diff --git a/example/.flutter-plugins-dependencies b/example/.flutter-plugins-dependencies
index d9e1def..177cf16 100644
--- a/example/.flutter-plugins-dependencies
+++ b/example/.flutter-plugins-dependencies
@@ -1 +1 @@
-{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"sqflite","path":"/Users/silvertree/.pub-cache/hosted/pub.dartlang.org/sqflite-1.3.1+1/","dependencies":[]}],"android":[{"name":"sqflite","path":"/Users/silvertree/.pub-cache/hosted/pub.dartlang.org/sqflite-1.3.1+1/","dependencies":[]}],"macos":[{"name":"sqflite","path":"/Users/silvertree/.pub-cache/hosted/pub.dartlang.org/sqflite-1.3.1+1/","dependencies":[]}],"linux":[],"windows":[],"web":[]},"dependencyGraph":[{"name":"sqflite","dependencies":[]}],"date_created":"2020-09-24 18:44:13.977860","version":"1.20.3"}
\ No newline at end of file
+{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"path_provider","path":"/usr/local/share/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider-1.6.27/","dependencies":[]},{"name":"sqflite","path":"/usr/local/share/flutter/.pub-cache/hosted/pub.dartlang.org/sqflite-1.3.2+4/","dependencies":[]}],"android":[{"name":"path_provider","path":"/usr/local/share/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider-1.6.27/","dependencies":[]},{"name":"sqflite","path":"/usr/local/share/flutter/.pub-cache/hosted/pub.dartlang.org/sqflite-1.3.2+4/","dependencies":[]}],"macos":[{"name":"path_provider_macos","path":"/usr/local/share/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider_macos-0.0.4+8/","dependencies":[]},{"name":"sqflite","path":"/usr/local/share/flutter/.pub-cache/hosted/pub.dartlang.org/sqflite-1.3.2+4/","dependencies":[]}],"linux":[{"name":"path_provider_linux","path":"/usr/local/share/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider_linux-0.0.1+2/","dependencies":[]}],"windows":[{"name":"path_provider_windows","path":"/usr/local/share/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider_windows-0.0.4+3/","dependencies":[]}],"web":[]},"dependencyGraph":[{"name":"path_provider","dependencies":["path_provider_macos","path_provider_linux","path_provider_windows"]},{"name":"path_provider_linux","dependencies":[]},{"name":"path_provider_macos","dependencies":[]},{"name":"path_provider_windows","dependencies":[]},{"name":"sqflite","dependencies":[]}],"date_created":"2021-03-10 08:36:28.914758","version":"1.22.5"}
\ No newline at end of file
diff --git a/example/ios/Flutter/flutter_export_environment.sh b/example/ios/Flutter/flutter_export_environment.sh
index 3fd2a96..add7df4 100755
--- a/example/ios/Flutter/flutter_export_environment.sh
+++ b/example/ios/Flutter/flutter_export_environment.sh
@@ -1,12 +1,12 @@
 #!/bin/sh
 # This is a generated file; do not edit or check into version control.
-export "FLUTTER_ROOT=/Users/silvertree/Documents/dev/flutter"
-export "FLUTTER_APPLICATION_PATH=/Users/silvertree/Documents/codes/dio-http-cache/example"
+export "FLUTTER_ROOT=/usr/local/share/flutter"
+export "FLUTTER_APPLICATION_PATH=/Users/isaacfi/Code/dio-http-cache/example"
 export "FLUTTER_TARGET=lib/main.dart"
 export "FLUTTER_BUILD_DIR=build"
 export "SYMROOT=${SOURCE_ROOT}/../build/ios"
 export "OTHER_LDFLAGS=$(inherited) -framework Flutter"
-export "FLUTTER_FRAMEWORK_DIR=/Users/silvertree/Documents/dev/flutter/bin/cache/artifacts/engine/ios"
+export "FLUTTER_FRAMEWORK_DIR=/usr/local/share/flutter/bin/cache/artifacts/engine/ios"
 export "FLUTTER_BUILD_NAME=1.0.0"
 export "FLUTTER_BUILD_NUMBER=1"
 export "DART_OBFUSCATION=false"
diff --git a/lib/src/store/store_disk.dart b/lib/src/store/store_disk.dart
index d81ea53..4366b14 100644
--- a/lib/src/store/store_disk.dart
+++ b/lib/src/store/store_disk.dart
@@ -4,7 +4,9 @@ import 'package:dio_http_cache/src/core/config.dart';
 import 'package:dio_http_cache/src/core/obj.dart';
 import 'package:dio_http_cache/src/store/store_impl.dart';
 import 'package:path/path.dart';
+import 'package:path_provider/path_provider.dart';
 import 'package:sqflite/sqflite.dart';
+import 'package:uuid/uuid.dart';
 
 class DiskCacheStore extends ICacheStore {
   final String _databasePath;
@@ -16,7 +18,7 @@ class DiskCacheStore extends ICacheStore {
   final String _columnSubKey = "subKey";
   final String _columnMaxAgeDate = "max_age_date";
   final String _columnMaxStaleDate = "max_stale_date";
-  final String _columnContent = "content";
+  final String _columnFileName = "file_name";
   final String _columnStatusCode = "statusCode";
   final String _columnHeaders = "headers";
 
