static server caching

- adds caching to static-server

CHANGELOG.md

@@ -1,5 +1,6 @@
 # Unreleased
 
+- adds caching to static-server 
 - abstract models into their own files and their own collections
 - fixes the middleware request logger
 - fixes CLI responses

lib/helpers/static-server.js

@@ -20,6 +20,8 @@ const map = {
   '.doc': 'application/msword'
 };
 
+const cache = {};
+
 http.createServer((req, res) => {
   let { url } = req;
 
@@ -30,6 +32,11 @@ http.createServer((req, res) => {
   const parsedUrl = Url.parse(url);
   let pathname = `.${parsedUrl.pathname}`;
 
+  if(cache[pathname]) {
+    res.setHeader('Content-Type', cache[pathname]['Content-Type']);
+    return res.end(cache[pathname]['data']);
+  }
+
   const ext = path.parse(pathname).ext;
 
   fs.exists(pathname, (exist) => {
@@ -46,8 +53,12 @@ http.createServer((req, res) => {
         res.statusCode = 500;
         res.end(`Error getting the file: ${err}.`);
       } else {
+        cache[pathname] = {
+          'Content-Type': map[ext] || 'text/plain',
+          data
+        };
         // if the file is found, set Content-type and send data
-        res.setHeader('Content-type', map[ext] || 'text/plain');
+        res.setHeader('Content-Type', map[ext] || 'text/plain');
         res.end(data);
       }
     });