Best practice cases for interaction between golang framework and database

Best practices for interacting with databases in the Golang framework include: Using the ORM framework Prepared statements and bound parameters Connection pooling Transaction handling Error handling These best practices ensure the efficiency, reliability, and scalability of your application.

Best practice cases for interaction between Golang framework and database

In Golang-based applications, interacting with database is a crucial aspect. Following best practices ensures your application is efficient, reliable, and scalable. This article will discuss the best practices for interacting with databases in the Golang framework and provide practical examples.

1. Use the ORM (Object-Relational Mapping) framework

The ORM framework builds a bridge between Golang objects and databases, allowing developers to Perform CRUD (create, read, update, delete) operations. Commonly used ORM frameworks include GORM and xorm.

2. Prepared statements and bound parameters

Using prepared statements and bound parameters can prevent SQL injection attacks and improve performance. Prepared statements pre-compile the SQL query, while bound parameters ensure that the values ​​used in the query are not affected by the query string.

3. Connection pool

Using a connection pool can avoid establishing a new connection every time you interact with the database. Golang's built-in database/sql package provides connection pooling functionality.

4. Transaction processing

Transaction processing ensures that multiple operations either all succeed or all fail. Transactions can be managed using the BEGIN, COMMIT, and ROLLBACK statements.

5. Error handling

Comprehensively consider the error handling mechanism, including handling SQL errors, database connection errors, etc.

Practical case

Use GORM to set up a database connection:

import (
    "fmt"

    "github.com/jinzhu/gorm"
)

func main() {
    dsn := "user:password@tcp(127.0.0.1:3306)/database"
    db, err := gorm.Open("mysql", dsn)
    if err != nil {
        fmt.Println(err)
    }
    defer db.Close()
}

Use prepared statements and bound parameters :

import (
    "database/sql"
    "fmt"
)

func main() {
    db, err := sql.Open("mysql", "user:password@tcp(127.0.0.1:3306)/database")
    if err != nil {
        fmt.Println(err)
    }
    defer db.Close()

    stmt, err := db.Prepare("SELECT * FROM users WHERE name = ?")
    if err != nil {
        fmt.Println(err)
    }
    defer stmt.Close()

    rows, err := stmt.Query("John")
    if err != nil {
        fmt.Println(err)
    }
    defer rows.Close()
}

Using transaction processing:

import (
    "database/sql"
    "fmt"
)

func main() {
    db, err := sql.Open("mysql", "user:password@tcp(127.0.0.1:3306)/database")
    if err != nil {
        fmt.Println(err)
    }
    defer db.Close()

    tx, err := db.Begin()
    if err != nil {
        fmt.Println(err)
    }

    _, err = tx.Exec("INSERT INTO users (name) VALUES (?)", "John")
    if err != nil {
        tx.Rollback()
        fmt.Println(err)
    }

    tx.Commit()
}

By following these best practices, you can use the Golang framework to interact with your database efficiently and securely.

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