HTTP/2 : why upgrading the web? - DjangoCon Europe 2016 Budapest

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HTTP is the protocol who rules the WEB. 20 years old, the version 2, major upgrade is now cooked and nearly ready to be used by real peoples. So, how new the new HTTP version is? What is the new features added to the protocol? Is it great to used? Does it will be used or be the next ipv6 like giant internet migration? Overview of HTTP2 and why it's great. - https://djangocon.eu/speakers/2

Software

WHY HTTP/2?
WHY
UPGRADING
THE WEB?
QUENTIN ADAM
@WAXZCE
2013

Quentin ADAM from the Clever Cloud
@waxzce on twitter – github- soundcloud – instagram ….
WHO AM I ?

MY DAY TO DAY WORK :
CLEVER CLOUD, MAKE YOUR
APP RUN ALL THE TIME

And learn a lot of things about your code, apps, and good/bad design…
KEEP YOUR APPS ONLINE. MADE WITH
NODE.JS, SCALA, JAVA, RUBY, PHP,
PYTHON, GO…

AND LEARN A LOT OF THINGS ABOUT
YOUR CODE, APPS, AND GOOD/BAD
DESIGN…

GIVE BACK TO THE COMMUNITY
NEVER
GONNA
LET YOU
DOWN
clever-cloud.com

THE 4 PARTS
Verb Resource
Headers
Body
(optional)

THE SPEC IS MADE OF OPTIONS
AND ABILITY TO EXTENDS

THE HACKS WE
ARE DOING
EVERYDAY
WITHOUT
THINKING TO
IMPROVE
PERFORMANCES

MULTIPLE DOMAIN NAMES FOR
MULTIPLES STREAMS

STATIC ASSETS DOMAIN NAME FOR FAT
COOKIES PROBLEM MANAGEMENT

COMET/WEBSOCKET/PULLING/SERVER
SENT ENVENT… BIDIRECTIONAL DATA
STREAMS HACKS

BINARY PROTOCOL ARE SAFER, EASER
TO PARSE, CONCISE…

WHAT IS WIRESHARK ?
Your app Wireshark System
Network
card

STREAMS
~ 1 HTTP/1 REQUEST = 1 HTTP/2 STREAM

FRAMES
Content
a.html #1
Content
dog.gif #1
Content
a.html #2
Content
dog.gif #2
Content
a.html #3
Content
a.html #4
Content
cat.gif #1
Content
dog.gif #4
…

No more blocking i/o from DH/storage to network, use it most efficient as possible
SEND DATA WHEN READY TO SEND

IMPROVE THE BROWSER
WATERFALL WITH STREAM
PRIORITY

PUSH FROM THE SERVER A RESOURCE
TO THE CACHE

NO CHANGE
• 4 parts request vision
• Name of headers
• Name of verbs
• Name of protocol
= terminology

HTTP/1 BUILD IN METHOD
Upgrade:
header
Code 101
Switching

CURRENT NEGOTIATION:
TLS VERSION, CYPHER…

NEGOTIATE THE PROTOCOL IN THE
SAME TIME OF ENCRYPT NEGOTIATION

H2, H2-14
- Firefox
- Chrome
- cURL
- IE (oh yeah)
- …
- Google
- Twitter
- Akamai
- ….
https://github.com/http2/http2-spec/wiki/Implementations

WORKING ON THIS
Client
http2
reverse
proxy
http2
your app
: http1

SOME OF THE
GOODNESS OF
HTTP/2
DIRECTLY ON
HTTP/1 APPS

LOT OF WORK PUTTING THIS ON
ACTUAL WEB FRAMEWORK

DJANGO IS NOT READY (YET)
AND THIS IS A GOOD COMMITTER
SLOT OPPORTUNITY
Problem 1: WSGI ;-)

