Let’s see how you can use it: if err := client.Ping(context.TODO(), readpref. The MongoDB client provides a Ping() method to tell you if a MongoDB database has been found and connected. The mongo.Connect documentation contains more advanced configurations for creating a MongoDB client instance, including authentication. If the err value is not empty, it means there was an error (wrong credentials or connecting to a non-existent database), and you should terminate the application using panic(). Any time you make requests to a server (the database, in this case), you should create a context using context.TODO() that the server will accept.įinally, you checked errors in the database connection using the err variable returned from calling mongo.Connect(). Then, you created a client instance using the mongo.Connect() function and passed a Go context to it. Here, you imported the mongo, mongo/options, and mongo/readpref modules from the Go driver into your application to connect to the local database. "go./mongo-driver/mongo/readpref"Ĭlient, err := mongo.Connect(context.TODO(), options.Client().ApplyURI("mongodb://localhost:27017")) Import the Go driver package into your application, then create a MongoDB client instance for a database on port 27017 (MongoDB’s default port).Ĭreate a file named main.go and save the following code in it: package main In the terminal, type the following: go get go./mongo-driver/mongo Install the MongoDB Go driver package in your project. You are free to use any name for your package: go mod init mongo-with-golang Set up your development environmentĬreate a new Go project in your text editor or IDE and initialize your go.mod file. It provides functionalities that allow a Go application to connect to a MongoDB database and execute queries. The first step is to install the MongoDB Go driver, the official Go driver for MongoDB.
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