka-http-caching_${scala.binary.version}</artifactId>
  </dependency>
</dependencies>

Imports

Directives are available by importing:

Scala

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

Java

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