diff --git a/.gitignore b/.gitignore
index ee21f4b..363aad3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,5 +2,6 @@
 *.log
 restart.txt
 public/gems
+public/api
 public/quick
-*.gz
\ No newline at end of file
+*.gz
diff --git a/rubygems_proxy.rb b/rubygems_proxy.rb
index 5e77d1e..5fb27dd 100644
--- a/rubygems_proxy.rb
+++ b/rubygems_proxy.rb
@@ -2,6 +2,7 @@
 require "fileutils"
 require "logger"
 require "erb"
+require 'digest/sha1'
 
 class RubygemsProxy
   attr_reader :env
@@ -16,11 +17,11 @@ def initialize(env)
   end
 
   def run
-    logger.info "#{env["REQUEST_METHOD"]} #{env["PATH_INFO"]}"
+    logger.info "#{env["REQUEST_METHOD"]} #{env["REQUEST_URI"]}"
 
     return update_specs if env["REQUEST_METHOD"] == "DELETE"
 
-    case env["PATH_INFO"]
+    case env["REQUEST_URI"]
     when "/"
       [200, {"Content-Type" => "text/html"}, [erb(:index)]]
     else
@@ -36,7 +37,7 @@ def erb(view)
   end
 
   def server_url
-    env["rack.url_scheme"] + "://" + File.join(env["SERVER_NAME"], env["PATH_INFO"])
+    env["rack.url_scheme"] + "://" + File.join(env["SERVER_NAME"], env["REQUEST_URI"])
   end
 
   def rubygems_url(gemname)
@@ -106,8 +107,8 @@ def save(contents)
 
   def cached?
     case File.basename(filepath)
-    when /^specs\./
-      File.exist?(filepath) && (Time.now - File.mtime(filepath)).to_i < 84600
+    when /^specs\./, /^dependencies___/
+      File.file?(filepath) && (Time.now - File.mtime(filepath)).to_i < 84600
     when /\.gz$/
       false
     else
@@ -116,19 +117,21 @@ def cached?
   end
 
   def specs?
-    env["PATH_INFO"] =~ /specs\..+\.gz$/
+    env["REQUEST_URI"] =~ /specs\..+\.gz$/
   end
 
   def filepath
     if specs?
       File.join(root_dir, env["PATH_INFO"])
     else
-      File.join(cache_dir, env["PATH_INFO"])
+      name = env["PATH_INFO"]
+      name = "#{name}___#{Digest::SHA512.hexdigest env["QUERY_STRING"]}" unless env["QUERY_STRING"].to_s == ''
+      File.join(cache_dir, name)
     end
   end
 
   def url
-    File.join("http://rubygems.org", env["PATH_INFO"])
+    File.join("http://rubygems.org", env["REQUEST_URI"])
   end
 
   def update_specs