BUT PYTHON IS ON THE
FIELD WITH HYPER
1.0.0 released on October 2015

TODO LIST
• https://http2.github.io/
• Specs
• Implementations
• FAQ
• News
• Hack with http://python-hyper.org/
• Follow the Cory Benfield work @Lukasaoz
• Install Wireshark on your laptop

I’m @waxzce on twitter
I like feedbacks on my talks,
good or bad.
I also need feedbacks as
python users on Clever
Cloud, so please give it a try
THX FOR LISTENING
& QUESTIONS TIME
clever-cloud.com gift coupon code:
DJANGOCON16
quentin.adam@clever-cloud.com
I have plenty of stickers ;-)

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Slide créé sur google slides https://docs.google.com/presentation/d/1pZvS5BEFfXceS3xXIePKkeAx-aZpxhloNInaIHD5eTw/edit?usp=sharing Comment monitorer ce qu’on ne connait pas? Un des défis technique chez Clever CLoud, à part la scalabilité, c’est de monitorer automatiquement toutes les stacks techniques de nos clients, sans que l’on sache quoi que ce soit. Notre premier but quand nous avons reconstruit notre plateforme de monitoring était de supporter notre pattern Imutable Infrastructure qui génère quantité de hosts éphémères chaque minute. L’approche traditionel est de se concentrer sur les VMs et les Hosts, pas les applications? Il fallait changer de paradigme pour avoir une approche de découverte automatique des métriques à monitorer, permettre à du code tiers de publier ses propres métriques. Ce talk décrit le chemin qui nous a ammené à construire Clever Cloud Metrics, basé sur Warp10 ( basé sur Kafka/Hadoop/Storm) pour améliorer les conditions de travail de nos utilisateurs et la stabilité de nos applications.

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1. WHY HTTP/2? WHY UPGRADING THE WEB? QUENTIN ADAM @WAXZCE 2013

2. Quentin ADAM from the Clever Cloud @waxzce on twitter – github- soundcloud – instagram …. WHO AM I ?

3. MY DAY TO DAY WORK : CLEVER CLOUD, MAKE YOUR APP RUN ALL THE TIME

4. And learn a lot of things about your code, apps, and good/bad design… KEEP YOUR APPS ONLINE. MADE WITH NODE.JS, SCALA, JAVA, RUBY, PHP, PYTHON, GO…

5. AND LEARN A LOT OF THINGS ABOUT YOUR CODE, APPS, AND GOOD/BAD DESIGN…

6. GIVE BACK TO THE COMMUNITY NEVER GONNA LET YOU DOWN clever-cloud.com

7. WHAT’S THE HTTP JOB ?

8. HYPERTEXT TRANSFERT PROTOCOL

10. HTTP1 IS TEXT PROTOCOL

11. REQUEST <-> RESPONSE MODEL

12. THE 4 PARTS Verb Resource Headers Body (optional)

13. THE SPEC IS MADE OF OPTIONS AND ABILITY TO EXTENDS

14. WHAT WAS THE REQUIREMENTS?

15. FASTER FASTER FASTER

16. // REQUESTS ?

