diff --git a/basic/checkpoint.md b/basic/checkpoint.md
index f24867e..55f3ccf 100644
--- a/basic/checkpoint.md
+++ b/basic/checkpoint.md
@@ -175,10 +175,6 @@ private final HashMap<String, InternalKvState<K, ?, ?>> keyValueStatesByName;
 
 建议同时将 [managed memory](https://nightlies.apache.org/flink/flink-docs-release-1.14/zh/docs/deployment/memory/mem_setup_tm/#managed-memory) 设为0，以保证将最大限度的内存分配给 JVM 上的用户代码。
 
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 ## EmbeddedRocksDBStateBackend
 
 将正在于行的作业的状态保存到RocksDb里面。