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Pre Merge pull request !89 from CoderKK/feat-cache
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07fd5e4839
@ -5,10 +5,13 @@ import jakarta.annotation.Resource;
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import net.lab1024.sa.base.module.support.cache.CacheService;
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import net.lab1024.sa.base.module.support.cache.CaffeineCacheServiceImpl;
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import net.lab1024.sa.base.module.support.cache.RedisCacheServiceImpl;
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import net.lab1024.sa.base.module.support.cache.manager.CustomRedisCacheManager;
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import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
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import org.springframework.cache.CacheManager;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.data.redis.cache.RedisCacheConfiguration;
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import org.springframework.data.redis.cache.RedisCacheWriter;
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import org.springframework.data.redis.connection.RedisConnectionFactory;
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import org.springframework.data.redis.serializer.RedisSerializationContext;
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@ -26,15 +29,30 @@ public class CacheConfig {
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@Resource
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private RedisConnectionFactory factory;
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private RedisConnectionFactory redisConnectionFactory;
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/**
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* 创建自定义Redis缓存管理器Bean 整合spring-cache
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* Redis连接工厂,用于建立与Redis服务器的连接
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*
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* @return CacheManager Redis缓存管理器实例
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*/
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@Bean
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@ConditionalOnProperty(prefix = "spring.cache", name = {"type"}, havingValue = REDIS_CACHE)
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public RedisCacheConfiguration redisCacheConfiguration() {
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return RedisCacheConfiguration.defaultCacheConfig()
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public CacheManager cacheManager() {
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// 使用非阻塞模式的缓存写入器,适用于大多数高并发场景
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RedisCacheWriter redisCacheWriter = RedisCacheWriter.nonLockingRedisCacheWriter(redisConnectionFactory);
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// 构建默认缓存配置
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RedisCacheConfiguration defaultCacheConfig = RedisCacheConfiguration.defaultCacheConfig()
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// 禁止缓存 null 值,避免缓存穿透
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.disableCachingNullValues()
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.computePrefixWith(name -> "cache:" + name + ":")
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.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericFastJsonRedisSerializer()));
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// 使用 FastJSON 序列化缓存值,支持复杂对象
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.serializeValuesWith(RedisSerializationContext.SerializationPair
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.fromSerializer(new GenericFastJsonRedisSerializer()));
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// 返回自定义缓存管理器,支持 cacheName#ttl 格式与永久缓存(#-1)
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return new CustomRedisCacheManager(redisCacheWriter, defaultCacheConfig);
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}
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@Bean
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@ -10,6 +10,7 @@ import org.springframework.data.redis.cache.RedisCacheManager;
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import org.springframework.data.redis.connection.RedisConnection;
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import org.springframework.data.redis.connection.RedisConnectionFactory;
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import java.nio.charset.StandardCharsets;
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import java.util.Collection;
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import java.util.List;
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import java.util.Set;
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@ -53,7 +54,7 @@ public class RedisCacheServiceImpl implements CacheService {
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if (keys != null) {
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return keys.stream().map(key -> {
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String redisKey = StrUtil.str(key, "utf-8");
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String redisKey = StrUtil.str(key, StandardCharsets.UTF_8);
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// 从 Redis 键中提取出最后一个冒号后面的字符串作为真正的键
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return redisKey.substring(redisKey.lastIndexOf(":") + 1);
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}).collect(Collectors.toList());
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@ -0,0 +1,144 @@
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package net.lab1024.sa.base.module.support.cache.manager;
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import cn.hutool.core.util.StrUtil;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.boot.convert.DurationStyle;
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import org.springframework.data.redis.cache.*;
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import java.time.Duration;
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import static net.lab1024.sa.base.common.constant.StringConst.COLON;
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/**
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* 自定义 RedisCacheManager,支持在 cacheName 中通过 '#' 指定 TTL(过期时间)。
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* @Author CoderKK
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* @Date 2025-08-15 13:01:01
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* <p>
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* 支持格式:{@code cacheName#ttl},其中 ttl 支持 Spring 的 Duration 格式。
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* 特殊值:{@code -1} 表示永久缓存(永不过期)。
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* </p>
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*
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* <h3>使用示例:</h3>
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* <pre>
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* // 10 秒后过期
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* @Cacheable(value = "user#10s", key = "#id")
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* // 2 小时后过期
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* @Cacheable(value = "report#2h", key = "#date")
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* // 30 分钟后过期
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* @Cacheable(value = "session#30m", key = "#token")
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* // 永不过期(永久缓存),适用于极少变化的配置数据
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* @Cacheable(value = "appConfig#-1", key = "'globalSettings'")
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* // 无 TTL,使用全局默认过期时间(如 7 天)
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* @Cacheable(value = "product", key = "#productId")
