Do connection pools shrink with idle connections?

[bruno-viva]

Hi,

I launched my migration to boost mysql recently and I noticed that once the connection count gets to the maximum, the "threads connected" metric in the MySql server doesn't go down. Does that mean that the connection pool never shrinks? Or did I miss something?

Thanks in advance!

[anarthal]

No, they never shrink, at least at the moment. But I'm open to implementing a shrinking algorithm. What kind of algorithm would you expect? Looking at similar algorithms, maybe a idle_period after which connections above initial_size that haven't been used are closed and destroyed?

[bruno-viva]

Thanks @anarthal . Sounds good to me!