springboot集成本地缓存Caffeine的三种使用方式(小结)
短信预约 -IT技能 免费直播动态提醒
第一种方式（只使用Caffeine）
gradle添加依赖
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-jdbc'
implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
implementation 'org.springframework.boot:spring-boot-starter-web'
implementation 'org.mybatis.spring.boot:mybatis-spring-boot-starter:2.1.3'
runtimeOnly 'mysql:mysql-connector-java'
compileOnly 'org.projectlombok:lombok'
annotationProcessor 'org.projectlombok:lombok'
testImplementation('org.springframework.boot:spring-boot-starter-test') {
exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
}
compile group: 'com.github.ben-manes.caffeine', name: 'caffeine', version: '2.8.4'
// compile('org.springframework.boot:spring-boot-starter-cache')
}
编写配置类
package org.example.base.config;
import com.github.benmanes.caffeine.cache.Cache;
import com.github.benmanes.caffeine.cache.Caffeine;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import java.util.concurrent.TimeUnit;
@Configuration
//@EnableCaching
public class CacheConfig {
@Bean(value = "caffeineCache")
public Cache<String, Object> caffeineCache() {
return Caffeine.newBuilder()
// 设置最后一次写入或访问后经过固定时间过期
.expireAfterWrite(60, TimeUnit.SECONDS)
// 初始的缓存空间大小
.initialCapacity(1000)
// 缓存的最大条数
.maximumSize(10000)
.build();
}
@Bean(value = "caffeineCache2")
public Cache<String, Object> caffeineCache2() {
return Caffeine.newBuilder()
// 设置最后一次写入或访问后经过固定时间过期
.expireAfterWrite(120, TimeUnit.SECONDS)
// 初始的缓存空间大小
.initialCapacity(1000)
// 缓存的最大条数
.maximumSize(10000)
.build();
}
}
测试
package org.example.base;
import com.github.benmanes.caffeine.cache.Cache;
import org.example.base.bean.User;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.test.context.SpringBootTest;
@SpringBootTest
class BaseApplicationTests {
@Qualifier("caffeineCache")
@Autowired
Cache<String, Object> cache;
@Qualifier("caffeineCache2")
@Autowired
Cache<String, Object> cache2;
@Test
public void test() {
User user = new User(1, "张三", 18);
cache.put("123", user);
User user1 = (User) cache.getIfPresent("123");
assert user1 != null;
System.out.println(user1.toString());
User user2 = (User) cache2.getIfPresent("1234");
System.out.println(user2 == null);
}
}输出
第二种方式(使用Caffeine和spring cache)
gradle添加依赖
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-jdbc'
implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
implementation 'org.springframework.boot:spring-boot-starter-web'
implementation 'org.mybatis.spring.boot:mybatis-spring-boot-starter:2.1.3'
runtimeOnly 'mysql:mysql-connector-java'
compileOnly 'org.projectlombok:lombok'
annotationProcessor 'org.projectlombok:lombok'
testImplementation('org.springframework.boot:spring-boot-starter-test') {
exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
}
compile group: 'com.github.ben-manes.caffeine', name: 'caffeine', version: '2.8.4'
compile('org.springframework.boot:spring-boot-starter-cache')
}
编写配置类
package org.example.base.config;
import com.github.benmanes.caffeine.cache.Caffeine;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.caffeine.CaffeineCache;
import org.springframework.cache.support.SimpleCacheManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import java.time.Duration;
import java.util.ArrayList;
@Configuration
@EnableCaching
public class CacheConfig {
public enum CacheEnum {
FIRST_CACHE(300, 20000, 300),
SECOND_CACHE(60, 10000, 200);
private int second;
private long maxSize;
private int initSize;
CacheEnum(int second, long maxSize, int initSize) {
this.second = second;
this.maxSize = maxSize;