@@ -59,9 +61,9 @@ class DiskCacheStore extends ICacheStore {
         $_columnSubKey text, 
         $_columnMaxAgeDate integer,
         $_columnMaxStaleDate integer,
-        $_columnContent BLOB,
+        $_columnFileName text,
         $_columnStatusCode integer,
-        $_columnHeaders BLOB,
+        $_columnHeaders blob,
         PRIMARY KEY ($_columnKey, $_columnSubKey)
         ) 
       ''';
@@ -111,19 +113,29 @@ class DiskCacheStore extends ICacheStore {
   Future<CacheObj> getCacheObj(String key, {String subKey}) async {
     var db = await _database;
     if (null == db) return null;
+    final cachePath = await _createCacheDir();
     var where = "$_columnKey=\"$key\"";
     if (null != subKey) where += " and $_columnSubKey=\"$subKey\"";
     var resultList = await db.query(_tableCacheObject, where: where);
     if (null == resultList || resultList.length <= 0) return null;
-    return await _decryptCacheObj(CacheObj.fromJson(resultList[0]));
+    var cacheObj = CacheObj.fromJson(resultList[0]);
+    var cacheFilePath = join(cachePath, resultList[0]['file_name']);
+    final file = File(cacheFilePath);
+    cacheObj.content = file.readAsBytesSync();
+    return await _decryptCacheObj(cacheObj);
   }
 
   @override
   Future<bool> setCacheObj(CacheObj obj) async {
     var db = await _database;
     if (null == db) return false;
+    final cacheDirPath = await _createCacheDir();
+    var fileName = 'cache_' + Uuid().v4().replaceAll('-', '');
+    final cacheFilePath = join(cacheDirPath, fileName);
+    final file = File(cacheFilePath);
     var content = await _encryptCacheStr(obj.content);
     var headers = await _encryptCacheStr(obj.headers);
+    await file.writeAsBytes(content);
     await db.insert(
         _tableCacheObject,
         {
@@ -131,7 +143,7 @@ class DiskCacheStore extends ICacheStore {
           _columnSubKey: obj.subKey ?? "",
           _columnMaxAgeDate: obj.maxAgeDate ?? 0,
           _columnMaxStaleDate: obj.maxStaleDate ?? 0,
-          _columnContent: content,
+          _columnFileName: fileName,
           _columnStatusCode: obj.statusCode,
           _columnHeaders: headers
         },
@@ -143,8 +155,22 @@ class DiskCacheStore extends ICacheStore {
   Future<bool> delete(String key, {String subKey}) async {
     var db = await _database;
     if (null == db) return false;
+    final cacheDirPath = await _createCacheDir();
+    final cacheDir = Directory(cacheDirPath);
+    if (!cacheDir.existsSync()) {
+      cacheDir.createSync(recursive: true);
+    }
     var where = "$_columnKey=\"$key\"";
     if (null != subKey) where += " and $_columnSubKey=\"$subKey\"";
+    var resultList = await db.query(_tableCacheObject, where: where);
+    if (null == resultList || resultList.length <= 0) return false;
+    resultList.forEach((ri) {
+      final cacheFilePath = join(cacheDirPath, ri['file_name']);
+      final file = File(cacheFilePath);
+      if (file.existsSync()) {
+        file.deleteSync();
+      }
+    });
     return 0 != await db.delete(_tableCacheObject, where: where);
   }
 
@@ -156,17 +182,47 @@ class DiskCacheStore extends ICacheStore {
 
   Future<bool> _clearExpired(Database db) async {
     if (null == db) return false;
+    final cacheDirPath = await _createCacheDir();
+    final cacheDir = Directory(cacheDirPath);
+    if (!cacheDir.existsSync()) {
+      cacheDir.createSync(recursive: true);
+    }
     var now = DateTime.now().millisecondsSinceEpoch;
     var where1 = "$_columnMaxStaleDate > 0 and $_columnMaxStaleDate < $now";
     var where2 = "$_columnMaxStaleDate <= 0 and $_columnMaxAgeDate < $now";
+    var resultList =
+        await db.query(_tableCacheObject, where: "( $where1 ) or ( $where2 )");
+    if (null == resultList || resultList.length <= 0) return false;
+    resultList.forEach((ri) {
+      final cacheFilePath = join(cacheDirPath, ri['file_name']);
+      final file = File(cacheFilePath);
+      if (file.existsSync()) {
+        file.deleteSync();
+      }
+    });
     return 0 !=
         await db.delete(_tableCacheObject, where: "( $where1 ) or ( $where2 )");
   }
 
+  Future<String> _createCacheDir() async {
+    final cachePath =
+        join((await getApplicationDocumentsDirectory()).path, _databaseName);
+    final cacheDir = Directory(cachePath);
+    if (!(await cacheDir.exists())) {
+      await cacheDir.create(recursive: true);
+    }
+    return cachePath;
+  }
+
   @override
   Future<bool> clearAll() async {
     var db = await _database;
     if (null == db) return false;
+    final cacheDirPath = await _createCacheDir();
+    final cacheDir = Directory(cacheDirPath);
+    if (await cacheDir.exists()) {
+      await cacheDir.delete(recursive: true);
+    }
     return 0 != await db.delete(_tableCacheObject);
   }
 
diff --git a/pubspec.yaml b/pubspec.yaml
index ce92ccf..5a0e1dc 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -11,13 +11,15 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  quiver: ^2.0.3
-  json_serializable: ^3.0.0
-  json_annotation: ^3.0.0
+  crypto: ^2.1.1+1
   dio: ^3.0.1
+  json_annotation: ^3.0.0
+  json_serializable: ^3.0.0
+  path: ^1.7.0
+  path_provider: ^1.6.18
+  quiver: ^2.0.3
   sqflite: ^1.1.6+3
-  path: ^1.6.2
-  crypto: ^2.1.1+1
+  uuid: ^2.2.2
 
 dev_dependencies:
   flutter_test: