Category: Spring Boot backend development

In the modern software development environment, backend developers play a very important and essential role. In particular, Spring Boot is a powerful Java-based framework that provides numerous features to simplify application development and enhance productivity. This course will cover the fundamentals to advanced topics of backend development using Spring Boot and will also discuss the tasks and roles of a backend developer.

1. What is Backend Development?

Backend development deals with the server side of web applications. It involves processing the information requested by the client, interacting with the database, and delivering responses back to the client. Backend developers typically handle the following tasks:

• Implementing server logic
• Designing and managing databases
• Designing and developing APIs
• Optimizing server and application performance
• Ensuring security and data protection

2. What is Spring Boot?

Spring Boot is a lightweight development framework based on the Spring Framework, which helps simplify the configuration and deployment of applications. It minimizes the complex settings of the Spring Framework and provides an embedded server, allowing developers to develop applications more quickly.

The main features of Spring Boot include:

• Automatic Configuration: When the required libraries are set, Spring Boot automatically configures the settings.
• Standalone Applications: With an embedded server, applications can run without separate server installation.
• Starter POM: Provides pre-defined starter POMs to easily use various libraries.
• Production-ready Features: Includes various features for monitoring, deploying, and securing applications.

3. Spring Boot Environment Setup

To use Spring Boot, you must first set up the development environment. You can set it up by following these steps:

1. Install Java: Since Spring Boot is based on Java, you need to install the Java Development Kit (JDK).
2. Select IDE: Choose and install an IDE that supports Java development, such as IntelliJ IDEA or Eclipse.
3. Spring Boot Initialization: Visit the Spring Boot initialization site (https://start.spring.io/) to create a basic project.

4. Structure of a Spring Boot Application

A Spring Boot application consists of various components. It generally follows the following package structure:

• Controller: A controller class that processes user requests and returns responses.
• Service: A service class that handles business logic.
• Repository: A repository class responsible for interacting with the database.
• Model: A model class that defines data structures.

5. API Development

One of the major tasks of backend development is to develop APIs (Application Programming Interfaces). Spring Boot provides a structure to easily create RESTful APIs. To design and develop an API, follow these steps:

1. Create Controller Class: Create a controller class that will handle HTTP requests.
2. Request Mapping (@RequestMapping): Map URLs and HTTP methods to handle requests.
3. Return ResponseEntity Object: Use ResponseEntity to set status codes and return necessary data while handling responses for the client.

6. Database Integration

To store and retrieve data in a backend application, you need to connect to a database. Spring Boot uses Spring Data JPA to efficiently handle interactions with the database. The process of database integration is as follows:

1. Add Dependencies: Add Spring Data JPA and database dependencies to the build.gradle or pom.xml file.
2. Create Entity Class: Create an Entity class that maps to the database table.
3. Write Repository Interface: Write a repository interface that inherits from Spring Data JPA’s JpaRepository.
4. Process Data in Service Class: Implement a service that interacts with the database through the repository.

7. Security Configuration

Application security is very important. Spring Boot allows for easy implementation of authentication and authorization using Spring Security. The basic security setup process is as follows:

1. Add Spring Security Dependency: Add Spring Security dependency to the build.gradle or pom.xml file.
2. Create WebSecurityConfigurerAdapter Class: Create a custom security configuration class to set the necessary security rules.
3. Implement User Authentication and Authorization: Store user information (e.g., username, password) in the database and implement user authentication and authorization.

8. Tasks of a Backend Developer

Backend developers are required to have various technical skills, and teamwork and communication skills are also very important. Generally, backend developers perform the following tasks:

• Design and Architecture: Design an effective architecture considering the overall structure of the system.
• Code Implementation: Write code according to requirements and improve existing code.
• Database Design: Define data models and design the database to efficiently store application data.
• Bug Fixing: Analyze and fix bugs that occur in the application.
• Documentation: Write technical documents for the system and APIs to share information with team members and subsequent developers.
• Optimization: Monitor and optimize application performance to maintain high availability and responsiveness.

