Yes but this means no access to the site for the duration. I want to have read only access to the site for the duration.
2009/4/28 djidjadji <[email protected]> > > If you don't have to do it often you can use the following method. > > Make a version of the application that displays a page that the site > is temporarily under maintenance. Give an estimate for how long it > will take. > app.yaml redirects all requests to maintenance.py > > Find a time of day where the site is less busy. > Make the maintenance version current. > Update version X to the new schema. > Do the update using urls http://X.latest.myapp.appspot.com > Test the update > Make X the new version. > > This is the least hassle, I think. > > 2009/4/28 Alkis Evlogimenos ('Αλκης Ευλογημένος) <[email protected]>: > > Sometimes you want to make the datastore readonly for users to perform > some > > global changes (say schema update). > > How do people achieve this? > > Out of what I can think of: > > - Do you write another version of your application that errors on each > > request that writes to the datastore? This seems error prone and a > > maintenance headache. > > - Do you monkeypatch db.put and db.delete to unconditionally throw an > > exception and make that exception visible to the frontend? > > - Do you use hooks and pre hook datastore operations to throw an > exception > > and make that exception visible to the frontend? > > Any other ideas? > > -- > > > > Alkis > > > > -- Alkis --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~----------~----~----~----~------~----~------~--~---
