优化: Keep-Alive/rate-limiter/dead-code清理 + deploy.sh蓝绿自动检测 + 压测文档

src/main.rs

@@ -324,6 +324,8 @@ async fn main() -> std::io::Result<()> {
             match HttpServer::new(move || {
                 create_server_config(pool_clone.clone(), http_client_clone.clone(), app_state_clone.clone())
             })
+            .keep_alive(std::time::Duration::from_secs(30))
+            .backlog(1024)
             .bind_openssl(&addr, ssl_builder)
             {
                 Ok(s) => {
@@ -345,6 +347,8 @@ async fn main() -> std::io::Result<()> {
             match HttpServer::new(move || {
                 create_server_config(pool_clone.clone(), http_client_clone.clone(), app_state_clone.clone())
             })
+            .keep_alive(std::time::Duration::from_secs(30))
+            .backlog(1024)
             .bind(&addr)
             {
                 Ok(s) => {