Add Ring GZIP middleware. MAKES THINGS FASTER EVEN RUNNING LOCALLY <3

project.clj

@@ -16,6 +16,7 @@
                  [org.clojure/tools.logging "0.3.1"]                  ; logging framework
                  [org.clojure/tools.macro "0.1.5"]                    ; tools for writing macros
                  [org.clojure/tools.trace "0.7.8"]                    ; "tracing macros/fns to help you see what your code is doing"
+                 [amalloy/ring-gzip-middleware "0.1.3"]               ; Ring middleware to GZIP responses if client can handle it
                  [cheshire "5.4.0"]                                   ; fast JSON encoding (used by Ring JSON middleware)
                  [clj-http-lite "0.2.1"]                              ; HTTP client; lightweight version of clj-http that uses HttpURLConnection instead of Apache
                  [clj-time "0.9.0"]                                   ; library for dealing with date/time

src/metabase/core.clj

@@ -12,6 +12,7 @@
             [metabase.util :as util]
             [ring.adapter.jetty :as ring-jetty]
             (ring.middleware [cookies :refer [wrap-cookies]]
+                             [gzip :refer [wrap-gzip]]
                              [json :refer [wrap-json-response
                                            wrap-json-body]]
                              [keyword-params :refer [wrap-keyword-params]]
@@ -32,7 +33,7 @@
       auth/wrap-sessionid     ; looks for a Metabase sessionid and assocs as :metabase-sessionid
       wrap-cookies            ; Parses cookies in the request map and assocs as :cookies
       wrap-session            ; reads in current HTTP session and sets :session/key
-      ))
+      wrap-gzip))             ; GZIP response if client can handle it
 
 
 (defn init