内容简介：添加依赖
brew install redis redis-server
Redis在SpringBoot项目中的配置
添加依赖 spring-boot-starter-data-redis
即可
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
Java示例代码
package bj.redis;
import io.vavr.control.Try;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.context.event.ApplicationReadyEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.data.redis.core.StringRedisTemplate;
import javax.annotation.Resource;
import javax.validation.constraints.NotNull;
import java.util.concurrent.TimeUnit;
import java.util.function.Function;
/**
* Created by BaiJiFeiLong@gmail.com at 2018/12/13 上午9:51
*/
@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class})
public class RedisApp implements ApplicationListener<ApplicationReadyEvent> {
@Resource
private StringRedisTemplate stringRedisTemplate;
public static void main(String[] args) {
SpringApplication.run(RedisApp.class, args);
}
@Override
public void onApplicationEvent(@NotNull ApplicationReadyEvent event) {
Try.run(this::_onReady).getOrElseThrow((Function<Throwable, RuntimeException>) RuntimeException::new);
}
private void _onReady() throws InterruptedException {
stringRedisTemplate.opsForValue().set("GMail", "Google", 1, TimeUnit.SECONDS);
System.out.println("[After cached] GMail: " + stringRedisTemplate.opsForValue().get("GMail"));
Thread.sleep(1000);
System.out.println("[After timeout] GMail: " + stringRedisTemplate.opsForValue().get("GMail"));
}
}
控制台输出
. ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v2.1.0.RELEASE) 2018-12-13 10:15:58.921 INFO 44761 --- [ main] bj.redis.RedisApp : Starting RedisApp on MacBook-Air-2.local with PID 44761 (/Users/yuchao/temp/java/hellomaven/target/classes started by yuchao in /Users/yuchao/temp/java/hellomaven) 2018-12-13 10:15:58.936 INFO 44761 --- [ main] bj.redis.RedisApp : No active profile set, falling back to default profiles: default 2018-12-13 10:16:00.818 INFO 44761 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode! 2018-12-13 10:16:00.821 INFO 44761 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data repositories in DEFAULT mode. 2018-12-13 10:16:00.859 INFO 44761 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 17ms. Found 0 repository interfaces. 2018-12-13 10:16:02.564 INFO 44761 --- [ main] bj.redis.RedisApp : Started RedisApp in 4.561 seconds (JVM running for 6.042) 2018-12-13 10:16:02.692 INFO 44761 --- [ main] io.lettuce.core.EpollProvider : Starting without optional epoll library 2018-12-13 10:16:02.809 INFO 44761 --- [ main] io.lettuce.core.KqueueProvider : Starting with kqueue library [After cached] GMail: Google [After timeout] GMail: null
Redis与SpringCache
示例代码
package bj.redis;
import io.vavr.collection.HashMap;
import io.vavr.control.Try;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.context.event.ApplicationReadyEvent;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.ApplicationListener;
import org.springframework.context.annotation.Bean;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.stereotype.Component;
import javax.annotation.Resource;
import javax.validation.constraints.NotNull;
import java.time.Duration;
import java.util.concurrent.TimeUnit;
import java.util.function.Function;
/**
* Created by BaiJiFeiLong@Gmail.com at 2018/12/13 上午9:51
*/
@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class})
@EnableCaching
public class RedisApp implements ApplicationListener<ApplicationReadyEvent> {
public static void main(String[] args) {
SpringApplication.run(RedisApp.class, args);
}
@Override
public void onApplicationEvent(@NotNull ApplicationReadyEvent event) {
Try.run(this::_onReady).getOrElseThrow((Function<Throwable, RuntimeException>) RuntimeException::new);
}
@Resource
private StringRedisTemplate stringRedisTemplate;
@Resource
private Inner inner;
private void _onReady() throws InterruptedException {
stringRedisTemplate.opsForValue().set("a", "b");
System.out.println("TTL of a: " + stringRedisTemplate.getExpire("a", TimeUnit.MILLISECONDS));
System.out.println("[Before cache] Owner of Gmail: " + inner.owner("Gmail"));
System.out.println("[After cache] Owner of Gmail: " + inner.owner("Gmail"));
System.out.println("Expire millis: " + stringRedisTemplate.getExpire("alpha::owner::Gmail", TimeUnit.MILLISECONDS));
System.out.println("Keys: " + stringRedisTemplate.keys("*"));
Thread.sleep(100);
System.out.println("[After expire] Owner of Gmail: " + inner.owner("Gmail"));
System.out.println("Raw: " + stringRedisTemplate.opsForValue().get("alpha::owner::Gmail"));
}
@Component
static class Inner {
@Cacheable("alpha::owner")
public String owner(String product) {
System.out.println("Fetching...");
return HashMap.of("Gmail", "Google").getOrElse(product, null);
}
}
@Bean
public RedisCacheConfiguration redisCacheConfiguration() {
return RedisCacheConfiguration.defaultCacheConfig()
.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()))
.entryTtl(Duration.ofMillis(100));
}
}
控制台输出
. ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v2.1.0.RELEASE) 2018-12-13 11:48:16.788 INFO 45720 --- [ main] bj.redis.RedisApp : Starting RedisApp on MacBook-Air-2.local with PID 45720 (/Users/yuchao/temp/java/hellomaven/target/classes started by yuchao in /Users/yuchao/temp/java/hellomaven) 2018-12-13 11:48:16.810 INFO 45720 --- [ main] bj.redis.RedisApp : No active profile set, falling back to default profiles: default 2018-12-13 11:48:18.079 INFO 45720 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode! 2018-12-13 11:48:18.082 INFO 45720 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data repositories in DEFAULT mode. 2018-12-13 11:48:18.117 INFO 45720 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 16ms. Found 0 repository interfaces. 2018-12-13 11:48:19.243 INFO 45720 --- [ main] bj.redis.RedisApp : Started RedisApp in 3.305 seconds (JVM running for 4.684) 2018-12-13 11:48:19.484 INFO 45720 --- [ main] io.lettuce.core.EpollProvider : Starting without optional epoll library 2018-12-13 11:48:19.512 INFO 45720 --- [ main] io.lettuce.core.KqueueProvider : Starting with kqueue library TTL of a: -1 Fetching... [Before cache] Owner of Gmail: Google [After cache] Owner of Gmail: Google Expire millis: 54 Keys: [a, alpha::owner::Gmail] Fetching... [After expire] Owner of Gmail: Google Raw: "Google"
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