diff --git a/CHANGELOG.md b/CHANGELOG.md
index dccd758..e7dcbdb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,7 @@
 
+## 3.0.0-rc.3
+- 将请求默认并行从64调整到8，减少对taskpool execute内存消耗
+
 ## 3.0.0-rc.2
 - 新增支持使用一个或多个图片变换，如模糊，高亮等
 
diff --git a/library/oh-package.json5 b/library/oh-package.json5
index 5958b89..fa111f0 100644
--- a/library/oh-package.json5
+++ b/library/oh-package.json5
@@ -14,7 +14,7 @@
   "main": "index.ets",
   "repository": "https://gitee.com/openharmony-tpc/ImageKnife",
   "type": "module",
-  "version": "3.0.0-rc.2",
+  "version": "3.0.0-rc.3",
   "dependencies": {
 
   },
diff --git a/library/src/main/ets/utils/FileCache.ets b/library/src/main/ets/utils/FileCache.ets
index f8439eb..19a616c 100644
--- a/library/src/main/ets/utils/FileCache.ets
+++ b/library/src/main/ets/utils/FileCache.ets
@@ -209,10 +209,10 @@ export class FileCache {
         break
       }
       let delkey = this.lruCache.keys()[0]
-      let data: ArrayBuffer | undefined = FileUtils.getInstance().readFileSync(this.path + delkey)
-      if (data !== undefined) {
+      let remove: number | undefined = this.lruCache.remove(delkey)
+      if (remove !== undefined) {
         FileUtils.getInstance().deleteFile(this.path + delkey)
-        this.removeMemorySize(data)
+        this.removeMemorySize(remove)
       }
       this.lruCache.remove(delkey)
     }
diff --git a/library/src/main/ets/utils/FileUtils.ets b/library/src/main/ets/utils/FileUtils.ets
index 1b8e94b..5f41dd1 100644
--- a/library/src/main/ets/utils/FileUtils.ets
+++ b/library/src/main/ets/utils/FileUtils.ets
@@ -57,18 +57,14 @@ export class FileUtils {
    * @param path
    * @returns
    */
-  async deleteFile(path: string): Promise<boolean> {
-    const isExist: boolean = await fs.access(path)
-    if (isExist) {
-      try {
-        await fs.unlink(path)
-      }
-      catch (err) {
-        LogUtil.error("FileUtils deleteFile failed: err msg=" + err.message + " err code=" + err.code);
-        return false
-      }
+  async deleteFile(path: string): Promise<void> {
+    // const isExist: boolean = await fs.access(path)
+    // if (isExist) {
+    try {
+      await fs.unlink(path)
+    } catch (err) {
+      LogUtil.error("FileUtils deleteFile failed: err msg=" + err.message + " err code=" + err.code);
     }
-    return true
   }
 
   /**