Push notifications
A session for developers
on a way to push data to
mobiles
Dale Lane
dalelane.co.uk/blog

Who are you?
http://www.morguefile.com/archive/display/181197

Who am I?

http://www.flickr.com/photos/johnseb/2457508491/

http://www.flickr.com/photos/audiinsperation/2860226817/
Polling is
bad
Push is
good

http://www.flickr.com/photos/chanc/1389379381/

http://www.flickr.com/photos/dushaun/3112631370/

http://www.flickr.com/photos/hippie/2475795533/

http://www.flickr.com/photos/hugosimmelink/2252095723/

http://www.flickr.com/photos/amagill/3366720659/

http://www.flickr.com/photos/shawdm/35011861/

message
broker
“publish”
MQTT MQTT
client client

message
broker
MQTT MQTT
client client

topic
payload

message
broker
“subscribe”
Flight Times/LHR/Air Freedom/Arrivals/Flight 1024
MQTT MQTT
client client

message
broker
“publish”
Flight Times/LHR/Air Freedom/Arrivals/Flight 512
MQTT MQTT
client client
Subscribed to:
Flight Times/LHR/Air Freedom/Arrivals/Flight 1024

message
broker
“publish”
Flight Times/LHR/Air Freedom/Arrivals/Flight 1024
MQTT MQTT
client client
Subscribed to:
Flight Times/LHR/Air Freedom/Arrivals/Flight 1024

wildcards
# whole subtree
one level only
+

message
broker
“subscribe”
Flight Times/LHR/+/Arrivals/+
MQTT MQTT
client client

message
broker
“subscribe”
Flight Times/LHR/#
MQTT MQTT
client client

subscribe to…
twitter/tweets/dalelane
twitter/tweets/+

subscribe to…
twitter/tweets/TweetDeck/dalelane
twitter/tweets/twhirl/+
twitter/tweets/+/dalelane
twitter/tweets/#

POLLING

PO
LL
IN
G
PU
SH

message
broker

MQTT
message
broker
MQTT
HTTP?
REST?
etc.

MQTT message
client
broker
POLLING
MQTT
client

http://www.flickr.com/photos/oskay/472097903/

C Delphi Arduino
Python Perl Ruby
Java .NET PHP
J2SE & J2ME

http://www.flickr.com/photos/minxlabs/2297989507/

http://www.flickr.com/photos/minxlabs/2297989507/

http://www.flickr.com/photos/minxlabs/2297989507/

http://www.flickr.com/photos/minxlabs/2297989507/

http://www.flickr.com/photos/13606325@N08/2416993706/
http://del.icio.us/dalelane/ota09

Backup slides

“WebSphere
Message
Broker”
“Micro Broker”
“Really Small
Message
Broker”