diff --git a/publisher/src/net/deertopia/publisher/cached_file.clj b/publisher/src/net/deertopia/publisher/cached_file.clj
index 515271d..995b28e 100644
--- a/publisher/src/net/deertopia/publisher/cached_file.clj
+++ b/publisher/src/net/deertopia/publisher/cached_file.clj
@@ -20,5 +20,6 @@
   (when (or (not *use-cache?*) stale?)
     (let [r (compute)]
       (assert (string? r))
+      (fs/create-dirs (fs/parent file))
       (spit file r)))
   file)
diff --git a/publisher/src/net/deertopia/publisher/server.clj b/publisher/src/net/deertopia/publisher/server.clj
index e1012eb..df4beb4 100644
--- a/publisher/src/net/deertopia/publisher/server.clj
+++ b/publisher/src/net/deertopia/publisher/server.clj
@@ -24,6 +24,8 @@
             [babashka.fs :as fs]
             [aero.core :as aero]))
 
+(def ^:const html-dir (-> cfg/*cfg* ::publisher/state-directory))
+
 
 ;;; Routes
 
@@ -42,11 +44,35 @@
       response/response
       (response/content-type "text/html")))
 
-(defn node-by-slug [{{{:keys [slug]} :path} :parameters}]
-  (let [html (-> slug slug/from-string roam/get-node
-                 roam/org-file doerg-render/to-html)]
-    (-> html response/response
-        (response/content-type "text/html"))))
+(defn- html-dir []
+  (-> cfg/*cfg* ::publisher/state-directory (fs/file "html")))
+
+(defn not-found [req]
+  (response/not-found "not found"))
+
+(defn org-file->html-file [org-file]
+  (fs/file (html-dir)
+           (-> org-file
+               fs/file-name
+               (fs/strip-ext {:ext "org"})
+               (str ".html"))))
+
+(defn node-by-slug [{{:keys [slug]} :path-params :as req}]
+  (if-some [node (some-> slug slug/from-string roam/get-node)]
+    (let [org-file (roam/org-file node)
+          html-file (org-file->html-file org-file)]
+      (cached-file/cached-file
+       :file html-file
+       :stale? (cached-file/newer-than? org-file html-file)
+       :compute #(doerg-render/to-html org-file))
+      (-> (str html-file)
+          response/file-response
+          (response/content-type "text/html")))
+    (not-found req))
+  #_(let [html (-> slug slug/from-string roam/get-node
+                   roam/org-file doerg-render/to-html)]
+      (-> html response/response
+          (response/content-type "text/html"))))
 
 (defn node-by-id [req]
   (hello req))
@@ -64,9 +90,7 @@
   (reitit.ring/router
    #{["/" {:get hello}]
      ["/n/:slug"
-      {:get {:handler #'node-by-slug
-             :parameters
-             {:path {:slug ::slug/slug}}}}]
+      {:get {:handler #'node-by-slug}}]
      ["/id/:id" {:get #'node-by-id}]}
    {:validate reitit.spec/validate
     :exception reitit.dev.pretty/exception
diff --git a/publisher/test/net/deertopia/publisher/server_test.clj b/publisher/test/net/deertopia/publisher/server_test.clj
index 89e4431..9e8ff4b 100644
--- a/publisher/test/net/deertopia/publisher/server_test.clj
+++ b/publisher/test/net/deertopia/publisher/server_test.clj
@@ -3,22 +3,27 @@
             [reitit.ring]
             [clojure.test :as t]
             [clojure.set :as set]
-            [net.deertopia.publisher.server :as server]
             [net.deertopia.publisher.config :as cfg]
             [net.deertopia.publisher :as-alias publisher]))
 
 (t/deftest server-is-running
   ;; 서버가 벌써 시작한 다음에 이 테스트 하면 잘못됩니다.
-  (assert (not= :running (server/status)))
-  (server/start!)
-  (t/is (= :running (server/status)))
-  (server/stop!))
+  (assert (not= :running (sut/status)))
+  (sut/start!)
+  (t/is (= :running (sut/status)))
+  (sut/stop!))
 
 (t/deftest can-get-real-server-root
   ;; 서버가 벌써 시작한 다음에 이 테스트 하면 잘못됩니다.
-  (assert (not= :running (server/status)))
-  (server/start!)
+  (assert (not= :running (sut/status)))
+  (sut/start!)
   (t/is (->> (format "http://localhost:%d" (::publisher/port cfg/*cfg*))
              slurp
              string?))
-  (server/stop!))
+  (sut/stop!))
+
+(t/deftest get-nonexistent-node
+  (t/is (= 404
+           (-> {:request-method :get
+                :uri "/n/68XqhHerTWCbE--RYLEdHw"}
+               sut/app :status))))