What is cache in ClearCache and DoNotCache?

vic

We're developing an application using EMA. In Refresh and Status messages there is something like ClearCache and DoNotCache. What is meant by "cache"?

Suppose we are getting Market By Price data (market depth data) and we want to get and maintain a state of the order book. Then for every ADD, UPDATE or DELETE of prices we update our state of the order book. Then if there is a Msg with ClearCache, do we need to clear our total order book? Does cache means in this case our current state of the order book?

zoya faberov

This question appears to be a duplicate of an existent question.

Please refer to this answered question