this.initSize = initSize;
}
}
@Bean("caffeineCacheManager")
public CacheManager cacheManager() {
SimpleCacheManager cacheManager = new SimpleCacheManager();
ArrayList<CaffeineCache> caffeineCaches = new ArrayList<>();
for (CacheEnum cacheEnum : CacheEnum.values()) {
caffeineCaches.add(new CaffeineCache(cacheEnum.name(),
Caffeine.newBuilder().expireAfterWrite(Duration.ofSeconds(cacheEnum.second))
.initialCapacity(cacheEnum.initSize)
.maximumSize(cacheEnum.maxSize).build()));
}
cacheManager.setCaches(caffeineCaches);
return cacheManager;
}
// @Bean("FIRST_CACHE")
// public Cache firstCache(CacheManager cacheManager) {
// return cacheManager.getCache("FIRST_CACHE");
// }
//
// @Bean("SECOND_CACHE")
// public Cache secondCache(CacheManager cacheManager) {
// return cacheManager.getCache("SECOND_CACHE");
// }
}
编写service层
package org.example.base;
import org.example.base.bean.User;
import org.example.base.service.UserService;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
@SpringBootTest
class BaseApplicationTests {
@Autowired
private UserService userService;
@Test
public void test() {
User user = new User(123,"jack l",18);
userService.setUser(user);
System.out.println(userService.getUser("123"));
}
}
测试
package org.example.base;
import org.example.base.bean.User;
import org.example.base.service.UserService;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
@SpringBootTest
class BaseApplicationTests {
@Autowired
private UserService userService;
@Test
public void test() {
User user = new User(123,"jack l",18);
userService.setUser(user);
System.out.println(userService.getUser("123"));
}
}
输出结果
第三种方式(使用Caffeine和spring cache)
- gradle依赖添加同方式二
- 配置类添加方式同方式二
- 编写service层
package org.example.base.service.impl;
import org.example.base.bean.User;
import org.example.base.service.UserService;
import org.springframework.cache.annotation.CacheConfig;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.CachePut;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;
@Service
//@CacheConfig(cacheNames = "SECOND_CACHE",cacheManager = "caffeineCacheManager")
public class UserServiceImpl implements UserService {
@Override
@CachePut(key = "#user.getId()", value = "SECOND_CACHE", cacheManager = "caffeineCacheManager")
public User setUser(User user) {
System.out.println("已经存储进缓存了");
return user;
}
@Override
@CacheEvict(value = "SECOND_CACHE",cacheManager = "caffeineCacheManager")
public void deleteUser(Integer id) {
System.out.println("缓存删除了");
}
@Override
@Cacheable(key = "#id", value = "SECOND_CACHE", cacheManager = "caffeineCacheManager")
public User getUser(Integer id) {
System.out.println("从数据库取值");
//模拟数据库中的数据
return null;
}
}
测试
package org.example.base;
import org.example.base.bean.User;
import org.example.base.service.UserService;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
@SpringBootTest
class BaseApplicationTests {
@Autowired
private UserService userService;
@Test
public void test4(){
User user1 = new User(123, "jack l", 18);
userService.setUser(user1);
System.out.println("从缓存中获取 "+userService.getUser(123));
System.out.println(userService.getUser(123322222));
userService.deleteUser(123);
System.out.println(userService.getUser(123));
}
}
输出结果
到此这篇关于springboot集成本地缓存Caffeine的三种使用方式(小结)的文章就介绍到这了,更多相关springboot集成本地缓存Caffeine内容请搜索编程网以前的文章或继续浏览下面的相关文章希望大家以后多多支持编程网！
免责声明：
① 本站未注明“稿件来源”的信息均来自网络整理。其文字、图片和音视频稿件的所属权归原作者所有。本站收集整理出于非商业性的教育和科研之目的，并不意味着本站赞同其观点或证实其内容的真实性。仅作为临时的测试数据，供内部测试之用。本站并未授权任何人以任何方式主动获取本站任何信息。
② 本站未注明“稿件来源”的临时测试数据将在测试完成后最终做删除处理。有问题或投稿请发送至: 邮箱/279061341@qq.com QQ/279061341
