lkananowicz
Monitoring connections pool of Ecto repo
Hi, I am looking for a way to monitor connections pool of Ecto repo. Basically we want to measure maximum capacity of our application, sort of a load/performace testing of app and DB.
We are using Postgres adapter in our application and have defined multiple repos with different pool_size options. Is there an existing library or examples on how to check/count active DB connections in real time? We were considering db_connection behaviour callbacks but just not sure if this is the right direction.
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josevalim
Ecto emits telemetry events for every query: https://hexdocs.pm/ecto/Ecto.Repo.html#module-telemetry-events
You can use it to track how long you are awaiting on the queue, the query time, as well as decoding time.
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