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In client applications, a connection pool is a cache of connections maintained so that the connections can be reused when future requests to the resource are required. Many DBMSes also support server-side connection-pooling allowing them to service more concurrent clients than they have server-side processes or threads servicing them.

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Optimize the number of connections of the connection pool and MySQL

We are using Oracle Cloud's Ampere A1 instance consisting of 4 OCPUs (equivalent to 4 vCPUs) and 24GB of usable memory on Oracle Linux 7.9. On the server is running an java game server and a web serve …