Crystal Lang and Database Connection Pool

Question

I have a simple code, using Kemal Crystal Framework with a database pooled connection but only mantain connection on startup, and each request decrease by one of connection to mysql.

As a DB::Database.using_connection says on docs:

yields a connection from the pool the connection is returned to the pool when the block ends

Must not be closed !!!

https://gist.github.com/valenciaj/534b5c820462db808eac13ba6c392614

Answer 1

您必须设置max_idle_pool_size DB :: Database参数以保持打开的连接。