Where does the emqtt stores data

Question

In Emqtt where does it stores all the information regarding the client subscription, nodes details, statistics, etc. As per some article I found that it'll be stored in data/mnesia folder for each node. Is is correct?? if correct then how it'll store.

Answer 1

The persistent data like retain messages are stored in data/mnesia folder, but the information you mentioned like subscriptions, connections and metrics are stored in the memory only, using either ETS or Mnesia tables.