How springboot uses Redis for caching

1. Dependencies and database settings

<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-redis</artifactId>
		</dependency>
		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-pool2</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.session</groupId>
			<artifactId>spring-session-data-redis</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>

spring.redis.database=0  

spring.redis.host=localhost

spring.redis.port=6379  

spring.redis.password=123 #自己的密码

spring.redis.lettuce.pool.max-active=8

spring.redis.lettuce.pool.max-wait=-1

spring.redis.lettuce.pool.max-idle=8

spring.redis.lettuce.pool.min-idle=0

2.redis and session configuration

@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport{
	
	@Bean
	public KeyGenerator keyGenerator() {
        return new KeyGenerator() {
            @Override
            public Object generate(Object target, Method method, Object... params) {
                StringBuilder sb = new StringBuilder();
                sb.append(target.getClass().getName());
                sb.append(method.getName());
                for (Object obj : params) {
                    sb.append(obj.toString());
                }
                return sb.toString();
            }
        };
    }
}

@Configuration
@EnableRedisHttpSession(maxInactiveIntervalInSeconds = 86400*30)
public class SessionConfig {
}

3. Entity and controller layer

public class User implements Serializable {

	private static final long serialVersionUID = 1L;
	private Long id;
	private String userName;
	private String password;
	private String email;
	private String nickname;
	private String regTime;

	public User() {
		super();
	}
	public User(String email, String nickname, String password, String userName, String regTime) {
		super();
		this.email = email;
		this.nickname = nickname;
		this.password = password;
		this.userName = userName;
		this.regTime = regTime;
	}

	public Long getId() {
		return id;
	}

	public void setId(Long id) {
		this.id = id;
	}

	public String getUserName() {
		return userName;
	}

	public void setUserName(String userName) {
		this.userName = userName;
	}

	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}

	public String getEmail() {
		return email;
	}

	public void setEmail(String email) {
		this.email = email;
	}

	public String getNickname() {
		return nickname;
	}

	public void setNickname(String nickname) {
		this.nickname = nickname;
	}

	public String getRegTime() {
		return regTime;
	}

	public void setRegTime(String regTime) {
		this.regTime = regTime;
	}

	@Override
	public String toString() {
		return "User{" +
				"id=" + id +
				", userName="" + userName + """ +
				", password="" + password + """ +
				", email="" + email + """ +
				", nickname="" + nickname + """ +
				", regTime="" + regTime + """ +
				"}";
	}
}

@RestController
public class UserController {

    @RequestMapping("/getUser")
    @Cacheable(value="user-key")
    public User getUser() {
        User user=new User("aa@126.com", "aa", "aa123456", "aa","123");
        System.out.println("测试缓存");
        return user;
    }


    @RequestMapping("/uid")
    String uid(HttpSession session) {
        UUID uid = (UUID) session.getAttribute("uid");
        if (uid == null) {
            uid = UUID.randomUUID();
        }
        session.setAttribute("uid", uid);
        return session.getId();
    }
}

4.Run

@SpringBootApplication
public class RedisApplication {

	public static void main(String[] args) {
		SpringApplication.run(RedisApplication.class, args);
	}
}

Running results:

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