From 9d5462ca04457cf8f24b0533331ac06091530356 Mon Sep 17 00:00:00 2001
From: Jeff Mitchell <jeff@hashicorp.com>
Date: Fri, 28 Oct 2016 12:55:56 -0400
Subject: [PATCH] Don't cache physical responses when thre was an error (#2040)

---
 physical/cache.go | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/physical/cache.go b/physical/cache.go
index b184fbcee..d10ddd960 100644
--- a/physical/cache.go
+++ b/physical/cache.go
@@ -45,7 +45,9 @@ func (c *Cache) Purge() {
 
 func (c *Cache) Put(entry *Entry) error {
 	err := c.backend.Put(entry)
-	c.lru.Add(entry.Key, entry)
+	if err == nil {
+		c.lru.Add(entry.Key, entry)
+	}
 	return err
 }
 
@@ -78,7 +80,9 @@ func (c *Cache) Get(key string) (*Entry, error) {
 
 func (c *Cache) Delete(key string) error {
 	err := c.backend.Delete(key)
-	c.lru.Remove(key)
+	if err == nil {
+		c.lru.Remove(key)
+	}
 	return err
 }