diff --git a/product/en/docs-mogdb/v3.1/about-mogdb/usage-limitations.md b/product/en/docs-mogdb/v3.1/about-mogdb/usage-limitations.md
index 59515620cf5f19fc7397fe1e5be0711de9d0b5da..f432224d1973cf32a32e4022f9b61ff7e055abc6 100644
--- a/product/en/docs-mogdb/v3.1/about-mogdb/usage-limitations.md
+++ b/product/en/docs-mogdb/v3.1/about-mogdb/usage-limitations.md
@@ -20,7 +20,7 @@ This document describes the common usage limitations of MogDB.
 | Number of indexes in a single table       | Unlimited                                            |
 | Number of columns in a compound index     | 32                                                   |
 | Number of constraints in a single table   | Unlimited                                            |
-| Number of concurrent connections          | 10000                                                |
+| Number of concurrent connections          | 262143                                               |
 | Number of partitions in a partition table | 1048575                                              |
 | Size of a single partition                | 32 TB                                                |
 | Number of rows in a single partition      | 2<sup>55</sup>                                       |
diff --git a/product/zh/docs-mogdb/v3.1/about-mogdb/usage-limitations.md b/product/zh/docs-mogdb/v3.1/about-mogdb/usage-limitations.md
index 83b3f61a125913551cb4a2e7d6b21146b84c23eb..ca8b9e32078cf586f7a205b1dcac88664d56a33d 100644
--- a/product/zh/docs-mogdb/v3.1/about-mogdb/usage-limitations.md
+++ b/product/zh/docs-mogdb/v3.1/about-mogdb/usage-limitations.md
@@ -15,13 +15,13 @@ MogDB 具有如下使用限制：
 | 单表大小               | 32TB                               |
 | 单行数据大小           | 1GB                                |
 | 每条记录单个字段的大小 | 1GB                                |
-| 单表记录数             | 281474976710656（2<sup>48</sup>）           |
+| 单表记录数             | 281474976710656（2<sup>48</sup>）  |
 | 单表列数               | 250~1600（随字段类型不同会有变化） |
 | 单表中的索引个数       | 无限制                             |
 | 复合索引包含列数       | 32                                 |
 | 单表约束个数           | 无限制                             |
-| 并发连接数             | 10000                              |
+| 并发连接数             | 262143                             |
 | 分区表的分区个数       | 1048575                            |
 | 分区表的单个分区大小   | 32TB                               |
-| 分区表的单个分区记录数 | 2<sup>55</sup>                              |
+| 分区表的单个分区记录数 | 2<sup>55</sup>                     |
 | SQL文本最大长度        | 1048576字节（1MB）                 |
\ No newline at end of file
diff --git a/src/components/footer.js b/src/components/footer.js
index b7f37cb34d61be7118fed91780084f9ec07d0752..75acfb3aa56021a3899842cd54d4f966008ba6cb 100644
--- a/src/components/footer.js
+++ b/src/components/footer.js
@@ -6,7 +6,7 @@ import React from "react"
 const Footer = () => {
   return (
     <footer className="footer-container">
-      Copyright © 2009-2022 www.enmotech.com All rights reserved.
+      Copyright © 2011-2022 www.enmotech.com All rights reserved.
     </footer>
   )
 }