update reame

README.md

@@ -283,19 +283,21 @@ sub := root.Get("key3").Index(2).Int64() // == 3
 **Tip**: since `Index()` uses offset to locate data, which is much faster than scanning like `Get()`, we suggest you use it as much as possible. And sonic also provides another API `IndexOrGet()` to underlying use offset as well as ensure the key is matched.
 
 #### SearchOption
+
 `Searcher` provides some options for user to meet different needs:
+
 ```go
 opts := ast.SearchOption{ CopyReturn: true ... }
 val, err := sonic.GetWithOptions(JSON, opts, "key")
 ```
+
 - CopyReturn
 Indicate the searcher to copy the result JSON string instead of refer from the input. This can help to reduce memory usage if you cache the results
 - ConcurentRead
 Since `ast.Node` use `Lazy-Load` design, it doesn't support Concurrently-Read by default. If you want to read it concurrently, please specify it.
 - ValidateJSON
 Indicate the searcher to validate the entire JSON. This option is enabled by default, which slow down the search speed a little.
 
-
 #### Set/Unset
 
 Modify the json content by Set()/Unset()
@@ -314,6 +316,7 @@ println(alias1 == alias2) // true
 exist, err := root.UnsetByIndex(1) // exist == true
 println(root.Get("key4").Check()) // "value not exist"
 ```
+
 #### Serialize
 
 To encode `ast.Node` as json, use `MarshalJson()` or `json.Marshal()` (MUST pass the node's pointer)
@@ -380,7 +383,9 @@ type Visitor interface {
 See [ast/visitor.go](https://github.com/bytedance/sonic/blob/main/ast/visitor.go) for detailed usage. We also implement a demo visitor for `UserNode` in [ast/visitor_test.go](https://github.com/bytedance/sonic/blob/main/ast/visitor_test.go).
 
 ## Compatibility
+
 For developers who want to use sonic to meet diffirent scenarios, we provide some integrated configs as `sonic.API`
+
 - `ConfigDefault`: the sonic's default config (`EscapeHTML=false`,`SortKeys=false`...) to run sonic fast meanwhile ensure security.
 - `ConfigStd`: the std-compatible config (`EscapeHTML=true`,`SortKeys=true`...)
 - `ConfigFastest`: the fastest config (`NoQuoteTextMarshaler=true`) to run on sonic as fast as possible.
@@ -474,11 +479,14 @@ For better performance, in previous case the `ast.Visitor` will be the better ch
 But `ast.Visitor` is not a very handy API. You might need to write a lot of code to implement your visitor and carefully maintain the tree hierarchy during decoding. Please read the comments in [ast/visitor.go](https://github.com/bytedance/sonic/blob/main/ast/visitor.go) carefully if you decide to use this API.
 
 ### Buffer Size
+
 Sonic use memory pool in many places like `encoder.Encode`, `ast.Node.MarshalJSON` to improve performace, which may produce more memory usage (in-use) when server's load is high. See [issue 614](https://github.com/bytedance/sonic/issues/614). Therefore, we introduce some options to let user control the behavior of memory pool. See [option](https://pkg.go.dev/github.com/bytedance/[email protected]/option#pkg-variables) package.
 
