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缓存支持 缓存集成
redis缓存集成 缓存支持
Spring 框架只提供抽象#xff0c;不提供具体的缓存存储#xff0c;底层需要依赖第三方存储组件#xff0c;如果当前应用没有注册CacheManager 或者 CacheResolver 实例#xff0c;Spring Boot 会按以下缓存组件的顺序来…目录
缓存支持 缓存集成
redis缓存集成 缓存支持
Spring 框架只提供抽象不提供具体的缓存存储底层需要依赖第三方存储组件如果当前应用没有注册CacheManager 或者 CacheResolver 实例Spring Boot 会按以下缓存组件的顺序来检测:
GenericJCache (SR-107)(EhCache 3, Hazelcast, Infinispan 等等)HazelcastlnfinispanCouchbaseredis
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Spring Boot的自动配置类为CacheAutoConfiguration在 CacheAutoConfiguration 缓存自动配置类中引入了 CacheConfigurationImportSelector 配置选择器
AutoConfiguration(after { CouchbaseDataAutoConfiguration.class, HazelcastAutoConfiguration.class,HibernateJpaAutoConfiguration.class, RedisAutoConfiguration.class })
ConditionalOnClass(CacheManager.class)
ConditionalOnBean(CacheAspectSupport.class)
ConditionalOnMissingBean(value CacheManager.class, name cacheResolver)
EnableConfigurationProperties(CacheProperties.class)
Import({ CacheConfigurationImportSelector.class, CacheManagerEntityManagerFactoryDependsOnPostProcessor.class })
public class CacheAutoConfiguration {...static class CacheConfigurationImportSelector implements ImportSelector {Overridepublic String[] selectImports(AnnotationMetadata importingClassMetadata) {CacheType[] types CacheType.values();String[] imports new String[types.length];for (int i 0; i types.length; i) {imports[i] CacheConfigurations.getConfigurationClass(types[i]);}return imports;}}
该选择器通过 CacheConfiqurations 缓存配置类来选择对应缓存组件的配置类
final class CacheConfigurations {private static final MapCacheType, String MAPPINGS;static {MapCacheType, String mappings new EnumMap(CacheType.class);mappings.put(CacheType.GENERIC, GenericCacheConfiguration.class.getName());mappings.put(CacheType.HAZELCAST, HazelcastCacheConfiguration.class.getName());mappings.put(CacheType.INFINISPAN, InfinispanCacheConfiguration.class.getName());mappings.put(CacheType.JCACHE, JCacheCacheConfiguration.class.getName());mappings.put(CacheType.COUCHBASE, CouchbaseCacheConfiguration.class.getName());mappings.put(CacheType.REDIS, RedisCacheConfiguration.class.getName());mappings.put(CacheType.CAFFEINE, CaffeineCacheConfiguration.class.getName());mappings.put(CacheType.CACHE2K, Cache2kCacheConfiguration.class.getName());mappings.put(CacheType.SIMPLE, SimpleCacheConfiguration.class.getName());mappings.put(CacheType.NONE, NoOpCacheConfiguration.class.getName());MAPPINGS Collections.unmodifiableMap(mappings);}...代码...} 缓存集成
依赖配置
dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-cache/artifactId
/dependency
加入依赖后通过使用EnableCaching注解来启用缓存功能。通过参数type指定要使用的缓存组件以redis为示例
spring:cache: type: redis
禁用缓存
spring:cache: type: none 缓存类型type的值 GENERIC: 通用缓存类型HAZELCAST: Hazelcast 缓存类型INFINISPAN: Infinispan 缓存类型JCACHE: JCache 缓存类型COUCHBASE: Couchbase 缓存类型REDIS: Redis 缓存类型CAFFEINE: Caffeine 缓存类型CACHE2K: Cache2k 缓存类型SIMPLE: 简单缓存类型NONE: 无缓存类型 redis缓存集成
在Spring Boot 2.7中使用EnableCaching注解启用缓存功能时如果你想使用Redis作为缓存存储你需要在配置文件中指定Redis的相关配置。
application.properties或application.yml文件中添加以下配置 spring:cache:type: redis # 指定缓存使用redisredis:host: 127.0.0.1 # Redis服务器地址database: 1 # Redis数据库索引默认为0port: 6379 # Redis服务器连接端口password: # Redis服务器连接密码默认为空
依赖配置
dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-data-redis/artifactId
/dependency 配置缓存管理器
Configuration
EnableCaching
public class RedisTemplateConfiguration {/*** 默认过期时长单位秒*/Getterprivate long expire 60 * 60 * 24;
Beanpublic RedisTemplateString, Object redisTemplate(RedisConnectionFactory factory) {RedisTemplateString, Object redisTemplate new RedisTemplate();redisTemplate.setKeySerializer(RedisSerializer.string());redisTemplate.setHashKeySerializer(RedisSerializer.string());redisTemplate.setValueSerializer(RedisSerializer.java());redisTemplate.setHashValueSerializer(RedisSerializer.java());redisTemplate.setConnectionFactory(factory);return redisTemplate;}
Beanpublic HashOperationsString, String, Object hashOperations(RedisTemplateString, Object redisTemplate) {return redisTemplate.opsForHash();}
Beanpublic ValueOperationsString, String valueOperations(RedisTemplateString, String redisTemplate) {return redisTemplate.opsForValue();}
Beanpublic ListOperationsString, Object listOperations(RedisTemplateString, Object redisTemplate) {return redisTemplate.opsForList();}
Beanpublic SetOperationsString, Object setOperations(RedisTemplateString, Object redisTemplate) {return redisTemplate.opsForSet();}
Beanpublic ZSetOperationsString, Object zSetOperations(RedisTemplateString, Object redisTemplate) {return redisTemplate.opsForZSet();}
}
