How to Perform CRUD Operations with MongoDB in Go

Use the official MongoDB Go driver to connect to your database and execute CRUD operations via the Collection object.

package main

import (
	"context"
	"log"
	"time"

	"go.mongodb.org/mongo-driver/mongo"
	"go.mongodb.org/mongo-driver/mongo/options"
	"go.mongodb.org/mongo-driver/bson"
)

func main() {
	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()

	client, err := mongo.Connect(ctx, options.Client().ApplyURI("mongodb://localhost:27017"))
	if err != nil {
		log.Fatal(err)
	}
	defer client.Disconnect(ctx)

	collection := client.Database("mydb").Collection("users")

	// Create
	_, err = collection.InsertOne(ctx, bson.D{{"name", "Alice"}, {"age", 30}})
	if err != nil {
		log.Fatal(err)
	}

	// Read
	var result bson.M
	err = collection.FindOne(ctx, bson.D{{"name", "Alice"}}).Decode(&result)
	if err != nil {
		log.Fatal(err)
	}

	// Update
	_, err = collection.UpdateOne(ctx, bson.D{{"name", "Alice"}}, bson.D{{"$set", bson.D{{"age", 31}}}})
	if err != nil {
		log.Fatal(err)
	}

	// Delete
	_, err = collection.DeleteOne(ctx, bson.D{{"name", "Alice"}})
	if err != nil {
		log.Fatal(err)
	}
}

Performing CRUD operations with MongoDB in Go lets you save, find, change, and remove data. Think of it like managing a digital filing cabinet where you can add new folders, look up specific files, update their contents, or throw them away entirely.