diff --git a/README.md b/README.md
index 1b5bc2e..a88e8c7 100644
--- a/README.md
+++ b/README.md
@@ -70,16 +70,16 @@ pip install flaxkv
 ### Usage
 
 ```python
-from flaxkv import dictdb
+from flaxkv import FlaxKV
 import numpy as np
 
-db = dictdb('test_db')
+db = FlaxKV('test_db')
 """
 Or start as a server
 >>> flaxkv run --port 8000
 
 Client call:
-db = dictdb('test_db', root_path_or_url='http://localhost:8000')
+db = FlaxKV('test_db', root_path_or_url='http://localhost:8000')
 """
 
 db[1] = 1
@@ -109,8 +109,6 @@ print(len(db))
 ### Tips
 - `flaxkv` provides performance close to native dictionary (in-memory) access as a persistent database! (See benchmark below)
 - You may have noticed that in the previous example code, `db.close()` was not used to release resources! Because all this will be automatically handled by `flaxkv`. Of course, you can also manually call db.close() to immediately release resources.
-- Since `flaxkv` saves data by buffered writing, this feature of delayed writing may not write data to the disk in time in some scenarios (such as in Jupyter),
-in this case, you can use `db.write_immediately()` to immediately trigger a write operation.
 
 ### Benchmark
 ![benchmark](.github/img/benchmark.png)
diff --git a/README_ZH.md b/README_ZH.md
index 0e2858b..0805294 100644
--- a/README_ZH.md
+++ b/README_ZH.md
@@ -73,17 +73,17 @@ pip install flaxkv
 ### 使用
 
 ```python
-from flaxkv import dictdb
+from flaxkv import FlaxKV
 import numpy as np
 
-db = dictdb('test_db')
+db = FlaxKV('test_db')
 
 """
 或者作为服务端启动
 >>> flaxkv run --port 8000
 
 客户端调用:
-db = dictdb('test_db', root_path_or_url='http://localhost:8000')
+db = FlaxKV('test_db', root_path_or_url='http://localhost:8000')
 """
 
 db[1] = 1
@@ -115,8 +115,6 @@ print(len(db))
 
 - `flaxkv`作为持久化数据库提供了接近原生字典(内存)存取的性能！(见下文benchmark)
 - 也许你注意到在前面的示例代码中并没有使用到`db.close()`来进行资源释放！因为这一切都将被`flaxkv`自动处理。 当然也可以手动调用 `db.close()` 来立即释放资源
-- 由于`flaxkv`通过缓冲写入的方式来保存数据，这种延迟写入的特性在一些场景(如jupyter中)下将不能及时将数据写入磁盘，
-此时可使用`db.write_immediately()`来立即触发写入操作。
 
 ### Benchmark
 ![benchmark](.github/img/benchmark.png)