diff --git a/ticdc/ticdc-changefeed-config.md b/ticdc/ticdc-changefeed-config.md
index f1cf0d869aa89..3fc36ee435902 100644
--- a/ticdc/ticdc-changefeed-config.md
+++ b/ticdc/ticdc-changefeed-config.md
@@ -220,6 +220,9 @@ flush-worker-num = 8
 # The behavior to compress redo log files.
 # Available options are "" and "lz4". The default value is "", which means no compression.
 compression = ""
+# The concurrency for uploading a single redo file.
+# The default value is 1, which means concurrency is disabled.
+flush-concurrency = 1
 
 [integrity]
 # Whether to enable the checksum validation for single-row data. The default value is "none", which means to disable the feature. Value options are "none" and "correctness".
diff --git a/ticdc/ticdc-open-api-v2.md b/ticdc/ticdc-open-api-v2.md
index d3509cc36e341..d38f8cffef0a4 100644
--- a/ticdc/ticdc-open-api-v2.md
+++ b/ticdc/ticdc-open-api-v2.md
@@ -290,6 +290,8 @@ The `consistent` parameters are described as follows:
 | `use_file_backend` | `BOOL` type. Specifies whether to store the redo log in a local file. (Optional) |
 | `encoding_worker_num` | `INT` type. The number of encoding and decoding workers in the redo module. (Optional)             |
 | `flush_worker_num`    | `INT` type. The number of flushing workers in the redo module. (Optional)             |
+| `compression`         | `STRING` type. The behavior to compress redo log files. Available options are `""` and `"lz4"`. The default value is `""`, which means no compression. (Optional) |
+| `flush_concurrency`   | `INT` type. The concurrency for uploading a single file. The default value is `1`, which means concurrency is disabled. (Optional)                                     |
 
 The `filter` parameters are described as follows: