Wednesday, April 4, 2012

Master/Slave Datastore, thanks for all your hard work


Almost 4 years after launch, we’ve seen fantastic growth both in Google App Engine and the apps that run on it. And although the Master/Slave Datastore was a big part of our early success, it's time to announce the deprecation of the Master/Slave Datastore in favor of the High-Replication Datastore (HRD). HRD has provided us with higher availability and better, more predictable performance. Many upcoming features will be HRD-only and we strongly encourage you to migrate all your applications as soon as possible using the migration tools found in the Application Settings tab of the Administration Console. The deprecation period will follow the guidelines set in our terms of service. If you have any questions or concerns, please contact us at ms-datastore-deprecation@googlegroups.com.


- Posted by Max Ross, on behalf of the App Engine Datastore Team

3 comments:

Ryan said...

this is a huge deal. congrats for all the work you've done to get to this point, datastore and operations teams!

master/slave datastore, you've earnede your keep and you deserve a rest. HRD, it's your time to shine!

Igor said...

Can we expect migration within the same app ID in the future? It doen's suit me to change app id.

Donald King said...

@Igor:

Step 11 of "Running the Migration Tool" is aliasing the old name to point at the new app. The App ID itself changes, but the existing URLs should continue working.