9. Experience in Real Projects

While learning theory is important, gaining experience through actual projects is even more crucial. By participating in various real projects, you can understand the actual backend development environment and workflow, and learn how to collaborate with a team. Gaining real-world experience allows you to acquire skills such as:

• Using project management tools (e.g., Jira, Trello)
• Receiving code reviews and feedback
• Understanding Agile or Scrum methodologies
• Understanding DevOps and CI/CD (Continuous Integration, Continuous Deployment)

10. Conclusion

Backend development using Spring Boot plays a very important role in modern software development. Through this course, you will learn the basic concepts of backend development and how to utilize Spring Boot, as well as have opportunities to apply your knowledge in real projects. In this process, you will be able to grow into a proficient backend developer.

I hope this course has been helpful, and if you have any additional questions or concerns, please leave a comment. Thank you!

Spring Boot is a Java-based framework that helps developers easily create web applications and microservices. In this course, we will explore the core elements of Spring Boot and carry out actual projects using various libraries and frameworks.

1. Overview of Spring Boot

Spring Boot is a conceptual extension of the Spring framework, designed to minimize application configuration and provide various configuration options to start projects easily. The main features of Spring Boot are:

• Auto Configuration: Spring Boot automatically configures settings that are generally required.
• Embedded Server: Servers like Tomcat and Jetty are embedded, so no separate server environment setup is necessary.
• Starter Packages: Provides bundled libraries needed for specific functionalities, making integration easy.

2. Spring Boot Architecture

Spring Boot consists of various components and is designed following the MVC (Model-View-Controller) pattern. The main architectural components are:

• Controller: Handles HTTP requests and calls related services to return results.
• Service: Implements business logic and handles interactions with the database.
• Repository: Responsible for CRUD operations with the database.

3. Installing and Setting Up Spring Boot

To use Spring Boot, you need to install JDK and either Maven or Gradle. Follow the steps below to install:

1. Install JDK: Install Oracle JDK or OpenJDK.
2. Install Maven/Gradle: Choose Maven or Gradle for managing Spring Boot projects and proceed with installation.

4. Creating a Spring Boot Project

You can create a new project through the Spring Initializer website (start.spring.io). Select the necessary dependencies and enter project metadata to download it.

4.1 Setting Up a Gradle-Based Project

plugins {
    id 'org.springframework.boot' version '2.5.6'
    id 'io.spring.dependency-management' version '1.0.11.RELEASE'
    id 'java'
}

group = 'com.example'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '11'

repositories {
    mavenCentral()
}

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter'
    testImplementation 'org.springframework.boot:spring-boot-starter-test'
}

5. Key Libraries of Spring Boot

Spring Boot provides several libraries as defaults. The most commonly used libraries are:

5.1 Spring Web

An essential component for creating RESTful web services or developing web applications based on the MVC architecture.

5.2 Spring Data JPA

A library that simplifies interactions with the database using JPA (Java Persistence API), enabling object-oriented management of the database.

5.3 Spring Security

A library used to add security to applications, helping to easily implement authentication and authorization.

5.4 Spring Boot Actuator

A library that provides application status and management information, facilitating application monitoring and management in production environments.

6. Developing RESTful APIs

Let’s learn how to develop RESTful APIs using Spring Boot. REST APIs offer methodologies to design interactions between clients and servers.

6.1 Adding Dependencies

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-web'
}

6.2 Creating a Controller

Below is an example of a simple REST API controller:

import org.springframework.web.bind.annotation.*;

@RestController
@RequestMapping("/api")
public class MyController {

    @GetMapping("/hello")
    public String hello() {
        return "Hello, World!";
    }
}

6.3 Method Description

In the code above, @RestController indicates that this class is a REST API controller, while @GetMapping defines a method that handles HTTP GET requests. @RequestMapping sets the base URL path.

7. Integrating with a Database

This section introduces how to integrate Spring Boot with a database. Commonly used databases include MySQL and PostgreSQL, and database interactions are managed through JPA.

