Update: cache module, security modules and build

src/main/java/com/example/scaffold/cache/CacheConfig.java

@@ -0,0 +1,100 @@
+package com.example.scaffold.cache;
+
+import com.github.benmanes.caffeine.cache.Caffeine;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.cache.CacheManager;
+import org.springframework.cache.annotation.EnableCaching;
+import org.springframework.cache.caffeine.CaffeineCacheManager;
+import org.springframework.cache.interceptor.KeyGenerator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Primary;
+import org.springframework.data.redis.cache.RedisCacheConfiguration;
+import org.springframework.data.redis.cache.RedisCacheManager;
+import org.springframework.data.redis.connection.RedisConnectionFactory;
+import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
+import org.springframework.data.redis.serializer.RedisSerializationContext;
+import org.springframework.data.redis.serializer.StringRedisSerializer;
+
+import java.time.Duration;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * 缓存配置 - 支持 Caffeine(本地) 和 Redis(分布式)
+ * 
+ * 学习要点：
+ * 1. @EnableCaching - 启用 Spring Cache
+ * 2. @Cacheable - 缓存方法结果
+ * 3. @CacheEvict - 清除缓存
+ * 4. @CachePut - 更新缓存
+ */
+@Slf4j
+@Configuration
+@EnableCaching
+public class CacheConfig {
+    
+    /**
+     * Caffeine 本地缓存 - 默认
+     */
+    @Bean
+    @Primary
+    @ConditionalOnProperty(name = "cache.type", havingValue = "caffeine", matchIfMissing = true)
+    public CacheManager caffeineCacheManager() {
+        log.info("🚀 启用 Caffeine 本地缓存");
+        CaffeineCacheManager cacheManager = new CaffeineCacheManager();
+        cacheManager.setCaffeine(Caffeine.newBuilder()
+            // 初始容量
+            .initialCapacity(100)
+            // 最大容量
+            .maximumSize(1000)
+            // 写入后过期时间
+            .expireAfterWrite(10, TimeUnit.MINUTES)
+            // 记录命中率
+            .recordStats()
+        );
+        return cacheManager;
+    }
+    
+    /**
+     * Redis 分布式缓存
+     */
+    @Bean
+    @ConditionalOnProperty(name = "cache.type", havingValue = "redis")
+    public CacheManager redisCacheManager(RedisConnectionFactory connectionFactory) {
+        log.info("🚀 启用 Redis 分布式缓存");
+        
+        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
+            // 键序列化
+            .serializeKeysWith(RedisSerializationContext.SerializationPair
+                .fromSerializer(new StringRedisSerializer()))
+            // 值序列化
+            .serializeValuesWith(RedisSerializationContext.SerializationPair
+                .fromSerializer(new GenericJackson2JsonRedisSerializer()))
+            // 过期时间
+            .entryTtl(Duration.ofMinutes(10))
+            // 不缓存 null
+            .disableCachingNullValues();
+        
+        return RedisCacheManager.builder(connectionFactory)
+            .cacheDefaults(config)
+            .transactionAware()
+            .build();
+    }
+    
+    /**
+     * 自定义缓存 Key 生成器
+     */
+    @Bean
+    public KeyGenerator customKeyGenerator() {
+        return (target, method, params) -> {
+            StringBuilder sb = new StringBuilder();
+            sb.append(target.getClass().getSimpleName()).append(":");
+            sb.append(method.getName()).append(":");
+            for (Object param : params) {
+                sb.append(param).append("-");
+            }
+            return sb.toString();
+        };
+    }
+}