add support for byte[] in AerospikeCacheKey

src/main/java/org/springframework/data/aerospike/cache/AerospikeCacheKey.java

@@ -4,7 +4,7 @@
 import lombok.Getter;
 
 /**
- * Wrapper class used for caching with methods that receive either a String or a long number
+ * Wrapper class used in caching. Receives hash of the cache key as a String, a long number or a byte array.
  */
 public class AerospikeCacheKey {
 
@@ -19,6 +19,10 @@ private AerospikeCacheKey(long number) {
         this.value = new Value.LongValue(number);
     }
 
+    private AerospikeCacheKey(byte[] data) {
+        this.value = new Value.BytesValue(data);
+    }
+
     /**
      * Instantiate AerospikeCacheKey instance with a String.
      *
@@ -38,4 +42,15 @@ public static AerospikeCacheKey of(String string) {
     public static AerospikeCacheKey of(long number) {
         return new AerospikeCacheKey(number);
     }
+
+    /**
+     * Instantiate AerospikeCacheKey instance with a byte array.
+     *
+     * @param data byte array
+     * @return new instance of AerospikeCacheKey initialized with the given parameter
+     */
+    public static AerospikeCacheKey of(byte[] data) {
+        return new AerospikeCacheKey(data);
+    }
+
 }