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I created my application using “High Replication” option. Now I want to switch to “Master/Slave” option because I’m hitting my daily CPU quota.
It turns out High Replication uses “approximately three times the storage and CPU cost of Master/Slave”
Is there anyway I can do this without recreating my app? It’s not in the Application Settings page.
You can’t – once you’ve chosen a particular type of datastore, that application is bound to it. The only way to change it is exactly the way you suggested – you’d have to create a new app with the Master / Slave datastore and port your data to it.
You may want to profile your app and optimize it to use less CPU, although in the general case that may be easier said than done.