diff --git a/ContentGrabbingJi-CacheStore-api/src/main/java/net/lamgc/cgj/bot/cache/CacheKey.java b/ContentGrabbingJi-CacheStore-api/src/main/java/net/lamgc/cgj/bot/cache/CacheKey.java
index a4c06a6..ecab7a0 100644
--- a/ContentGrabbingJi-CacheStore-api/src/main/java/net/lamgc/cgj/bot/cache/CacheKey.java
+++ b/ContentGrabbingJi-CacheStore-api/src/main/java/net/lamgc/cgj/bot/cache/CacheKey.java
@@ -45,6 +45,18 @@ public final class CacheKey {
         System.arraycopy(keyStrings, 0, this.key, 1, keyStrings.length);
     }
 
+    /**
+     * 提供一组字符串用于组成缓存键.
+     * @param keyStrings 键名组成数组.
+     */
+    public CacheKey(String[] keyStrings) {
+        Objects.requireNonNull(keyStrings);
+        if (keyStrings.length == 0) {
+            throw new IllegalArgumentException("Provide at least one element that makes up the key");
+        }
+        this.key = keyStrings;
+    }
+
     /**
      * 获取组成 Key 的字符串数组.
      * @return 返回用于组成 Key 的字符串数组.
diff --git a/ContentGrabbingJi-CacheStore-api/src/test/java/net/lamgc/cgj/bot/cache/CacheKeyTest.java b/ContentGrabbingJi-CacheStore-api/src/test/java/net/lamgc/cgj/bot/cache/CacheKeyTest.java
new file mode 100644
index 0000000..a50b1f3
--- /dev/null
+++ b/ContentGrabbingJi-CacheStore-api/src/test/java/net/lamgc/cgj/bot/cache/CacheKeyTest.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2020  LamGC
+ *
+ * ContentGrabbingJi is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * ContentGrabbingJi is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package net.lamgc.cgj.bot.cache;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class CacheKeyTest {
+
+    @Test
+    public void hashCodeAndEqualsTest() {
+        CacheKey key = new CacheKey("test");
+        Assert.assertEquals(key, key);
+        Assert.assertNotEquals(key, null);
+        Assert.assertNotEquals(key, new Object());
+        Assert.assertEquals(new CacheKey("test", "key01"), new CacheKey("test", "key01"));
+        Assert.assertEquals(new CacheKey("test", "key01").hashCode(), new CacheKey("test", "key01").hashCode());
+        Assert.assertNotEquals(new CacheKey("test", "key01"), new CacheKey("test", "key00"));
+        Assert.assertNotEquals(new CacheKey("test", "key01").hashCode(), new CacheKey("test", "key00").hashCode());
+        Assert.assertEquals(new CacheKey("test", "key01").toString(), "test.key01");
+    }
+
+    @Test
+    public void buildTest() {
+        Assert.assertThrows(NullPointerException.class, () -> new CacheKey(null));
+        Assert.assertThrows(NullPointerException.class, () -> new CacheKey(null, new String[0]));
+        Assert.assertThrows(IllegalArgumentException.class, () -> new CacheKey(new String[0]));
+        final String[] keys = new String[] {"test", "key01"};
+        Assert.assertArrayEquals(new CacheKey(keys).getKeyArray(), keys);
+    }
+
+    @Test
+    public void joinTest() {
+        Assert.assertEquals("test.key01", new CacheKey("test", "key01").join("."));
+        Assert.assertEquals("test:key01", new CacheKey("test", "key01").join(":"));
+    }
+
+}