In the 1.7.6 release of App Engine we’ve included a major upgrade to the Development Server in the Python SDK, designed to make development faster and more faithfully reproduce the production App Engine runtime environment. The new version more faithfully simulates elements of the production App Engine environment, such as concurrent requests and backends, and in most cases this will also mean your apps run faster. We previously included this in the 1.7.5 release as dev_appserver2.py, in this release it has become the default dev_appserver.py
While we're confident the improvements are substantial, as with any major change, some things work a little differently with the new dev_appserver. Here’s a few changes to watch out for: - Your local development admin console will run on it’s own server and port, rather than under /_ah/admin - We’ve changed the defaults for new applications, such as using HRD rather than Master/Slave, and using SQLlite to emulate the datastore. - We’ve cleaned up many command line flags and arguments - Python 2.5 applications are no longer officially supported on the new Development Server in line with our deprecation announcement (although they may still be run) We’ve provided a detailed summary of all the changes to the Development Server in our documentation<https://developers.google.com/appengine/docs/python/tools/old_devserver>. The the legacy dev_appserver.py remains available in the Python SDK as old_dev_appserver.py for those who still require it. However if you encounter any issues with the new Development Server we strongly encourage you to report them on our issue tracker<https://code.google.com/p/googleappengine/issues/list> . We hope you like the new changes, and that you enjoy snappier app development with fewer surprises on deployment. Keep on coding! - Andrew Jessup, for the App Engine team -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
