From 3107c90ec9ec9686ee6a1d36c7a61eff12aaacb3 Mon Sep 17 00:00:00 2001
From: Ery Lee <ery.lee@gmail.com>
Date: Thu, 5 Mar 2015 15:12:56 +0800
Subject: [PATCH] add sys

---
 doc/systopics.md | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 doc/systopics.md

diff --git a/doc/systopics.md b/doc/systopics.md
new file mode 100644
index 000000000..8d7166a31
--- /dev/null
+++ b/doc/systopics.md
@@ -0,0 +1,34 @@
+# eMQTT $SYS Topics
+
+## Version
+
+$SYS/broker/version
+
+## Uptime
+
+$SYS/broker/uptime
+
+## Recevied and Sent
+
+$SYS/broker/bytes/received
+$SYS/broker/bytes/sent
+
+$SYS/broker/packets/received
+$SYS/broker/packets/sent
+
+$SYS/broker/messages/received
+$SYS/broker/messages/sent
+$SYS/broker/messages/retained
+$SYS/broker/messages/stored
+$SYS/broker/messages/dropped
+
+## Client Presence
+
+$SYS/broker/clients/connected
+$SYS/broker/clients/disconnected
+
+$SYS/broker/clients/${clientId}/presences/online
+$SYS/broker/clients/${clientId}presences/offline
+
+
+