From fc616b5d5f883e4fc2458d27ddee1d1182a73bf7 Mon Sep 17 00:00:00 2001
From: Danny Guo <dguo@users.noreply.github.com>
Date: Tue, 10 May 2016 23:57:50 -0400
Subject: [PATCH] docs(README): add warning for key prefixing with some
 commands

---
 README.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/README.md b/README.md
index c0a6be1f..7e722cb1 100644
--- a/README.md
+++ b/README.md
@@ -348,6 +348,8 @@ This feature allows you to specify a string that will automatically be prepended
 to all the keys in a command, which makes it easier to manage your key
 namespaces.
 
+Warning: this feature won't apply to commands like [KEYS](http://redis.io/commands/KEYS) and [SCAN](http://redis.io/commands/scan) that take patterns rather than actual keys. See [#239](https://github.com/luin/ioredis/issues/239) for details.
+
 ```javascript
 var fooRedis = new Redis({ keyPrefix: 'foo:' });
 fooRedis.set('bar', 'baz');  // Actually sends SET foo:bar baz