diff --git a/basic/README.md b/basic/README.md
index d56ee3a..d8f9ad3 100644
--- a/basic/README.md
+++ b/basic/README.md
@@ -7,6 +7,7 @@
 - [slot相关](./slot相关.md)
 - [Flink基本架构](./Flink基本架构.md)
 - [旁路输出](./旁路输出.md)
-
-
+- [BlobServer](./blobServer.md)
+- [广播](./broadcast.md)
+- [Checkpoint](./checkpoint.md)
 
diff --git a/basic/checkpoint.md b/basic/checkpoint.md
new file mode 100644
index 0000000..a17bb24
--- /dev/null
+++ b/basic/checkpoint.md
@@ -0,0 +1,79 @@
+
+# 常见报错
+
+## The maximum number of queued checkpoint requests exceeded 
+
+未完成的Checkpoint排队超过了1000个。需要查看作业是否存在被压等。一般情况下作业被压会导致checkpoint失败。
+
+
+## Periodic checkpoint scheduler is shut down 
+
+
+
+## The minimum time between checkpoints is still pending 
+
+
+## Not all required tasks are currently running 
+
+部分算子任务已经完成，但是如果在维表join场景下，flink 1.13版本之前可能无法恢复checkpoint 
+
+
+
+## An Exception occurred while triggering the checkpoint. 
+
+
+## Asynchronous task checkpoint failed.
+
+
+## The checkpoint was aborted due to exception of other subtasks sharing the ChannelState file 
+
+
+## Checkpoint expired before completing 
+
+
+## Checkpoint has been subsumed
+
+
+## Checkpoint was declined
+
+
+## Checkpoint was declined (tasks not ready) 
+
+
+## Checkpoint was declined (task is closing) 
+
+
+## Checkpoint was canceled because a barrier from newer checkpoint was received
+
+
+## Task received cancellation from one of its inputs 
+
+
+## Checkpoint was declined because one input stream is finished 
+
+
+## CheckpointCoordinator shutdown 
+
+
+## Checkpoint Coordinator is suspending 
+
+
+## FailoverRegion is restarting 
+
+
+## Task has failed 
+
+
+## Task local checkpoint failure 
+
+
+## Unknown task for the checkpoint to notify 
+
+
+## Failure to finalize checkpoint 
+
+
+## Trigger checkpoint failure 
+
+
+