Added cache

Only fork markdown tho, can't cache erb.

Now also added a deploy script which runs erb

app.rb

@@ -147,14 +147,17 @@ class Sidebar
 end
 
 $sidebar = Sidebar.new
+$files_cache = {}
 def pview(file)
   body = ""
   cont = File.read(file) or return "Not found"
   if (file =~ /\.erb$/)
+    # We can't cache erb
     tp = ERB.new(cont)
     body = tp.result(binding)
   elsif (file =~ /\.md$/)
-    body = $markdown.render cont    
+    # But we can cache markdown
+    body = ($files_cache[file] ||= $markdown.render cont)
   end
   put_in_layout(body)
 end

deploy

@@ -0,0 +1,4 @@
+#!/usr/bin/sh
+
+
+RUBY_YJIT_ENABLE=1 rackup