diff --git a/SDWebImage/SDImageCache.h b/SDWebImage/SDImageCache.h
index d512711..8e08aa1 100644
--- a/SDWebImage/SDImageCache.h
+++ b/SDWebImage/SDImageCache.h
@@ -76,6 +76,14 @@ typedef void(^SDWebImageCalculateSizeBlock)(NSUInteger fileCount, NSUInteger tot
  */
 - (id)initWithNamespace:(NSString *)ns;
 
+/**
+ * Init a new cache store with a specific namespace and directory
+ *
+ * @param ns        The namespace to use for this cache store
+ * @param directory Directory to cache disk images in
+ */
+- (id)initWithNamespace:(NSString *)ns diskCacheDirectory:(NSString *)directory;
+
 -(NSString *)makeDiskCachePath:(NSString*)fullNamespace;
 
 /**
diff --git a/SDWebImage/SDImageCache.m b/SDWebImage/SDImageCache.m
index 1a596ec..2202602 100644
--- a/SDWebImage/SDImageCache.m
+++ b/SDWebImage/SDImageCache.m
@@ -84,6 +84,11 @@ FOUNDATION_STATIC_INLINE NSUInteger SDCacheCostForImage(UIImage *image) {
 }
 
 - (id)initWithNamespace:(NSString *)ns {
+    NSString *path = [self makeDiskCachePath:ns];
+    return [self initWithNamespace:ns diskCacheDirectory:path];
+}
+
+- (id)initWithNamespace:(NSString *)ns diskCacheDirectory:(NSString *)directory {
     if ((self = [super init])) {
         NSString *fullNamespace = [@"com.hackemist.SDWebImageCache." stringByAppendingString:ns];
 
@@ -101,7 +106,12 @@ FOUNDATION_STATIC_INLINE NSUInteger SDCacheCostForImage(UIImage *image) {
         _memCache.name = fullNamespace;
 
         // Init the disk cache
-        _diskCachePath = [self makeDiskCachePath:fullNamespace];
+        if (directory != nil) {
+            _diskCachePath = [directory stringByAppendingPathComponent:fullNamespace];
+        } else {
+            NSString *path = [self makeDiskCachePath:ns];
+            _diskCachePath = path;
+        }
 
         // Set decompression to YES
         _shouldDecompressImages = YES;