top.dcenter.ums.security.core.redis.config

类 RedisCacheAutoConfiguration

java.lang.Object

top.dcenter.ums.security.core.redis.config.RedisCacheAutoConfiguration

@Configuration
 @ConditionalOnProperty(prefix="ums.cache.redis",
                       name="open",
                       havingValue="true")
 @EnableCaching
public class RedisCacheAutoConfiguration
extends Object

简单的实现 Redis cache 自定义配置 CacheManager, 向 IOC 容器中注入 beanName=auth2RedisHashCacheManager 的实例.

此 redis Cache 对 RedisCache 进行了修改, 把缓存的 KV 格式该成了 Hash 格式.
1. Cacheable 操作异常处理:
异常处理在日志中打印出错误信息，但是放行，保证redis服务器出现连接等问题的时候不影响程序的正常运行，使得能够出问题时不用缓存.
Cacheable 操作自定义异常处理: 实现 CacheErrorHandler 注入 IOC 容器即可自动注入 CachingConfigurerSupport, 当然也可自定义 CachingConfigurerSupport .
2. 缓存穿透: 对查询结果 null 值进行缓存, 添加时更新缓存 null 值, 或者 删除此缓存.
3. 取缓存 TTL 的 20% 作为动态的随机变量上下浮动, 防止同时缓存失效而缓存击穿.

版本:

V2.0 Created by 2020-06-11 22:57

作者:

Mark Paluch, Andy Wilkinson, YongWu zheng

字段概要

字段

限定符和类型	字段和说明
static org.slf4j.Logger	log
static String	REDIS_CACHE_HASH_KEY_SEPARATE redis cache 解析Key：根据分隔符 "__" 来判断是否是 hash 类型
static String	REDIS_CACHE_KEY_SEPARATE

构造器概要

构造器

构造器和说明

RedisCacheAutoConfiguration(RedisCacheProperties redisCacheProperties, org.springframework.boot.autoconfigure.data.redis.RedisProperties properties, org.springframework.beans.factory.ObjectProvider<org.springframework.data.redis.connection.RedisSentinelConfiguration> sentinelConfigurationProvider, org.springframework.beans.factory.ObjectProvider<org.springframework.data.redis.connection.RedisClusterConfiguration> clusterConfigurationProvider, Map<String,SimpleModuleHolder> jackson2ModuleHolderMap)

方法概要

限定符和类型	方法和说明
org.springframework.cache.interceptor.CacheErrorHandler	cacheErrorHandler()
org.springframework.cache.annotation.CachingConfigurerSupport	cachingConfigurerSupport(org.springframework.cache.interceptor.CacheErrorHandler cacheErrorHandler)
protected org.springframework.data.redis.connection.RedisClusterConfiguration	getClusterConfiguration() Create a RedisClusterConfiguration if necessary.
protected org.springframework.boot.autoconfigure.data.redis.RedisProperties	getProperties()
protected org.springframework.data.redis.connection.RedisSentinelConfiguration	getSentinelConfig()
protected org.springframework.data.redis.connection.RedisStandaloneConfiguration	getStandaloneConfig()
protected top.dcenter.ums.security.core.redis.config.RedisCacheAutoConfiguration.ConnectionInfo	parseUrl(String url)
org.springframework.cache.CacheManager	redisCacheManager(org.springframework.data.redis.connection.RedisConnectionFactory redisConnectionFactory, org.springframework.beans.factory.ObjectProvider<org.springframework.boot.autoconfigure.data.redis.LettuceClientConfigurationBuilderCustomizer> builderCustomizers, io.lettuce.core.resource.ClientResources clientResources) 缓存管理器, 当 IOC 容器中有 beanName=auth2RedisHashCacheManager 时会替换此实例
RemoveConnectionsByConnectionKeyWithUserIdKeyGenerator	removeConnectionsByConnectionKeyWithUserIdKeyGenerator()

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

log

public static final org.slf4j.Logger log

REDIS_CACHE_HASH_KEY_SEPARATE

public static final String REDIS_CACHE_HASH_KEY_SEPARATE

redis cache 解析Key：根据分隔符 "__" 来判断是否是 hash 类型

另请参阅:

常量字段值

REDIS_CACHE_KEY_SEPARATE

public static final String REDIS_CACHE_KEY_SEPARATE

另请参阅:

常量字段值

构造器详细资料

RedisCacheAutoConfiguration

public RedisCacheAutoConfiguration(RedisCacheProperties redisCacheProperties,
                                   org.springframework.boot.autoconfigure.data.redis.RedisProperties properties,
                                   org.springframework.beans.factory.ObjectProvider<org.springframework.data.redis.connection.RedisSentinelConfiguration> sentinelConfigurationProvider,
                                   org.springframework.beans.factory.ObjectProvider<org.springframework.data.redis.connection.RedisClusterConfiguration> clusterConfigurationProvider,
                                   @Autowired(required=false)
                                   Map<String,SimpleModuleHolder> jackson2ModuleHolderMap)

方法详细资料

redisCacheManager

@Bean(value="auth2RedisHashCacheManager")
 @ConditionalOnMissingBean(name="auth2RedisHashCacheManager")
public org.springframework.cache.CacheManager redisCacheManager(org.springframework.data.redis.connection.RedisConnectionFactory redisConnectionFactory,
                                                                                                                                                                          org.springframework.beans.factory.ObjectProvider<org.springframework.boot.autoconfigure.data.redis.LettuceClientConfigurationBuilderCustomizer> builderCustomizers,
                                                                                                                                                                          io.lettuce.core.resource.ClientResources clientResources)

缓存管理器, 当 IOC 容器中有 beanName=auth2RedisHashCacheManager 时会替换此实例

返回:

CacheManager

removeConnectionsByConnectionKeyWithUserIdKeyGenerator

@Bean(value="removeConnectionsByConnectionKeyWithUserIdKeyGenerator")
public RemoveConnectionsByConnectionKeyWithUserIdKeyGenerator removeConnectionsByConnectionKeyWithUserIdKeyGenerator()

cacheErrorHandler

@Bean
 @ConditionalOnMissingBean(type="org.springframework.cache.interceptor.CacheErrorHandler")
public org.springframework.cache.interceptor.CacheErrorHandler cacheErrorHandler()

cachingConfigurerSupport

@Bean
 @ConditionalOnMissingBean(type="org.springframework.cache.annotation.CachingConfigurerSupport")
public org.springframework.cache.annotation.CachingConfigurerSupport cachingConfigurerSupport(org.springframework.cache.interceptor.CacheErrorHandler cacheErrorHandler)

getStandaloneConfig

protected final org.springframework.data.redis.connection.RedisStandaloneConfiguration getStandaloneConfig()

getSentinelConfig

protected final org.springframework.data.redis.connection.RedisSentinelConfiguration getSentinelConfig()

getClusterConfiguration

protected final org.springframework.data.redis.connection.RedisClusterConfiguration getClusterConfiguration()

Create a RedisClusterConfiguration if necessary.

返回:

null if no cluster settings are set.

getProperties

protected final org.springframework.boot.autoconfigure.data.redis.RedisProperties getProperties()

parseUrl

protected top.dcenter.ums.security.core.redis.config.RedisCacheAutoConfiguration.ConnectionInfo parseUrl(String url)