The maximum limit for connections enabled by default is 100 to the mongod which is part of a replica set or standalone.
When we have a sharded cluster do the same value remains for the mongos?
Apologies for the late response!
The maxPoolSize of 100 is a driver-side parameter that is intended for the application connection to MongoDB.
Sharding has different pool size parameters which you can read here:
If you have any doubts, please feel free to reach out to us.
Thanks,
Kushagra
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