What's it and how to use it?

Marcela Godoy

DarkmiraTour 2019

Marcela Godoy

Full-Stack Developer @ AGV Logistic

PHPSP Campinas member

PHPWomen Evangelist

❤️📖☕

@magodoy88

We need to communicate to survive

Recipient

Sender

Message

• Confirm
  arrival;

• Unique response;

• Multiple responses.

Human model of communication is very similar with applications communication that we create

Client

Server

Request

Response

Communications evolve...

Applications too...

"Synchronous and Asynchronous are terms referring to the flux of an application"

Synchronous

Buy a

ticket

Send confirmation

Process

payment

Send a

ticket

Asynchronous

Buy a

ticket

Send

confirmation

Process
payment

Send a
ticket

Publisher

Message Broker

Consumer

A new way of communicating...

(sender)

(recipient)

But... why?

Facilitated communication between services and microservices

Performance improvement with asynchronous process

Scalability and decoupling in a easy way

What does it feed?

Message Broker

What is it?

Where it lives?

Open Source

AMQP

Advanced Message Queuing Protocol

Interoperability between services

Sets message patterns

Broker

Exchange

Virtual Host

Queue

Binding

Channel

Consumer

Publisher

Full Cycle of Message

Talking

about

this

RabbitMQ

Open Source

Written in Erlang

Huge reliability in distributed systems

Run on several operational system and languages

Has many plugins

Topologies

Standalone

Cluster

Topologies

Federation

Installing

&

Configuring

* The RabbitMQ installation
(Server)

* RabbitMQ management panel installation
(Plugin)

* Virtual host and user configurations

More infos in http://www.rabbitmq.com/download.html

It works in http://<localhost>:15672

Management Panel Plugin

User configurations

We ❤️ all programming languages...

The AMQP library

https://github.com/php-amqplib/php-amqplib

$ composer require php-amqplib/php-amqplib

Creating a Publisher

Use your favorite language. There will be a library for this.

Create a connection and channel

Create your message and send to exchange =)

Creating a Publisher

Queue_declare ( )

'Name' - Name of queue

'Durable' - Are we going to survive the restart?

'Auto_delete' - What happens after the last message?

'Nowait' - Should we wait for an answer?

Creating a Consumer

Don't forget the connection and channel

Let's consume the queue items

Meanwhile in the message broker...

Choosing a exchange

Exchange Declaration

Fanout Exchange

Exchange

Queues

Direct Exchange

Exchange

Queues

Archive

Crop

Resize

Topic Exchange

Exchange

Queues

*.web

*.log

*.email

Headers Exchange

Exchange

Queues

Archive

Crop

Resize

Use header informations as routing key

Some interesting solutions

Dead Letter

Exchange

Publisher

Queue

Consumer

Exchange

Reject Queue

Multiple Consumers/Services

Exchange

Publisher

Queue

Consumer

Queue

Queue

Cloud

Email

DB

Delayed Message

Exchange

Publisher

Delay Queue

Exchange

Queue

Get to know more about RabbitMQ...

http://www.rabbitmq.com/getstarted.html

Thanks and see you soon ;)

@magodoy88

magodoycruz@gmail.com