In this recipe, we will look at Mongo's in-built profiler that will be used to profile the operations executed on the MongoDB server. It is a utility that is used to log all operations or the slow ones and that can be used to analyze the performance of the server.
In this recipe, we will be performing some operations on a standalone Mongo instance and profiling them. We need to start a standalone server listening to any port for client connections; in this case, we will stick to the default 27017. If you are not aware of how to start a standalone server, refer to the Single node installation of MongoDB recipe in Chapter 1, Installing and Starting the MongoDB Server. We also need to start a shell that will be used to perform querying, enable profiling, and view the profiling operation.