Understanding the MongoDB Architecture and Processes - MongoDB High Availability - page 7

Note
To acquire more information about MongoDB and all its parameters, you can visit the
MongoDB documentation page at http://docs.mongodb.org/manual/reference/program/
mongo/ .
Learning about mongos
The mongos instance is responsible for routing read/write commands to shards in a
sharded cluster. In fact, all processes and applications will connect to this instance and run
queries, then the mongos instance will route commands to available shards. The applica-
tions will not interact with shards directly. To run the mongos instance, we can provide
sharded cluster configurations using a config file or command-line parameters.
In further chapters, we will discuss this process in detail.
Note
To gain more knowledge about the mongos command and its parameters, you can visit
the MongoDB documentation page at http://docs.mongodb.org/manual/reference/pro-
gram/mongos/ .