7.1 Database Configuration

Set the database connection information in the application.properties file:

spring.datasource.url=jdbc:mysql://localhost:3306/mydb
spring.datasource.username=root
spring.datasource.password=password
spring.jpa.hibernate.ddl-auto=update

7.2 Creating an Entity

Create an entity class that maps to a database table. Below is an example of a simple user entity:

import javax.persistence.*;

@Entity
public class User {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;

    private String name;
    
    private String email;

    // Getters and Setters
}

7.3 Creating a Repository Interface

Create a repository interface for interacting with the database:

import org.springframework.data.jpa.repository.JpaRepository;

public interface UserRepository extends JpaRepository<User, Long> {
}

8. Implementing the Service Layer

Implement a service layer that handles business logic to increase code reusability and meet business requirements.

8.1 Creating a Service Class

The service class can be implemented as follows:

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;

@Service
public class UserService {

    @Autowired
    private UserRepository userRepository;

    public List<User> getAllUsers() {
        return userRepository.findAll();
    }
}

9. Applying Spring Security

To add security to the application, configure Spring Security. This allows you to implement user authentication and authorization features.

9.1 Adding Dependencies

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-security'
}

9.2 Configuring Security

Create a SecurityConfig class to configure Spring Security:

import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .authorizeRequests()
            .anyRequest().authenticated()
            .and()
            .httpBasic();
    }
}

10. Testing and Deployment

Once all functionalities are implemented, write unit tests and integration tests to verify that they work correctly. Then, you can deploy the application using Docker and Kubernetes.

10.1 Unit Testing

import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
class MyApplicationTests {

    @Test
    void contextLoads() {
    }
}

11. Conclusion

Spring Boot is a very useful framework for modern web application development. We hope this course has laid the foundation for you to develop robust and maintainable web applications using the various features and libraries of Spring Boot.

12. References

• Official Spring Boot Website
• Official Spring Boot Documentation
• Baeldung Spring Boot Tutorial

Spring Boot is a powerful and flexible web application framework written in the Java programming language. It is particularly optimized for backend development, helping developers quickly and easily build RESTful APIs or web applications. In this course, we will explore Spring Boot and its related libraries in depth.

1. Introduction to Spring Boot

Spring Boot is an extension of the Spring Framework, providing a tool to create stand-alone applications with minimal configuration. The main features of Spring Boot are as follows:

• Easy Configuration: It minimizes XML configuration files and transitions to Java-based configuration, enhancing code readability and maintainability.
• Application Independence: It allows applications to run using an embedded web server (e.g., Tomcat) without requiring separate server installation.
• Automatic Configuration: It automatically finds configurations suited to the environment, saving developers a lot of time.
• Extensive Community: Spring is a globally popular framework with a strong community and documentation.

2. Core Components of Spring Boot

Spring Boot has various components, each performing specific functions, contributing together to build powerful backend applications. Here, we will introduce some key components.

2.1. Spring MVC

Spring MVC (Model-View-Controller) is a pattern for web controllers that handles requests and assembles models and views to generate responses. Spring Boot’s MVC is very useful for creating REST APIs.

@RestController
@RequestMapping("/api/hello")
public class HelloController {
    @GetMapping
    public String sayHello() {
        return "Hello, Spring Boot!";
    }
}

2.2. Spring Data JPA

Spring Data JPA is a library that makes data access easier. It is an implementation of JPA (Java Persistence API) that simplifies interactions with the database. Using this feature allows database operations to be performed without writing complex SQL queries.

2.3. Spring Security

Spring Security is a library for securing applications. It controls user access through Authentication and Authorization, helping build secure applications through basic security configurations.

3. What is a Library?

In programming, a library refers to a pre-written set of code that developers can reuse. Generally, it consists of code, modules, and functions that perform specific functions, allowing developers to refer to this library for efficient work. In the case of Spring Boot, rapid development is possible through various libraries.

3.1. Features of Libraries

• Reusability: Code written once can be reused across multiple projects.
• Increased Productivity: Existing libraries can be used without the need to implement complex features from scratch.
• Ease of Maintenance: When a library is updated, the applications using it can also easily switch to the latest version.
• Community Support: Open-source libraries typically have active communities that assist in problem-solving.

3.2. Key Libraries in Spring Boot

Spring Boot utilizes several libraries to provide various functionalities. Here, we introduce a few key libraries.

