diff --git a/jcpp-app/src/main/java/sanbing/jcpp/app/service/cache/session/PileSessionCacheKey.java b/jcpp-app/src/main/java/sanbing/jcpp/app/service/cache/session/PileSessionCacheKey.java
index e18f0e4..8d6f5a6 100644
--- a/jcpp-app/src/main/java/sanbing/jcpp/app/service/cache/session/PileSessionCacheKey.java
+++ b/jcpp-app/src/main/java/sanbing/jcpp/app/service/cache/session/PileSessionCacheKey.java
@@ -7,35 +7,26 @@ package sanbing.jcpp.app.service.cache.session;
 import lombok.Builder;
 import lombok.EqualsAndHashCode;
 import lombok.Getter;
-import lombok.RequiredArgsConstructor;
 
 import java.io.Serializable;
-import java.util.Optional;
-import java.util.UUID;
 
 /**
  * @author baigod
  */
 @Getter
 @EqualsAndHashCode
-@RequiredArgsConstructor
 @Builder
 public class PileSessionCacheKey implements Serializable {
 
-    private final UUID pileId;
     private final String pileCode;
 
-    public PileSessionCacheKey(UUID pileId) {
-        this(pileId, null);
-    }
-
     public PileSessionCacheKey(String pileCode) {
-        this(null, pileCode);
+        this.pileCode = pileCode;
     }
 
     @Override
     public String toString() {
-        return Optional.ofNullable(pileId).map(UUID::toString).orElse(pileCode);
+        return pileCode;
     }
 
 }
\ No newline at end of file
diff --git a/jcpp-app/src/main/java/sanbing/jcpp/app/service/impl/DefaultPileProtocolService.java b/jcpp-app/src/main/java/sanbing/jcpp/app/service/impl/DefaultPileProtocolService.java
index e5853ae..10fc0dd 100644
--- a/jcpp-app/src/main/java/sanbing/jcpp/app/service/impl/DefaultPileProtocolService.java
+++ b/jcpp-app/src/main/java/sanbing/jcpp/app/service/impl/DefaultPileProtocolService.java
@@ -108,7 +108,6 @@ public class DefaultPileProtocolService implements PileProtocolService {
         pileSession.setRemoteAddress(remoteAddress);
         pileSession.setNodeId(nodeId);
         pileSession.setNodeWebapiIpPort(nodeWebapiIpPort);
-        pileSessionCache.put(new PileSessionCacheKey(pile.getId()), pileSession);
         pileSessionCache.put(new PileSessionCacheKey(pile.getPileCode()), pileSession);
     }