 ### Faster JSON skip
-For compatibility. Sonic use FSM scanning to  validate JSON when decoding raw JSON or encoding `json.Marshaler`, which is much slower than SIMD-implemented skipping. If user has many redundant JSON value and DO NOT NEED to strictly validate JSON correctness, you can enable below options:
-- `Config.NoValidateSkipJSON`: for faster skipping JSON when decoding, such as unknown fields, mismatched values, and redundant array elements
+
+For security, sonic use [FSM](native/skip_one.c) algorithm to  validate JSON when decoding raw JSON or encoding `json.Marshaler`, which is much slower (1~10x) than [SIMD-searching-pair](native/skip_one_fast.c) algorithm. If user has many redundant JSON value and DO NOT NEED to strictly validate JSON correctness, you can enable below options:
+
+- `Config.NoValidateSkipJSON`: for faster skipping JSON when decoding, such as unknown fields, json.Unmarshaler(json.RawMessage), mismatched values, and redundant array elements
 - `Config.NoValidateJSONMarshaler`: avoid validating JSON when encoding `json.Marshaler`
 - `SearchOption.ValidateJSON`: indicates if validate located JSON value when `Get`
 

README_ZH_CN.md

@@ -283,11 +283,14 @@ sub := root.Get("key3").Index(2).Int64() // == 3
 **注意**：由于 `Index()` 使用偏移量来定位数据，比使用扫描的 `Get()` 要快的多，建议尽可能的使用 `Index` 。 Sonic 也提供了另一个 API， `IndexOrGet()` ，以偏移量为基础并且也确保键的匹配。
 
 #### 查找选项
+
 `ast.Searcher`提供了一些选项，以满足用户的不同需求:
+
 ```
 opts:= ast.SearchOption{CopyReturn: true…}
 Val, err:= sonic。gettwithoptions (JSON, opts， "key")
 ```
+
 - CopyReturn
 指示搜索器复制结果JSON字符串，而不是从输入引用。如果用户缓存结果，这有助于减少内存使用
 - ConcurentRead
@@ -380,7 +383,9 @@ type Visitor interface {
 详细用法参看 [ast/visitor.go](https://github.com/bytedance/sonic/blob/main/ast/visitor.go)，我们还为 `UserNode` 实现了一个示例 `ast.Visitor`，你可以在 [ast/visitor_test.go](https://github.com/bytedance/sonic/blob/main/ast/visitor_test.go) 中找到它。
 
 ## 兼容性
+
 对于想要使用sonic来满足不同场景的开发人员，我们提供了一些集成配置:
+
 - `ConfigDefault`: sonic的默认配置 (`EscapeHTML=false`， `SortKeys=false`…) 保证性能同时兼顾安全性。
 - `ConfigStd`: 与 `encoding/json` 保证完全兼容的配置
 - `ConfigFastest`: 最快的配置(`NoQuoteTextMarshaler=true...`) 保证性能最优但是会缺少一些安全性检查（validate UTF8 等）
@@ -472,8 +477,17 @@ go someFunc(user)
 但是，`ast.Visitor` 并不是一个很易用的 API。你可能需要写大量的代码去实现自己的 `ast.Visitor`，并且需要在解析过程中仔细维护树的层级。如果你决定要使用这个 API，请先仔细阅读 [ast/visitor.go](https://github.com/bytedance/sonic/blob/main/ast/visitor.go) 中的注释。
 
 ### 缓冲区大小
+
 Sonic在许多地方使用内存池，如`encoder.Encode`, `ast.Node.MarshalJSON`等来提高性能，这可能会在服务器负载高时产生更多的内存使用(in-use)。参见[issue 614](https://github.com/bytedance/sonic/issues/614)。因此，我们引入了一些选项来让用户配置内存池的行为。参见[option](https://pkg.go.dev/github.com/bytedance/[email protected]/option#pkg-variables)包。
 
+### 更快的 JSON Skip
+
+为了安全起见，在跳过原始JSON 时，sonic decoder 默认使用[FSM](native/skip_one.c)算法扫描来跳过同时校验 JSON。它相比[SIMD-searching-pair](native/skip_one_fast.c)算法跳过要慢得多(1~10倍)。如果用户有很多冗余的JSON值，并且不需要严格验证JSON的正确性，你可以启用以下选项:
+
+- `Config.NoValidateSkipJSON`: 用于在解码时更快地跳过JSON，例如未知字段，`json.RawMessage`，不匹配的值和冗余的数组元素等
+- `Config.NoValidateJSONMarshaler`: 编码JSON时避免验证JSON。封送拆收器
+- `SearchOption.ValidateJSON`: 指示当`Get`时是否验证定位的JSON值
+
 ## 社区
 
 Sonic 是 [CloudWeGo](https://www.cloudwego.io/) 下的一个子项目。我们致力于构建云原生生态系统。