wuye / MicroCommunit

  package com.java110.utils.cache;
  
  import com.java110.dto.system.AppRoute;
  import com.java110.utils.util.SerializeUtil;
  

  import java.util.Collections;

  import java.util.List;

  import java.util.Map;
  import java.util.concurrent.ConcurrentHashMap;

  
  /**

   * 路由配置（带本地内存缓存，避免每次请求都查远程Redis）

   * Created by wuxw on 2018/4/14.
   */
  public class AppRouteCache extends BaseCache {
  
      //后缀 用来刷缓存时删除 所有以这个为后缀的数据
      public final static String _SUFFIX_APP_ROUTE = "_SUFFIX_APP_ROUTE";
  

      // 本地内存缓存，避免每次请求都查远程Redis
      private static final Map<String, List<AppRoute>> LOCAL_CACHE = new ConcurrentHashMap<>();
  

      /**

       * 获取 路由配置（优先从本地缓存读取）

       */
      public static List<AppRoute> getAppRoute(String appId){

          String key = appId + _SUFFIX_APP_ROUTE;
  
          // 本地内存缓存命中，直接返回，省去远程Redis调用
          List<AppRoute> cached = LOCAL_CACHE.get(key);
          if (cached != null) {
              return cached.isEmpty() ? null : cached;
          }
  

          List<AppRoute> appRoutes = null;
          Jedis redis = null;
          try {
              redis = getJedis();

              appRoutes = SerializeUtil.unserializeList(redis.get(key.getBytes()), AppRoute.class);

              if(appRoutes == null || appRoutes.size() ==0) {
                  return null;
              }

              LOCAL_CACHE.put(key, appRoutes);

          }finally {
              if(redis != null){
                  redis.close();
              }
          }
          return appRoutes;
      }
  
  
      /**
       * 保存路由信息

       */
      public static void setAppRoute(List<AppRoute> appRoutes){

          String key = appRoutes.get(0).getAppId() + _SUFFIX_APP_ROUTE;
          LOCAL_CACHE.put(key, appRoutes);

          Jedis redis = null;
          try {
              redis = getJedis();

              redis.set(key.getBytes(), SerializeUtil.serializeList(appRoutes));

          }finally {
              if(redis != null){
                  redis.close();
              }
          }
      }
  

      /**
       * 清除本地缓存
       */
      public static void clearLocalCache() {
          LOCAL_CACHE.clear();
      }

  }