Add cache parameter

src/server.js

@@ -22,6 +22,7 @@ import { serve_font } from './serve_font.js';
 import { getTileUrls, getPublicUrl } from './utils.js';
 
 import { fileURLToPath } from 'url';
+import nocache from 'nocache';
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
 const packageJson = JSON.parse(
@@ -83,6 +84,13 @@ function start(opts) {
   }
 
   const options = config.options || {};
+
+  const cacheFlag = options.cache || false;
+  if (!cacheFlag) {
+    console.log('Cache disabled');
+    app.use(nocache());
+  }
+
   const paths = options.paths || {};
   options.paths = paths;
   paths.root = path.resolve(