Talk of Bohdan Parshentsev, senior backend engineer at P2H, at Ruby Meditation #28 Kyiv 26.10.2019 Slideshare - ** Next conference - http://www.rubymeditation.com/ This presentation is connected with presentation How to cook Rabbit on Production - Serhiy Nazarov | Ruby Meditation 28 Why we need a Rabbit? Let's try to cook it tasty. And what else? - Live demo of several useful dishes. Be ready to use Telegram to have fun with us. Announcements and conference materials https://www.fb.me/RubyMeditation News https://twitter.com/RubyMeditation Photos https://www.instagram.com/RubyMeditation The stream of Ruby conferences (not just ours) https://t.me/RubyMeditation * The channel of the organizers of the meetup https://t.me/incredevly

1. How to cook
Rabbit on
Production
Bohdan Parshencev
Serhiy Nazarov

2. Without a monolith anywhere!

3. Expectation Reality

4. So, where a compromise?

7. RabbitMQ advantages
● Asynchronous processing
● Flexible routing
● Convenient debugging
● Scalability of consumers and producers
● Resilience to reboots and failures

10. Need advice

12. Challenge?

13. Resource - Action - Context
● Obvious solution
● Easy to solve business problems

15. How else?

16. RESOURCE
PROCESS
STATE
context

17. Setup routing
rabbit_connection ||= Bunny.new
rabbit_connection.start
rabbit_channel = rabbit_connection.create_channel
exchange_general = rabbit_channel.headers("rm28.general", durable: true)
exchange_space = rabbit_channel.headers("rm28.space", durable: true)
serhiy_queue = rabbit_channel.queue("serhiy", durable: true)
serhiy_queue.bind(exchange_general, arguments: { speaker: "serhiy", resource: "question", "x-match": :all })
serhiy_queue.bind(exchange_general, arguments: { speaker: "both", resource: "question", "x-match": :all })
bohdan_queue = rabbit_channel.queue("bohdan", durable: true)
bohdan_queue.bind(exchange_general, arguments: { speaker: "bohdan", resource: "question", "x-match":
:all })
bohdan_queue.bind(exchange_general, arguments: { speaker: "both", resource: "question", "x-match": :all
})
exchange_space.bind(exchange_general, arguments: { resource: "message", "x-match": :all })
space_queue = rabbit_channel.queue("space", durable: true)
space_queue.bind(exchange_space, arguments: { })
rabbit_connection.close

18. bohdan_queue = rabbit_channel.queue("bohdan", durable: true)
bohdan_queue.bind(exchange_general,
arguments: {
speaker: "bohdan",
resource: "question",
"x-match": :all })
bohdan_queue.bind(exchange_general,
arguments: {
speaker: "both",
resource: "question",
"x-match": :all })

20. RPC
remote procedure call

21. RPC stands for Remote Procedure Call. The basic concept of RPC is that some information is sent
and later some information is received. There is a one to one correlation between those two
categories of information under normal circumstances. This mirrors the basic paradigm of imperative
programming: the function call. The difference is RPC is typically used to exchange information
between two systems separated by a network connection or another communication medium. The
two systems may not even be written in the same programming language.

22. DEMO

23. https://rabbit.rm28.demo.qpard.com