26 February 2011 15:15
The Unofficial Guide to Migrating Off of Google App Engine
by night.kame
Unfortunately, if the data store starts acting up, Google's code uses an exponential backoff algorithm that could cause the export process to grind to a halt (I never actually saw it recover, it just gets slower). Moreover, because export processes take days, you will need to run a nohup background process, but Google's export script requires an interactive login.
Here is my suggestion: spin up a dedicated EC2 instance, push your code and install Google App Engine linux, embed your username/password directly into the script, remove the exponential backoff, and then run the following
Comment exporter un gros jeu de données de Google App Engine ? C'est simple, allez à la concurrence chez Amazon et lancer l'export depuis là-bas, parce que là au moins, ça a une chance d'aboutir.
