feat: bump v2.0.1, add CLI help usage, support fast wildcard path matching in README and tests (by AI)

README.md

@@ -11,7 +11,24 @@
 - **服务发现原生集成**：与 `@go/discover` 无缝集成，支持基于服务名的直连与负载均衡。
 - **生命周期接管**：由 `@go/starter` 接管，支持通过 `kill -SIGHUP` 触发本地全量重新同步。
 
-## 配置模型 (Redis Hash)
+## 路由匹配规则 (无需正则的高性能模式)
+
+网关底层针对高并发场景深度优化，默认支持 O(1) 级别的哈希匹配和高性能前缀匹配，**极大程度地避免了正则表达式的性能开销**。
+
+### 1. Host 域名自适应降级匹配
+网关在匹配请求的 Host 时，遵循一套人性化的自动降级回退机制，确保最灵活的配置：
+1. **精确域名+端口**: `aa.com:8080` (最高优先级)
+2. **纯域名提取**: `aa.com` (能同时适配 `aa.com:8080` 和 `aa.com:80`)
+3. **纯端口截获**: `:80` 或 `:8080` (匹配任意该端口的主机)
+4. **全局通配符**: `*` 或空字符串 `""` (兜底拦截所有未匹配请求)
+
+### 2. Path 路径极速前缀匹配
+默认情况下，非正则路径是**精确绝对匹配**。为了取代高消耗的前缀正则，网关特别引入了 `/*` 高性能通配符：
+- **精确匹配 (默认)**: `"Path": "/api"` 仅匹配完全等于 `/api` 的请求。
+- **极速前缀匹配 (带 `/*`)**: `"Path": "/api/*"` 将匹配任何以 `/api/` 开头的请求，底层直接使用原生 `strings.HasPrefix` 剥离正则损耗。
+  - *路径截取映射*: 当配置 `{"Path": "/old/*", "ToPath": "/new/*"}` 时，请求 `/old/user/1` 会被极速映射为 `/new/user/1`。
+
+*注：只有当匹配规则需要提取复杂的动态参数（如中间段 `$1` 捕获）时，才建议使用正则匹配 `^/api/([a-z]+)/xxx`。*
 
 Gateway 将配置存储在 Redis 的 Hash 结构中，并按照 **Host (域名)** 进行字段隔离，提升拉取效率和管理粒度。
 

app_test.go

@@ -35,6 +35,9 @@ func TestGateway(t *testing.T) {
 	service.Host("*").GET("/hello", func(req *service.Request) string {
 		return "hello from backend, path: " + req.RequestURI
 	})
+	service.Host("*").GET("/hello/world", func(req *service.Request) string {
+		return "hello from backend, path: " + req.RequestURI
+	})
 
 	asBackend := service.AsyncStart()
 	defer asBackend.Stop()
@@ -48,6 +51,7 @@ func TestGateway(t *testing.T) {
 	proxyRules := []service.ProxyRule{
 		{Path: "^/api/(.*)$", ToApp: "test-backend", ToPath: "/$1"},
 		{Path: "/direct", ToApp: "test-backend", ToPath: "/hello"},
+		{Path: "/v2/*", ToApp: "test-backend", ToPath: "/hello/*"},
 	}
 	rewriteRules := []service.RewriteRule{
 		{Path: "^/old-api/(.*)$", ToPath: "/api/$1"},
@@ -130,6 +134,22 @@ func TestGateway(t *testing.T) {
 		t.Fatalf("Proxy regexp failed, got: %s", body)
 	}
 
+	// ============================================
+	// 测试 2.1: 极速通配符前缀匹配 (Discover)
+	// ============================================
+	req, _ = gohttp.NewRequest("GET", "http://127.0.0.1:"+gwPort+"/v2/world?x=2", nil)
+	req.Host = "gw.test"
+	res, err = client.Do(req)
+	body = ""
+	if err == nil && res != nil {
+		b, _ := io.ReadAll(res.Body)
+		res.Body.Close()
+		body = string(b)
+	}
+	if err != nil || !strings.Contains(body, "hello from backend, path: /hello/world?x=2") {
+		t.Fatalf("Proxy wildcard failed, got: %s", body)
+	}
+
 	// ============================================
 	// 测试 3: Rewrite 后再 Proxy
 	// ============================================

main.go

@@ -12,7 +12,24 @@ func main() {
 	_ = config.Load(&GatewayConf, "gateway")
 
 	// 2. 初始化 Starter 信息
-	starter.SetAppInfo("gateway", "2.0.0")
+	starter.SetAppInfo("gateway", "2.0.1")
+	starter.SetUsage(`High-performance, event-driven dynamic API gateway.
+
+Configuration:
+  Uses env.yml or environment variables for base configuration.
+  Supports Nginx-like static routing via Proxy/Rewrite/Static declarations in yaml.
+  Supports real-time atomic hot-reloading via Redis Pub/Sub.
+
+Routing Path Matching:
+  - Exact Match (Default): Path: "/api" matches EXACTLY "/api"
+  - Fast Prefix Match: Path: "/api/*" matches any path starting with "/api/"
+  - Regex Match: Path: "^/api/(.*)$" captures groups for replacement in ToPath
+
+Host Matching (Fallback Order):
+  1. Exact Host+Port (e.g., "aa.com:8080")
+  2. Host Only (e.g., "aa.com")
+  3. Port Only (e.g., ":8080")
+  4. Global Wildcard (e.g., "*" or "")`)
 
 	// 3. 注册 Gateway 服务
 	// GatewayApp 自身实现了 starter.Service 和 starter.Reloader 接口