Odessa PyConferecnce 2018

1. Async Python and Web Sockets
Anton Caceres

2. PYCON GERMANY 2016

3. PYCON WEB ❤

4. LAW OFTHE INSTRUMENT

5. HTTP,
Me want this!!111

6. THE IDEA

7. +STYLES, IMAGES,APP SERVER

8. ICONS SPRITES
.flags-italy {
height: 135px;
background-position: -5px -143px;
}

9. AJAX

10. AJAX

13. LONG POLLING

15. WEB SOCKETS

16. USING WEBSOCKETS

17. by Stanislav Dzhus
PERFORMANCE

18. PITFALLS
• No caching
• No statuses
• No error handling
• Idempotent actions
• Delivery not
guaranteed
• Connection control
needed

19. USE CASES
• Tracking systems
• Monitoring
• Logging
• Multiplayer games
• Collaborative editing

20. CLIENT EXAMPLE
VANILLA JS

21. CLIENT EXAMPLE
VANILLA JS

22. BACKENDTOOLS
What can we use in Python

23. TORNADO

24. TORNADO

25. DEMO

26. DJANGO (CHANNELS)

27. DJANGO CHANNELS

28. BONUS:WEBSOCKETS

29. WEBSOCKETS

30. Want some remoteTornado tasks?
- talk to me, anton@tech-5.de
An agency that actually works ©
THANKYOU!

32. CREDITS
• Jasdeep Jaitla - WebSockets vs REST: Understanding the
Difference, https://www.pubnub.com/blog/2015-01-05-
websockets-vs-rest-api-understanding-the-difference/
• Eric Chen - Load Balancing WebSockets: https://
devcentral.f5.com/articles/load-balancing-websockets
• SF Python January 2015 - WebSockets in Python by Matt
Makai: https://www.youtube.com/watch?v=L5YQbNrFfyw