通过Golang微服务开发可以解决哪些数据挑战？

package main

import (
    "fmt"
    "sync"
)

func main() {
    var wg sync.WaitGroup

    for i := 0; i < 10; i++ {
        wg.Add(1)
        go func() {
            defer wg.Done()
            fmt.Println("Concurrent processing")
        }()
    }

    wg.Wait()
    fmt.Println("All processing completed")
}

package main

import (
    "context"
    "fmt"
    "log"
    "time"

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

type User struct {
    ID       string    `bson:"_id"`
    Name     string    `bson:"name"`
    Email    string    `bson:"email"`
    CreateAt time.Time `bson:"create_at"`
}

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 func() {
        if err := client.Disconnect(ctx); err != nil {
            log.Fatal(err)
        }
    }()

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

    // Insert a user
    user := User{
        ID:       "1",
        Name:     "John Doe",
        Email:    "john@example.com",
        CreateAt: time.Now(),
    }

    _, err = collection.InsertOne(ctx, user)
    if err != nil {
        log.Fatal(err)
    }

    // Query users
    cursor, err := collection.Find(ctx, bson.M{})
    if err != nil {
        log.Fatal(err)
    }
    defer cursor.Close(ctx)

    for cursor.Next(ctx) {
        var user User
        err := cursor.Decode(&user)
        if err != nil {
            log.Fatal(err)
        }

        fmt.Println(user.Name)
    }
}

package main

import (
    "fmt"

    "github.com/segmentio/kafka-go"
)

func main() {
    topic := "my-topic"

    producer := kafka.NewWriter(kafka.WriterConfig{
        Brokers: []string{"localhost:9092"},
        Topic:   topic,
    })

    defer producer.Close()

    // Publish an event
    err := producer.WriteMessages([]kafka.Message{
        {
            Key:   []byte("key"),
            Value: []byte("value"),
        },
    })
    if err != nil {
        fmt.Println("Failed to publish event:", err)
        return
    }

    fmt.Println("Event published successfully")
}