RabbitMQ

RabbitMQ is an open source distributed message queue written in Erlang and supports many communication protocols. It was trying to solve the spaghetti 🍝 mesh architecture where every client is communicating with other client in System by introducing an extra layer in the middle.

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In this video we will explain basic components of RabbitMQ Such as AMQP, channel, queue, publisher, consumer and some stuff, we will also learn how to spin up a RabbitMQ server and we will finally write some code to develop a publisher client that post messages to RabbitMQ. We will also write the consumer piece which will be the code that reads rabbitMQ. Finally I will talk about my personal thoughts on this tech.

timecodes

components 2:00

spin up docker rabbit 8:30

Write a Publisher client NodeJs 11:00

Write a consumer client NodeJs 20:30

my thoughts 33:50

Source Code: https://github.com/hnasr/javascript_playground/tree/master/rabbitmq

Example

Schedule async job

Exchange

Queues

Publisher

Consumer

AMQP

Channel

Connection

HTTP

AMQP

Uses Channels and Queues

Multiples channels into one connections

docker run --name rabbitmq -p 5672:5672 -d rabbitmq

docker run --name rabbitmq -p 5672:5672 -p 15672:15672 -d rabbitmq:3-management

HTTP

fetch("http://localhost:15672/api/vhosts”, {headers: {"Authorization" : `Basic ${btoa('guest:guest')}`}}).then(a=>a.json()).then(console.log)

fetch("http://localhost:15672/api/channels", {headers: {"Authorization" : `Basic ${btoa('guest:guest')}`}}).then(a=>a.json()).then(console.log)

fetch("http://localhost:15672/api/queues", {headers: {"Authorization" : `Basic ${btoa('guest:guest')}`}}).then(a=>a.json()).then(console.log)

https://www.squaremobius.net/amqp.node/channel_api.html#channel_bindExchange

https://www.rabbitmq.com/tutorials/tutorial-three-javascript.html