The following list shows which services are supported in second-generation runtimes:
| App Engine service | Availability in Python | Alternatives |
|---|---|---|
|
App Identity
|
Available | Migrate to Open ID Connect (OIDC) ID tokens or Identity Platform |
|
Blobstore
|
Available | Migrate to Cloud Storage |
|
Capabilities
|
Available | No alternatives, see the Google Cloud Service Health dashboard or the Google Cloud console support page for information on service status |
|
Deferred
|
Available | No alternatives since this API is used with App Engine Task Queues |
|
Images
|
Available | Migrate to Cloud Storage to serve images directly, or use a third-party content delivery network (CDN) or image processing library |
|
Logging
|
Not supported | Use standard logging libraries |
|
Namespaces
|
Available | No alternatives since this API is used with other App Engine services |
|
Datastore
|
Available | Migrate to Datastore client libraries |
|
Mail
|
Available | Migrate to an SMTP-based email service , such as SendGrid, Mailgun, or Mailjet for outbound messaging only |
|
Memcache
|
Available | Migrate to Memorystore |
|
Modules
|
Available | Use environment variables and the App Engine Admin API to obtain information and modify your application's running services |
|
NDB
|
Available | Migrate to Cloud NDB |
|
Remote
|
Not supported | Use Cloud Client Libraries to access resources in other projects |
|
Search
|
Available | Migrate to Elasticsearch |
|
Task Queues
|
Available | Migrate to Cloud Tasks for push queues and Pub/Sub for pull queues |
|
URL Fetch
|
Available | Migrate to standard libraries for outbound requests |
|
Users
|
Available | Migrate to user authentication options |
For more information, refer to the user guides located on the left-side navigation or see the API reference documentation .
