diff --git a/powerjob-worker/src/main/java/com/github/kfcfans/powerjob/worker/common/utils/LRUCache.java b/powerjob-worker/src/main/java/com/github/kfcfans/powerjob/worker/common/utils/LRUCache.java
index 429af541..110ad041 100644
--- a/powerjob-worker/src/main/java/com/github/kfcfans/powerjob/worker/common/utils/LRUCache.java
+++ b/powerjob-worker/src/main/java/com/github/kfcfans/powerjob/worker/common/utils/LRUCache.java
@@ -19,7 +19,7 @@ public class LRUCache<K, V> {
     public LRUCache(int cacheSize) {
         innerCache = CacheBuilder.newBuilder()
                 .concurrencyLevel(2)
-                .initialCapacity(cacheSize)
+                .maximumSize(cacheSize)
                 .build();
     }
 
diff --git a/powerjob-worker/src/test/java/com/github/kfcfans/powerjob/function/LRUCacheTest.java b/powerjob-worker/src/test/java/com/github/kfcfans/powerjob/function/LRUCacheTest.java
new file mode 100644
index 00000000..3ac6c9e3
--- /dev/null
+++ b/powerjob-worker/src/test/java/com/github/kfcfans/powerjob/function/LRUCacheTest.java
@@ -0,0 +1,23 @@
+package com.github.kfcfans.powerjob.function;
+
+import com.github.kfcfans.powerjob.worker.common.utils.LRUCache;
+import org.junit.jupiter.api.Test;
+
+/**
+ * LRU cache test
+ *
+ * @author tjq
+ * @since 2020/6/26
+ */
+public class LRUCacheTest {
+
+    @Test
+    public void testCache() {
+        LRUCache<Long, String> cache = new LRUCache<>(10);
+        for (long i = 0; i < 100; i++) {
+            cache.put(i, "STR:" + i);
+        }
+        cache.forEach((x, y) -> System.out.println("key:" + x));
+    }
+
+}