17. HTTP PIPELINING

18. THE HACKS WE ARE DOING EVERYDAY WITHOUT THINKING TO IMPROVE PERFORMANCES

19. MULTIPLE DOMAIN NAMES FOR MULTIPLES STREAMS

20. STATIC ASSETS DOMAIN NAME FOR FAT COOKIES PROBLEM MANAGEMENT

21. COMET/WEBSOCKET/PULLING/SERVER SENT ENVENT… BIDIRECTIONAL DATA STREAMS HACKS

22. SO, WE NEED A NEW VERSION OF HTTP

23. WHO IS IN CHARGE ?

24. HTTPBIS WORKING GROUP

25. FIRST HTTP/2 DRAFT IS SPDY/3 DRAFT

26. BUILD ON SOMETHING

27. SO WHAT IS IN THE BOX ?

28. HTTP/2 IS A BINARY PROTOCOL

29. HTTP/1 + COMPRESSION + SSL = ~BINARY

30. BINARY PROTOCOL ARE SAFER, EASER TO PARSE, CONCISE…

31. WIRESHARK FOR ALL

32. WHAT IS WIRESHARK ? Your app Wireshark System Network card

33. BUILD ONLY 1 TCP CONNECTION

34. PUT SOME STEAMS IN ONE CONNECTION

35. STREAMS ~ 1 HTTP/1 REQUEST = 1 HTTP/2 STREAM

36. STREAMS ARE BUILT OF FRAMES

37. FRAMES Content a.html #1 Content dog.gif #1 Content a.html #2 Content dog.gif #2 Content a.html #3 Content a.html #4 Content cat.gif #1 Content dog.gif #4 …

38. BINARY GOODNESS => FRAMES IS EASY

39. No more blocking i/o from DH/storage to network, use it most efficient as possible SEND DATA WHEN READY TO SEND

40. STREAMS PRIORITY

41. IMPROVE THE BROWSER WATERFALL WITH STREAM PRIORITY

42. PUSH FROM THE SERVER A RESOURCE TO THE CACHE

43. USER XP WILL BE BETTER

44. HEADERS

45. HEADER COMPRESSION

46. HPACK *new RFC*

47. HEADERS PERSISTENCE

48. FOCUS ON WEB PERFORMANCES

49. NO CHANGE • 4 parts request vision • Name of headers • Name of verbs • Name of protocol = terminology

50. HOW TO UPDATE THE WEB ?

51. URL CANNOT CHANGE

52. HTTP & HTTPS

53. NEGOCIATE A PROTOCOL ELEVATION

54. HTTP/1 BUILD IN METHOD Upgrade: header Code 101 Switching

55. WORKFLOW

56. WORKFLOW

57. 2 connections IT’S STILL SLOW

58. ENCRYPT THE WEB : TLS

59. CURRENT NEGOTIATION: TLS VERSION, CYPHER…

60. NEGOTIATE THE PROTOCOL IN THE SAME TIME OF ENCRYPT NEGOTIATION

61. NPN (CLIENT) & ALPN (SERVER)

62. ISTLSFASTYET.COM

63. IS IT FOR REAL?

64. LOOKS LIKE IP V6 STORY?

65. MORE SPDY STORY

66. BENCHMARK TIME CAUTION

67.

68. H2O PERFORMANCES

69. source

70. H2, H2-14 - Firefox - Chrome - cURL - IE (oh yeah) - … - Google - Twitter - Akamai - …. https://github.com/http2/http2-spec/wiki/Implementations

71. CLEVER CLOUD MANAGEMENT FOR THE MASSES

72. WORKING ON THIS Client http2 reverse proxy http2 your app : http1

73. SOME OF THE GOODNESS OF HTTP/2 DIRECTLY ON HTTP/1 APPS

74. LOT OF WORK PUTTING THIS ON ACTUAL WEB FRAMEWORK

75. DJANGO IS NOT READY (YET) AND THIS IS A GOOD COMMITTER SLOT OPPORTUNITY Problem 1: WSGI ;-)

76. BUT PYTHON IS ON THE FIELD WITH HYPER 1.0.0 released on October 2015

77. WHY IT’S SO COOL?

78. PERFORMANCES

79. REMOVE ALL THE SHITTY HACKS

80. EXPLORE NEW POSSIBILITIES

81. IMPROVE THE USERS XP

82. TODO LIST • https://http2.github.io/ • Specs • Implementations • FAQ • News • Hack with http://python-hyper.org/ • Follow the Cory Benfield work @Lukasaoz • Install Wireshark on your laptop

83. I’m @waxzce on twitter I like feedbacks on my talks, good or bad. I also need feedbacks as python users on Clever Cloud, so please give it a try THX FOR LISTENING & QUESTIONS TIME clever-cloud.com gift coupon code: DJANGOCON16 quentin.adam@clever-cloud.com I have plenty of stickers ;-)

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