RabbitMQ is a message broker – an application that allows communication between applications by way of a message queuing system. In this talk, we look at some of the basic concepts of RabbitMQ and how it can help effectively scale your applications. These slides are for the lightning talk I gave at Nomad PHP on 22nd May 2014.

1. What RabbitMQ Can Do For You
James Titcumb
Nomad PHP Lightning Talk
May 2014

2. Who is this guy?
James Titcumb
www.jamestitcumb.com
www.protected.co.uk
www.phphants.co.uk
@asgrim

3. What is message queuing?

4. Separate applications

5. Low cost parallelisation

6. Basic Example
Publisher
queue
Consumer
Based on: http://www.rabbitmq.com/tutorials/tutorial-one-php.html

7. Exchanges
Based on: http://www.rabbitmq.com/tutorials/tutorial-three-php.html
queue1
Publisher
Publisher
Publisher
Publisher
Exchange
queue2
Consumer
Consumer
Consumer

8. Exchanges: Direct
Based on: http://www.rabbitmq.com/tutorials/tutorial-four-php.html
fruit
Exchange
vegetable
Fruit consumer
Veg consumer
Fruit consumer
Publisher
routing key: fruit
routing key: vegetable

9. Exchanges: Topic
Based on: http://www.rabbitmq.com/tutorials/tutorial-five-php.html
*.fruit
Exchange
green.*
Fruit consumer
Green consumer
Veg consumer
Publisher
routing key: green.fruit
routing key: green.vegetable
*.vegetable

10. Real World Uses
● Fast logging solution
● Sending emails
● Sending SMS
● Background processing (e.g. analysing data)

11. Using in PHP?
https://github.com/videlalvaro/php-amqplib

12. composer.json
{
"require": {
"videlalvaro/php-amqplib": "2.*"
}
}

13. Set up the channel
use PhpAmqpLibConnectionAMQPConnection;
$connection = new AMQPConnection(
'localhost', 5672, 'guest', 'guest', '/');
$channel = $connection->channel();
$channel->queue_declare('my_queue', /* params... */);
$channel->exchange_declare(
'my_exchange', 'fanout', /* params... */);
$channel->queue_bind('my_queue', 'my_exchange');

14. Basic Publishing Example
use PhpAmqpLibMessageAMQPMessage;
$content = 'Hello world';
$message = new AMQPMessage($content);
$channel->basic_publish($message);

15. Basic Consumer Example
use PhpAmqpLibMessageAMQPMessage;
$channel->basic_consume(
'my_queue',
/* some more parameters */
function (AMQPMessage $message) {
echo $message->body;
}
);

16. Questions?

17. Thank you!
James Titcumb
www.jamestitcumb.com
www.protected.co.uk
www.phphants.co.uk
@asgrim
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