diff --git a/.vitepress/sidebar/8gu/8gu.ts b/.vitepress/sidebar/8gu/8gu.ts
index d56d1b7..e2ca49b 100644
--- a/.vitepress/sidebar/8gu/8gu.ts
+++ b/.vitepress/sidebar/8gu/8gu.ts
@@ -54,7 +54,7 @@ export function BaGu(): DefaultTheme.SidebarItem[] {
           collapsed: false,
           items: [
             { text: 'Kubernetes', link: '/8gu/cloud-native/k8s/' },
-            // { text: 'CAP', link: '/8gu/cloud-native/cap' },
+            { text: 'CAP', link: '/8gu/cloud-native/cap' },
           ]
         },
         {
diff --git a/.vitepress/sidebar/8gu/cloud-native/cap.ts b/.vitepress/sidebar/8gu/cloud-native/cap.ts
new file mode 100644
index 0000000..00c88e8
--- /dev/null
+++ b/.vitepress/sidebar/8gu/cloud-native/cap.ts
@@ -0,0 +1,13 @@
+import { type DefaultTheme } from 'vitepress'
+import { BaGu } from '../8gu'
+
+export function BaGuCAP(): DefaultTheme.SidebarItem[] {
+  return [
+    ...BaGu(),
+    {
+      text: 'CAP',
+      link: '/8gu/cloud-native/cap',
+      items: []
+    },
+  ]
+}
diff --git a/.vitepress/sidebar/8gu/cloud-native/index.ts b/.vitepress/sidebar/8gu/cloud-native/index.ts
index 0025506..103644a 100644
--- a/.vitepress/sidebar/8gu/cloud-native/index.ts
+++ b/.vitepress/sidebar/8gu/cloud-native/index.ts
@@ -1,8 +1,9 @@
 import { type DefaultTheme } from 'vitepress'
 import { BaGuK8S } from './k8s'
-
+import { BaGuCAP } from './cap'
 export function BaGuCloudNative(): DefaultTheme.SidebarMulti {
   return {
+    '/8gu/cloud-native/cap': BaGuCAP(),
     '/8gu/cloud-native/k8s': BaGuK8S(),
   }
 }
diff --git a/8gu/cloud-native/cap.md b/8gu/cloud-native/cap.md
index e0a4189..0437023 100644
--- a/8gu/cloud-native/cap.md
+++ b/8gu/cloud-native/cap.md
@@ -1,6 +1,10 @@
-# xxx
+# 分布式服务环境下的事务处理机制
 
 https://javaguide.cn/distributed-system/protocol/cap-and-base-theorem.html
 
 - 幂等设计
-- 并发事务可见性 https://www.bilibili.com/video/BV1uv4y1S7tE/?spm_id_from=333.999.0.0&vd_source=ddc8289a36a2bf501f48ca984dc0b3c1
\ No newline at end of file
+- 并发事务可见性 https://www.bilibili.com/video/BV1uv4y1S7tE/?spm_id_from=333.999.0.0&vd_source=ddc8289a36a2bf501f48ca984dc0b3c1
+
+## Reference
+
+- [分布式事务](https://icyfenix.cn/architect-perspective/general-architecture/transaction/distributed.html)
\ No newline at end of file
diff --git a/8gu/language/c/index.md b/8gu/language/c/index.md
new file mode 100644
index 0000000..5ab31ec
--- /dev/null
+++ b/8gu/language/c/index.md
@@ -0,0 +1,10 @@
+# C
+
+## 保持 C 的精神
+
+- 信任程序员
+- 不要妨碍程序员做需要做的事
+- 保持语言精炼简单
+- 只提供一种方法执行一项操作
+- 让程序运行更快，即使不能保证其可移植性
+