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Implementing HTTP Caching in New Resources

Implementing HTTP Caching in New Resources

For a new Helix resource, to implement HTTP caching by providing the Cache-Control header , you must create a new Helix prototype that implements the Info interface of the resource.

  1. Create the new resource.
  2. Create a Helix prototype to implement the Info interface.
    For NavigationResource, create an InfoNavigationPrototype that implements the NavigationResource.Info interface as in the following example: 
    /**
 * Navigation prototype for Info operation.
 */
public class InfoNavigationPrototype implements NavigationResource.Info {

	private static final Single<ResourceInfo> INFO_SINGLE = Single.just(ResourceInfo.builder()
			.withMaxAge(NavigationsResourceConstants.MAX_AGE)
			.build());

	@Override
	public Single<ResourceInfo> onInfo() {
		return INFO_SINGLE;
	}
}
    In the prototype, a ResourceInfo is built and the max-age for the resource is returned.