APIs and Reference

• APIs and Java libraries

  Use the Cloud client libraries for idiomatic access to Google Cloud services such as Cloud Storage and Firestore in Datastore mode (Datastore).

• appengine-web.xml

  Details about the configuration file that is used to configure App Engine deployed versions.

• dispatch.yaml

  Details about the configuration file that is used to route incoming requests to a specific service based on the path or hostname in the URL.

• index.yaml

  Details about the configuration file used to define the Datastore indexes of the data in your app.

• queue.yaml

  Details about the configuration file used to define the App Engine task queues in your app.

• web.xml

  Details about the deployment descriptor that Java web applications use map URLs map to servlets.

• Request Headers and Responses

  Details about what HTTP headers are supported as well as the request and response limits in App Engine.

• App Engine Admin API

  Use the REST and RPC APIs with any programming language to manage your App Engine applications.

• App Engine Tools API

  IDEs and other development utilities can use these APIs to perform testing and deployment of App Engine applications.

The APIs in this section are still supported, but are no longer recommended. Instead, use the Cloud client libraries.

Apps that use these superseded APIs will need to migrate to the Cloud client libraries and other services before upgrading to newer Google Cloud runtimes or other environments that support Java.

• App Engine Javadoc

  App Engine APIs that are built into the Java 8 runtime.