• Spring Web: A library for web application development, including MVC and REST support features.
• Spring Boot Starter Data JPA: A library that helps easily use JPA.
• Spring Boot Starter Security: It includes essential libraries for security.
• Spring Boot Starter Thymeleaf: It is used to create dynamic web pages using the server-side template engine Thymeleaf.

4. Using Spring Boot Libraries

Now, let’s learn how to use libraries in Spring Boot. In Spring Boot, libraries can be added using build tools like Maven or Gradle.

4.1. Adding Libraries with Maven

When using Maven, dependencies must be added to the pom.xml file. Below is an example of adding JPA and Web Starter:

    
        org.springframework.boot
        spring-boot-starter-data-jpa
    
    
        org.springframework.boot
        spring-boot-starter-web
    

4.2. Adding Libraries with Gradle

When using Gradle, dependencies are added to the build.gradle file:

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
    implementation 'org.springframework.boot:spring-boot-starter-web'
}

5. Building a Spring Boot Backend Application

Let’s explore how to build a simple backend application using Spring Boot. As an example, we will create a RESTful API. The following outlines the basic process.

5.1. Environment Setup

First, create a new Spring Boot project in your IDE (e.g., IntelliJ IDEA). Select the basic dependencies for web and JPA.

5.2. Creating an Entity Class

Create an Entity class mapped to the database:

@Entity
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    private String name;
    private String email;

    // getters and setters
}

5.3. Writing a Repository Interface

Write a Repository interface that automatically provides CRUD functionalities through Spring Data JPA:

public interface UserRepository extends JpaRepository {
}

5.4. Writing a Service Class

Write a service class that performs business logic:

@Service
public class UserService {

    @Autowired
    private UserRepository userRepository;

    public List getAllUsers() {
        return userRepository.findAll();
    }

    public User createUser(User user) {
        return userRepository.save(user);
    }
}

5.5. Writing a Controller Class

Write a REST API controller that handles HTTP requests:

@RestController
@RequestMapping("/api/users")
public class UserController {

    @Autowired
    private UserService userService;

    @GetMapping
    public List getAllUsers() {
        return userService.getAllUsers();
    }

    @PostMapping
    public User createUser(@RequestBody User user) {
        return userService.createUser(user);
    }
}

6. Advantages of Spring Boot

There are several advantages to using Spring Boot. It contributes to increased development efficiency, improved maintainability, and overall enhanced code quality.

6.1. Rapid Development

Through automatic configuration and minimal setup, development can proceed quickly. You can choose to use only the necessary features, avoiding unnecessary code writing.

6.2. Community-Based Support

As Spring Boot is used by many developers worldwide, there are various resources and examples available to help resolve issues. Information can be easily found through blogs, forums, and official documentation.

7. Conclusion

In this course, we explored Spring Boot and its libraries in detail. Utilizing Spring Boot provides the advantage of easily building powerful backend systems. We hope you will continue to add various features using Spring Boot and develop more advanced applications.

Thank you!

Spring Boot is a framework that makes it easy to develop modern web applications and is widely used for backend development. In this course, we will explore various aspects of the relationship between Spring Boot and databases, methods of communication with databases, entities, repositories, transaction management, and more.

1. Spring Boot and Databases

Spring Boot is a Java-based framework that provides various features to efficiently handle communication with databases. It supports both relational databases (RDBMS) and non-relational databases (NoSQL), minimizing the complex configuration required for database integration.

1.1 Database Connection

Spring Boot uses the application.properties or application.yml file to configure database connections. You can set the database URL, username, password, and more.

spring.datasource.url=jdbc:mysql://localhost:3306/mydb
spring.datasource.username=myuser
spring.datasource.password=mypassword
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver

1.2 JPA and Hibernate

Spring Boot supports JPA (Java Persistence API) and uses Hibernate as the default JPA implementation. JPA is an API for mapping Java objects to databases, helping you carry out database operations without writing SQL queries.

2. Database Modeling

Designing the database structure for the application is very important. Database modeling includes the following processes.

