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Determine storage characteristics for all components that use MainStash
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This is an epic.

In order to make MainStash work correctly in an active-active DC environment, we need to know what each component that uses MainStash expects from the service.

This consists of the following:

  • Knowing what storage characteristics are important for making a decision
  • Knowing which components use MainStash for WMF servers
  • Knowing the characteristics of each component

The outcome of this will be a matrix of components x characteristics, which will be an input for deciding about strategy on MainStash implementations.

Event Timeline

Since @aaron moved all components that were using MainStash to use something else, except Echo which we're handling with T234289, I think we're done here.