diff --git a/README.md b/README.md
index 637d779..e809cc1 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,16 @@
 # perc
 
-Better Werc
\ No newline at end of file
+Better Werc
+
+
+# TODO
+
+- [ ] Documentation
+- [ ] Adding expiry to cache files.
+- [ ] Adding support for [Slim](https://slim-template.github.io/) Template
+- [ ] Support for dirrent layout files for subdirectory.
+- [ ] Adding search.  From what I can find, there are several good tools aviable that
+      index the site, e.g. [sphinix](https://sphinxsearch.com/), [Apache
+      Lucene](https://lucene.apache.org/), and [Xapian](https://xapian.org/)
+
+
diff --git a/app.rb b/app.rb
index 95cf1a1..3f5e0cb 100644
--- a/app.rb
+++ b/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
diff --git a/deploy b/deploy
new file mode 100755
index 0000000..cc529f8
--- /dev/null
+++ b/deploy
@@ -0,0 +1,4 @@
+#!/usr/bin/sh
+
+
+RUBY_YJIT_ENABLE=1 rackup
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