2.1 Setting Up Entities and Relationships

Each table is modeled as an entity class. For example, let’s assume we have user and order entities.

@Entity
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    private String name;
    private String email;

    // Getters and Setters
}

@Entity
public class Order {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @ManyToOne
    @JoinColumn(name = "user_id")
    private User user;

    private String product;
    private Double price;

    // Getters and Setters
}

2.2 Database Migration

In Spring Boot, migration tools like Flyway or Liquibase can be used to automatically manage changes in the database schema. This allows for versioning of database changes.

3. Implementing CRUD Operations

The most basic operations when interacting with a database are CRUD (Create, Read, Update, Delete). The repository pattern is used to implement this.

3.1 User Repository

public interface UserRepository extends JpaRepository {
    List findByName(String name);
}

3.2 Service Layer

Write a service class that handles business logic.

@Service
public class UserService {
    @Autowired
    private UserRepository userRepository;

    public User createUser(User user) {
        return userRepository.save(user);
    }

    public List getAllUsers() {
        return userRepository.findAll();
    }

    // Update and Delete methods
}

3.3 Controller

Implement a REST controller to handle HTTP requests.

@RestController
@RequestMapping("/users")
public class UserController {
    @Autowired
    private UserService userService;

    @PostMapping
    public ResponseEntity createUser(@RequestBody User user) {
        return ResponseEntity.ok(userService.createUser(user));
    }

    @GetMapping
    public List getAllUsers() {
        return userService.getAllUsers();
    }

    // Update and Delete endpoints
}

4. Transaction Management

Spring Boot makes it easy to manage transactions using the @Transactional annotation. A transaction is a unit of work that must either complete successfully or fail as a whole when performing a series of operations on the database.

@Service
public class OrderService {
    @Autowired
    private OrderRepository orderRepository;

    @Autowired
    private UserRepository userRepository;

    @Transactional
    public void createOrder(Order order, Long userId) {
        User user = userRepository.findById(userId)
                .orElseThrow(() -> new RuntimeException("User not found"));
        order.setUser(user);
        orderRepository.save(order);
    }
}

5. Error Handling with Databases

It is very important to handle various errors that may occur during communication with the database. For instance, appropriate exception handling is needed when the database is down or when there are errors in the query.

5.1 Custom Exception Class

public class ResourceNotFoundException extends RuntimeException {
    public ResourceNotFoundException(String message) {
        super(message);
    }
}

5.2 Global Exception Handling

@ControllerAdvice
public class GlobalExceptionHandler {
    @ExceptionHandler(ResourceNotFoundException.class)
    public ResponseEntity handleNotFound(ResourceNotFoundException ex) {
        return ResponseEntity.status(HttpStatus.NOT_FOUND).body(ex.getMessage());
    }
}

6. Testing and Deployment

Finally, testing is essential to safely deploy the developed application. In Spring Boot, you can perform unit tests and integration tests using JUnit and Mockito.

6.1 Unit Testing

@SpringBootTest
public class UserServiceTests {
    @Autowired
    private UserService userService;

    @MockBean
    private UserRepository userRepository;

    @Test
    public void testCreateUser() {
        User user = new User();
        user.setName("Test User");
        user.setEmail("test@example.com");

        Mockito.when(userRepository.save(user)).thenReturn(user);
        User createdUser = userService.createUser(user);

        assertEquals("Test User", createdUser.getName());
    }
}

6.2 Deployment

Spring Boot projects can be easily packaged as jar files and deployed to cloud environments such as AWS, Azure, and Google Cloud.

Conclusion

Through this course, we covered comprehensive topics regarding backend development using Spring Boot and its connection to databases. I hope you now understand the fundamental concepts of database integration utilizing Spring Boot, from implementing CRUD operations, transaction management, error handling, testing to deployment. Based on this content, try applying Spring Boot to your projects!

In modern application development, databases have become a core element. Spring Boot is a Java-based web application framework that is widely used, especially in backend development. This course will cover the basics to advanced concepts of backend development and database management systems (DBMS) using Spring Boot. This article will provide in-depth understanding of Spring Boot and DBMS, containing over 20,000 characters.

