×
Copy
Open
Link
Embed
Share
Beginning
This slide
Copy link URL
Copy link URL
Copy iframe embed code
Copy iframe embed code
Copy javascript embed code
Copy javascript embed code
Share
Tweet
Share
Tweet
Slide 1
Slide 1 text
Message queues don't need to be scary An intro workshop to AMQP
Slide 2
Slide 2 text
AMQP
Slide 3
Slide 3 text
Advanced Message Queuing Protocol
Slide 4
Slide 4 text
No content
Slide 5
Slide 5 text
Why?
Slide 6
Slide 6 text
Job Queue Event Stream Buffered RPC
Slide 7
Slide 7 text
Job Queue
Slide 8
Slide 8 text
Producer Consumer
Slide 9
Slide 9 text
Producer Consumer Producer
Slide 10
Slide 10 text
Producer Consumer Producer Consumer
Slide 11
Slide 11 text
Producer Consumer Producer Consumer
Slide 12
Slide 12 text
Slow Operations Expensive Operations Brittle Operations
Slide 13
Slide 13 text
Producer c = create_channel q = c.queue("task") x = c.default_exchange x.publish( "task", "payload" ) Consumer c = create_channel q = c.queue("task") q.subscribe(worker) worker = fn(*message) { // do stuff }
Slide 14
Slide 14 text
Acknowledging Messages q = c.queue("task") q.subscribe(worker, ack = TRUE) worker = fn(info, metadata, body) { // do work c.acknowledge(info.delivery_tag) }
Slide 15
Slide 15 text
Publishing Options Mandatory Will error if not queued Immediate Will error if no consumer available Confirm Server acknowledges receipt
Slide 16
Slide 16 text
Queue Declare Options Passive Don't create, get reference to existing queue Durable Queue still exists after a broker restart
Slide 17
Slide 17 text
Event Stream
Slide 18
Slide 18 text
Producer Consumer Producer Consumer Consumer Consumer Producer
Slide 19
Slide 19 text
Topic Exchange routing.key Exact match routing.*.key routing.#.key Wildcard matching routing.key routing.a.key routing.b.key routing.a.b.key
Slide 20
Slide 20 text
(soft) Real-time updates User notifications Work distribution
Slide 21
Slide 21 text
Binding a Queue x = c.exchange("activity”) q = c.queue("alert") q.bind(x, "balance.*") q.bind(x, "transfer.out") x.publish("balance.low") x.publish("transfer.in") x.publish("transfer.out")
Slide 22
Slide 22 text
Queue Declare Options Exclusive Only one consumer on this queue at any time Auto Delete Queue is deleted after consumer disconnects
Slide 23
Slide 23 text
Simulator Demo
Slide 24
Slide 24 text
Buffered RPC
Slide 25
Slide 25 text
Producer Consumer
Slide 26
Slide 26 text
Message Header Reply To Correlation ID
Slide 27
Slide 27 text
Reply To reply = c.queue("abcdef") x.publish("request", :headers => { :replyTo => "abcdef" }) reply.subscribe(handleResponse)
Slide 28
Slide 28 text
Correlation ID x.publish("request1", :headers => { :replyTo => "abcdef", :correlationID => "request1" }) x.publish("request2", :headers => { :replyTo => "abcdef", :correlationID => "request2" })
Slide 29
Slide 29 text
Smooth out Spikes Transparently scale Deferred Response
Slide 30
Slide 30 text
Why not just use … ?
Slide 31
Slide 31 text
Delayed Job Resque / Sidekiq Beanstalkd
Slide 32
Slide 32 text
JMS Stomp MQTT
Slide 33
Slide 33 text
ØMQ
Slide 34
Slide 34 text
Ruby Quickstart
Slide 35
Slide 35 text
gem install bunny
Slide 36
Slide 36 text
require 'bunny' url = 'amqp://un:pw@host:5672/vhost' conn = Bunny.new(url) conn.start ch = conn.create_channel ch.prefetch 1
Slide 37
Slide 37 text
declare_options = {:no_declare => true} q = ch.queue(name, options) options = {:block => true, :ack => true} q.subscribe(options) do |info, meta, body| # do stuff ch.ack(info.delivery_tag) end
Slide 38
Slide 38 text
declare_options = {:no_declare => true} x = ch.topic("name", declare_options) x.publish("message", :routing_key => "key")