perf: add fast match path for "*" route

Author: dougwilson

History.md

@@ -62,6 +62,7 @@ unreleased
     - Use `res.getHeaderNames()` when available
     - Use `res.headersSent` when available
     - deps: [email protected]
+  * perf: add fast match path for `*` route
   * perf: improve `req.ips` performance
 
 4.14.1 / 2017-01-28

lib/router/layer.js

@@ -44,9 +44,9 @@ function Layer(path, options, fn) {
   this.path = undefined;
   this.regexp = pathRegexp(path, this.keys = [], opts);
 
-  if (path === '/' && opts.end === false) {
-    this.regexp.fast_slash = true;
-  }
+  // set fast path flags
+  this.regexp.fast_star = path === '*'
+  this.regexp.fast_slash = path === '/' && opts.end === false
 }
 
 /**
@@ -111,13 +111,20 @@ Layer.prototype.match = function match(path) {
   var match
 
   if (path != null) {
+    // fast path non-ending match for / (any path matches)
     if (this.regexp.fast_slash) {
-      // fast path non-ending match for / (everything matches)
       this.params = {}
       this.path = ''
       return true
     }
 
+    // fast path for * (everything matched in a param)
+    if (this.regexp.fast_star) {
+      this.params = {'0': decode_param(path)}
+      this.path = path
+      return true
+    }
+
     // match the path
     match = this.regexp.exec(path)
   }