1. What is Spring Boot?

Spring Boot is an extension of the Spring framework, providing tools to simplify setup and configuration to enable rapid application development. Spring Boot is primarily used for developing RESTful APIs, microservice architectures, and web applications.

1.1 Key Features of Spring Boot

• Auto-Configuration: Minimizes the amount of configuration required by developers, thus increasing productivity.
• Starters: Modules that allow easy access to various libraries.
• Standalone Application: Thanks to built-in servers (e.g., Tomcat, Jetty), applications can run without additional configuration.

2. Introduction to Databases and DBMS

A database is a system for storing, managing, and retrieving information, whereas a DBMS (Database Management System) is software that allows for efficient management of databases. A DBMS helps users easily store and retrieve data while maintaining data consistency and integrity.

2.1 Types of DBMS

DBMS can be broadly categorized into relational databases (e.g., MySQL, PostgreSQL) and non-relational databases (e.g., MongoDB, Cassandra).

• Relational Database (RDBMS): Stores data in tables and manipulates it using SQL.
• Non-Relational Database (NoSQL): Stores data in JSON format with a flexible schema.

2.2 Principles of Database Design

To design an efficient database, several principles need to be considered.

1. Normalization: Store data without redundancy, but use appropriate joins to query data when necessary.
2. Integrity Constraints: Rules to maintain the accuracy and consistency of data.
3. Index: Set indexes on frequently used columns to enhance search performance.

3. Integrating Spring Boot with Database

Using Spring Boot, it is easy to connect to databases. This section will explain the necessary configurations and code to connect to a database.

3.1 Project Setup

To create a Spring Boot project, visit Spring Initializr and add the required dependencies.

• Spring Web: Required for developing RESTful APIs.
• Spring Data JPA: An ORM (Object Relational Mapping) technology that simplifies the mapping between databases and objects.
• H2 Database: An in-memory database used for development and testing.

3.2 application.properties Configuration

spring.h2.console.enabled=true
spring.datasource.url=jdbc:h2:mem:testdb
spring.datasource.driver-class-name=org.h2.Driver
spring.datasource.username=sa
spring.datasource.password=password
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect

3.3 Creating Entity Classes

Next, create Entity classes that map to database tables. Here we’ll use a simple User class as an example.

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

@Entity
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String name;
    private String email;

    // Getter and Setter methods
}

3.4 Creating Repository Interfaces

Using Spring Data JPA, create repository interfaces to interact with the database.

import org.springframework.data.jpa.repository.JpaRepository;

public interface UserRepository extends JpaRepository<User, Long> {
    User findByEmail(String email);
}

3.5 Implementing Services and Controllers

Implement service layers and controllers that provide RESTful APIs. The service layer processes business logic, while the controller layer handles HTTP requests.

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@RequestMapping("/api/users")
public class UserController {
    @Autowired
    private UserService userService;

    @GetMapping
    public List<User> getAllUsers() {
        return userService.getAllUsers();
    }

    @PostMapping
    public User createUser(@RequestBody User user) {
        return userService.createUser(user);
    }
}

4. Database Management

Database management includes data backup, recovery, performance monitoring, and security settings. Various tools and techniques are required to efficiently perform these tasks.

4.1 Data Backup and Recovery

Regular data backups are a crucial process to prevent data loss. Each RDBMS offers various methods for data backup.

• mysqldump: A command that performs backup of MySQL databases.

mysqldump -u [username] -p[password] [database] > backup.sql

4.2 Performance Monitoring

Various tools exist to monitor the performance of databases. They allow real-time checking of query performance, CPU usage, memory usage, and more.

• MySQL Workbench: A tool for monitoring the performance of MySQL and analyzing queries.

4.3 Security Settings

Database security is very important. User access permissions should be set, and secure passwords must be used to protect databases.

5. Conclusion

In this course, we covered backend development using Spring Boot and the basics to practical applications of DBMS. Spring Boot allows for a user-friendly way to integrate with databases, making web application development easier. Database management is also a crucial aspect, and it is necessary to use various techniques and tools to perform this efficiently. We hope you continue your journey toward more advanced backend development.