SynchronizedMemoryStore has been deprecated?

Rails is telling me:

DEPRECATION WARNING: ActiveSupport::Cache::SynchronizedMemoryStore has been deprecated in favor of ActiveSupport::Cache::MemoryStore

Googling SynchronizedMemoryStore deprecated finds no discussion or documentation. I'm guessing that ActiveSupport::Cache::MemoryStore is now thread safe, but it's a little odd to find zero mention of it anywhere.

Anyone know what the deal is?

Solution

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