From 54dcc4da2ff22bdb17e53dd6eac1c0bd54a20390 Mon Sep 17 00:00:00 2001
From: aeneasr <3372410+aeneasr@users.noreply.github.com>
Date: Mon, 27 Jul 2020 12:09:25 +0200
Subject: [PATCH] feat: add nocache helpers

---
 x/nocache.go | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 x/nocache.go

diff --git a/x/nocache.go b/x/nocache.go
new file mode 100644
index 00000000000..324e80c8efe
--- /dev/null
+++ b/x/nocache.go
@@ -0,0 +1,20 @@
+package x
+
+import (
+	"net/http"
+
+	"github.com/julienschmidt/httprouter"
+)
+
+// NoCache adds `Cache-Control: 0` to the response header.
+func NoCache(w http.ResponseWriter) {
+	w.Header().Set("Cache-Control", "0")
+}
+
+// NoCacheHandler wraps httprouter.Handle with `Cache-Control: 0` headers.
+func NoCacheHandler(handle httprouter.Handle) httprouter.Handle {
+	return func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
+		NoCache(w)
+		handle(w, r, ps)
+	}
+}