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* </pre>
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*
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* <h3>生成的 Redis Key 格式:</h3>
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* <pre>
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* cache:cacheName:key
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* 例如:cache:user:123
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* cache:appConfig:globalSettings
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* </pre>
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*
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* <h3>支持的 TTL 单位:</h3>
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* <ul>
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* <li>{@code ms} / {@code millis} / {@code milliseconds} - 毫秒</li>
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* <li>{@code s} / {@code secs} / {@code seconds} - 秒</li>
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* <li>{@code m} / {@code mins} / {@code minutes} - 分钟</li>
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* <li>{@code h} / {@code hrs} / {@code hours} - 小时</li>
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* <li>{@code d} / {@code days} - 天</li>
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* </ul>
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*
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* <h3>注意事项:</h3>
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* <ul>
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* <li>不写单位默认为毫秒</li>
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* <li>永久缓存(#-1)不会自动过期,请配合 @CacheEvict 手动清理。</li>
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* <li>避免对频繁更新的数据使用永久缓存,防止数据陈旧。</li>
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* <li>cacheName 中的 '#' 只解析第一个,后续字符将作为 TTL 处理。</li>
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* </ul>
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*/
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@Slf4j
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public class CustomRedisCacheManager extends RedisCacheManager {
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/**
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* 缓存全局前缀
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*/
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private static final String CACHE_PREFIX = "cache";
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/**
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* 自定义 TTL 分隔符,用于在 cacheName 后附加过期时间
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*/
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private static final String CUSTOM_TTL_SEPARATOR = "#";
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/**
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* 默认缓存过期时间:7 天
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*/
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private static final Duration DEFAULT_TTL = Duration.ofDays(7);
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public CustomRedisCacheManager(RedisCacheWriter cacheWriter, RedisCacheConfiguration defaultCacheConfiguration) {
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super(cacheWriter, defaultCacheConfiguration);
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}
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/**
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* 创建 RedisCache 实例,支持从 cacheName 解析 TTL
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*
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* @param name 缓存名称(支持 name#ttl 格式)
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* @param cacheConfig 默认缓存配置
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* @return RedisCache
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*/
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@Override
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protected RedisCache createRedisCache(String name, RedisCacheConfiguration cacheConfig) {
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Duration ttl = parseTtlFromCacheName(name);
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if (ttl == null) {
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ttl = DEFAULT_TTL;
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}
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CacheKeyPrefix keyPrefix = cacheName -> {
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if (StrUtil.isBlank(cacheName)) {
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return CACHE_PREFIX + COLON;
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}
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String[] parts = cacheName.split(CUSTOM_TTL_SEPARATOR, 2);
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String cleanName = StrUtil.trim(parts[0]);
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return CACHE_PREFIX + COLON + cleanName + COLON;
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};
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// 构建最终缓存配置:设置 key 前缀 + TTL
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RedisCacheConfiguration config = cacheConfig.computePrefixWith(keyPrefix).entryTtl(ttl);
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return super.createRedisCache(name, config);
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}
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/**
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* 从 cacheName 中解析 TTL
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*
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* @param name 缓存名称,格式如:users#10m, products#2h, config#-1(永久)
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* @return 解析出的 Duration若无效则返回 null;若为 -1,则返回 Duration.ofMillis(-1) 表示永久缓存
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*/
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private Duration parseTtlFromCacheName(String name) {
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if (StrUtil.isBlank(name)) {
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return null;
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}
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String[] parts = name.split(CUSTOM_TTL_SEPARATOR, 2);
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if (parts.length < 2) {
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return null; // 无 TTL 部分
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}
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String ttlStr = StrUtil.trim(parts[1]);
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if (StrUtil.isBlank(ttlStr)) {
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return null;
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}
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// 特殊处理:-1 表示永久缓存
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if ("-1".equals(ttlStr)) {
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return Duration.ofMillis(-1); // Spring Redis 中负数 Duration 表示永不过期
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}
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try {
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Duration ttl = DurationStyle.detectAndParse(ttlStr);
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return ttl.toSeconds() > 0 ? ttl : null;
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} catch (IllegalArgumentException e) {
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log.debug("解析缓存 TTL 失败,cacheName='{}', ttl='{}', 错误: {}", name, ttlStr, e.getMessage());
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return null;
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}
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}
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}
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