mongos-sharding 连接池配置

Maximum number of outbound connections each TaskExecutor connection pool can open to any given mongod instance. The maximum possible connections to any given host across all TaskExecutor pools is

Minimum number of outbound connections each TaskExecutor connection pool can open to any given mongod instance.

The number of Task Executor connection pools to use for a given mongos. The parameter has a minimum value of 4 and a maximum value of 64.

Maximum number of simultaneous initiating connections (including pending connections in setup/refresh state) each TaskExecutor connection pool can have to a mongod instance. You can set this parameter to control the rate at which mongos adds connections to a mongod instance.

Maximum time the mongos waits before attempting to heartbeat a resting connection in the pool.

Maximum time the mongos waits for a heartbeat before timing out the heartbeat

Maximum time that mongos goes without communication to a host before mongos drops all connections to the host.