创建缓存服务提供者

本节视频

创建缓存服务接口项目

创建一个名为 myshop-service-redis-api 项目,该项目只负责定义接口

POM

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <parent>
        <groupId>com.funtl</groupId>
        <artifactId>myshop-dependencies</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <relativePath>../myshop-dependencies/pom.xml</relativePath>
    </parent>

    <artifactId>myshop-service-redis-api</artifactId>
    <packaging>jar</packaging>

    <url>http://www.funtl.com</url>
    <inceptionYear>2018-Now</inceptionYear>
</project>
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RedisService

package com.funtl.myshop.service.redis.api;

public interface RedisService {
    /**
     * 设置缓存
     * @param key
     * @param value
     */
    void set(String key, Object value);

    /**
     * 设置缓存
     * @param key
     * @param value
     * @param seconds 缓存有效期
     */
    void set(String key, Object value, int seconds);

    /**
     * 获取缓存
     * @param key
     * @return
     */
    Object get(String key);

    /**
     * 删除缓存
     * @param key
     */
    void delete(String key);
}
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创建缓存服务提供者

创建一个名为 myshop-service-redis-provider 项目

POM

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <parent>
        <groupId>com.funtl</groupId>
        <artifactId>myshop-dependencies</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <relativePath>../myshop-dependencies/pom.xml</relativePath>
    </parent>

    <artifactId>myshop-service-redis-provider</artifactId>
    <packaging>jar</packaging>

    <url>http://www.funtl.com</url>
    <inceptionYear>2018-Now</inceptionYear>

    <dependencies>
        <!-- Spring Boot Starter Settings -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <!-- Commons Settings -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-pool2</artifactId>
        </dependency>
        <dependency>
            <groupId>de.javakaffee</groupId>
            <artifactId>kryo-serializers</artifactId>
        </dependency>

        <!-- Projects Settings -->
        <dependency>
            <groupId>com.funtl</groupId>
            <artifactId>myshop-commons-dubbo</artifactId>
            <version>${project.parent.version}</version>
        </dependency>
        <dependency>
            <groupId>com.funtl</groupId>
            <artifactId>myshop-service-redis-api</artifactId>
            <version>${project.parent.version}</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>com.funtl.myshop.service.redis.provider.MyShopServiceRedisProviderApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>
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主要增加了 org.springframework.boot:spring-boot-starter-data-redisorg.apache.commons:commons-pool2 两个依赖

Application

package com.funtl.myshop.service.redis.provider;

import com.alibaba.dubbo.container.Main;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.hystrix.EnableHystrix;
import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;

@EnableHystrix
@EnableHystrixDashboard
@SpringBootApplication
public class MyShopServiceRedisProviderApplication {
    public static void main(String[] args) {
        SpringApplication.run(MyShopServiceRedisProviderApplication.class, args);
        Main.main(args);
    }
}
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RedisServiceImpl

package com.funtl.myshop.service.redis.provider.api.impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.funtl.myshop.service.redis.api.RedisService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;

import java.util.concurrent.TimeUnit;

@Service(version = "${services.versions.redis.v1}")
public class RedisServiceImpl implements RedisService {

    @Autowired
    private RedisTemplate redisTemplate;

    @Override
    public void set(String key, Object value) {
        redisTemplate.opsForValue().set(key, value);
    }

    @Override
    public void set(String key, Object value, int seconds) {
        redisTemplate.opsForValue().set(key, value, seconds, TimeUnit.SECONDS);
    }

    @Override
    public Object get(String key) {
        return redisTemplate.opsForValue().get(key);
    }

    @Override
    public void delete(String key) {
        redisTemplate.delete(key);
    }
}
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application.yml

# Spring boot application
spring:
  application:
    name: myshop-service-redis-provider
  redis:
    lettuce:
      pool:
        max-active: 8
        max-idle: 8
        max-wait: -1ms
        min-idle: 0
    sentinel:
      master: mymaster
      nodes: 192.168.10.131:26379, 192.168.10.131:26380, 192.168.10.131:26381
server:
  port: 8503

# Services Versions
services:
  versions:
    redis:
      v1: 1.0.0

# Dubbo Config properties
dubbo:
  ## Base packages to scan Dubbo Component:@com.alibaba.dubbo.config.annotation.Service
  scan:
    basePackages: com.funtl.myshop.service.redis.provider.api.impl
  ## ApplicationConfig Bean
  application:
    id: myshop-service-redis-provider
    name: myshop-service-redis-provider
    qos-port: 22224
    qos-enable: true
  ## ProtocolConfig Bean
  protocol:
    id: dubbo
    name: dubbo
    port: 20883
    status: server
    serialization: kryo
  ## RegistryConfig Bean
  registry:
    id: zookeeper
    address: zookeeper://192.168.10.131:2181?backup=192.168.10.131:2182,192.168.10.131:2183

# Enables Dubbo All Endpoints
management:
  endpoint:
    dubbo:
      enabled: true
    dubbo-shutdown:
      enabled: true
    dubbo-configs:
      enabled: true
    dubbo-services:
      enabled: true
    dubbo-references:
      enabled: true
    dubbo-properties:
      enabled: true
  # Dubbo Health
  health:
    dubbo:
      status:
        ## StatusChecker Name defaults (default : "memory", "load" )
        defaults: memory
        ## StatusChecker Name extras (default : empty )
        extras: load,threadpool
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缓存服务消费者

在需要 Redis 服务的项目中增加 myshop-service-redis-api 依赖,直接远程调用即可

上次更新: 2018-12-31 18:51:48