diff --git a/jero-boot/jero-cloud-module/jero-cloud-xxljob/src/main/java/com/xxl/job/admin/core/route/strategy/ExecutorRouteLRU.java b/jero-boot/jero-cloud-module/jero-cloud-xxljob/src/main/java/com/xxl/job/admin/core/route/strategy/ExecutorRouteLRU.java
index 2d540067..a01f5c8e 100644
--- a/jero-boot/jero-cloud-module/jero-cloud-xxljob/src/main/java/com/xxl/job/admin/core/route/strategy/ExecutorRouteLRU.java
+++ b/jero-boot/jero-cloud-module/jero-cloud-xxljob/src/main/java/com/xxl/job/admin/core/route/strategy/ExecutorRouteLRU.java
@@ -19,15 +19,15 @@ import java.util.concurrent.ConcurrentMap;
  */
 public class ExecutorRouteLRU extends ExecutorRouter {
 
-    private static ConcurrentMap<Integer, LinkedHashMap<String, String>> jobLRUMap = new ConcurrentHashMap<Integer, LinkedHashMap<String, String>>();
-    private static long CACHE_VALID_TIME = 0;
+    private static ConcurrentMap<Integer, LinkedHashMap<String, String>> jobLRUMap = new ConcurrentHashMap<>();
+    private long cacheValidTime = 0;
 
     public String route(int jobId, List<String> addressList) {
 
         // cache clear
-        if (System.currentTimeMillis() > CACHE_VALID_TIME) {
+        if (System.currentTimeMillis() > cacheValidTime) {
             jobLRUMap.clear();
-            CACHE_VALID_TIME = System.currentTimeMillis() + 1000*60*60*24;
+            cacheValidTime = System.currentTimeMillis() + 1000*60*60*24;
         }
 
         // init lru
@@ -38,15 +38,16 @@ public class ExecutorRouteLRU extends ExecutorRouter {
              *      a、accessOrder：true=访问顺序排序（get/put时排序）；false=插入顺序排期；
              *      b、removeEldestEntry：新增元素时将会调用，返回true时会删除最老元素；可封装LinkedHashMap并重写该方法，比如定义最大容量，超出是返回true即可实现固定长度的LRU算法；
              */
-            lruItem = new LinkedHashMap<String, String>(16, 0.75f, true);
+            lruItem = new LinkedHashMap<>(16, 0.75f, true);
             jobLRUMap.putIfAbsent(jobId, lruItem);
         }
 
         // put new
         for (String address: addressList) {
-            if (!lruItem.containsKey(address)) {
+            /*if (!lruItem.containsKey(address)) {
                 lruItem.put(address, address);
-            }
+            }*/
+            lruItem.computeIfAbsent(address,key->address);
         }
         // remove old
         List<String> delKeys = new ArrayList<>();
@@ -55,7 +56,7 @@ public class ExecutorRouteLRU extends ExecutorRouter {
                 delKeys.add(existKey);
             }
         }
-        if (delKeys.size() > 0) {
+        if (!delKeys.isEmpty()) {
             for (String delKey: delKeys) {
                 lruItem.remove(delKey);
             }
@@ -63,14 +64,13 @@ public class ExecutorRouteLRU extends ExecutorRouter {
 
         // load
         String eldestKey = lruItem.entrySet().iterator().next().getKey();
-        String eldestValue = lruItem.get(eldestKey);
-        return eldestValue;
+        return lruItem.get(eldestKey);
     }
 
     @Override
     public ReturnT<String> route(TriggerParam triggerParam, List<String> addressList) {
         String address = route(triggerParam.getJobId(), addressList);
-        return new ReturnT<String>(address);
+        return new ReturnT<>(address);
     }
 
 }