Defaults set in initializer are not reloaded when application is reloaded

[shioyama]

This seems to happen with Spring in a Rails project. When spring reloads, the defaults in the Mobility configuration are reset and not reloaded from the initializer, so you see the exception Backend option required if Mobility.config.default_backend is not set.".

Not yet quite sure why this happens, just posting this for now to remember to fix it.

[shioyama]

Quick fix for this for now is just to make sure that every model has its backend set explicitly, with e.g. backend: :key_value.

[shioyama]

Fixed this, I was using request store for the global configuration - changed it to normal memoization in 478b669 which fixes it.