diff --git a/doc/LRU设计.md b/doc/pkg/lru/LRU设计.md
similarity index 100%
rename from doc/LRU设计.md
rename to doc/pkg/lru/LRU设计.md
diff --git a/doc/RDB + AOF 的事务解决方案.md b/doc/pkg/lru/RDB + AOF 的事务解决方案.md
similarity index 79%
rename from doc/RDB + AOF 的事务解决方案.md
rename to doc/pkg/lru/RDB + AOF 的事务解决方案.md
index e547dfa..2348607 100644
--- a/doc/RDB + AOF 的事务解决方案.md	
+++ b/doc/pkg/lru/RDB + AOF 的事务解决方案.md	
@@ -1,5 +1,5 @@
-### RDB + AOF 的事务解决方案
-
-
-
+### RDB + AOF 的事务解决方案
+
+
+
 ![事务RDB方案](https://gitee.com/timedb/img/raw/master/images/事务RDB方案.svg)
\ No newline at end of file
diff --git a/doc/test.md b/doc/test.md
deleted file mode 100644
index e69de29..0000000
diff --git a/doc/开发规范/单元测试.md b/doc/开发规范/单元测试.md
new file mode 100644
index 0000000..6c326c7
--- /dev/null
+++ b/doc/开发规范/单元测试.md
@@ -0,0 +1,54 @@
+### 单元测试文档
+
+#### 样例
+```go
+package dao
+
+import (
+	"testing"
+
+	_ "gitee.com/timedb/wheatCache/conf"
+	"gitee.com/timedb/wheatCache/pkg/lru"
+	"gitee.com/timedb/wheatCache/pkg/proto"
+	"github.com/stretchr/testify/require"
+)
+
+// 规范1. 每个 package 应该都至少有一个单测
+
+// 规范2. 包里有公用的 mock 数据应该分离出来。
+func mockData(t *testing.T, d *Dao) {
+
+	values := []string{"1", "1.3", "abcdefg"}
+
+	for _, val := range values {
+		key := &proto.BaseKey{
+			Key: val,
+		}
+		_, err := d.Set(key, val)
+
+        // 规范3. 使用 require 包来完成单测
+		require.NoError(t, err)
+	}
+
+}
+
+// 规范4. 单元测试应该尽可能覆盖全部情况，不要使用依赖注入。
+func TestDao_Reduce(t *testing.T) {
+	lruCache := lru.NewLRUCache()
+	dao := NewDao(lruCache)
+	mockData(t, dao)
+
+	resp, err := dao.Reduce(&proto.BaseKey{Key: "1"}, 2)
+	require.NoError(t, err)
+	require.Equal(t, resp, "-1")
+
+	resp, err = dao.Reduce(&proto.BaseKey{Key: "1.3"}, 2)
+	require.NoError(t, err)
+	require.Equal(t, resp, "-0.70")
+
+	_, err = dao.Reduce(&proto.BaseKey{Key: "abcdefg"}, 2)
+	require.Error(t, err)
+}
+
+
+```
\ No newline at end of file
diff --git a/doc/开发流程.md b/doc/开发规范/开发流程.md
similarity index 100%
rename from doc/开发流程.md
rename to doc/开发规范/开发流程.md