From 57bfad4aeef57d5375c4cef789c60952fbbd1778 Mon Sep 17 00:00:00 2001
From: Kelsey Hightower <kelsey.hightower@gmail.com>
Date: Sun, 19 Oct 2014 01:21:45 -0700
Subject: [PATCH] add comments

---
 backend/backend.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/backend/backend.go b/backend/backend.go
index 7d0d56aa..82d61d29 100644
--- a/backend/backend.go
+++ b/backend/backend.go
@@ -1,12 +1,20 @@
 package backend
 
+// Response represents a response from a backend store.
 type Response struct {
 	Value []byte
 	Error error
 }
 
+// A Store is a K/V store backend that retrieves and sets, and monitors
+// data in a K/V store.
 type Store interface {
+	// Get retrieves a value from a K/V store for the provided key.
 	Get(key string) ([]byte, error)
+
+	// Set sets the provided key to value.
 	Set(key string, value []byte) error
+
+	// Watch monitors a K/V store for changes to key.
 	Watch(key string, stop chan bool) <-chan *Response
 }