Velocity 2011 Feedback - architecture, statistics and SPDY
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A presentation on the Velocity 2011 conference from Pieter Ennes from Watchmouse to the London Web Performance Meetup Group. He covers some of this thoughts on the conference and also a brief overview of SPDY.
Velocity 2011 Feedback - architecture, statistics and SPDY
- 1. #velocity2011 Bits of Velocity Pieter Ennes WatchMouse
- 2. #velocity2011 Take aways Sponsoring Mobile? DevOps Histograms Asynchronous SPDY
- 3. Some take-aways Pieter Ennes - WatchMouse 3
- 4. WatchMouse In a tweet: 62 Pieter Ennes - WatchMouse 4
- 5. World wide Pieter Ennes - WatchMouse 5
- 6. Public Status Pages Pieter Ennes - WatchMouse 6
- 7. Sponsoring This year: T-shirt sponsor Brand awareness Blog + IAM Next time: Booth Show-case more advanced features Get a talk! Pieter Ennes - WatchMouse 7
- 8. Themes Themes Mobile DevOps Front-end Pieter Ennes - WatchMouse 8
- 9. Mobile theme? KeyNote has invented a hideous mobile monitoring system (really) http://velocityconf.com/velocity2011/public/schedule/detail/20894 More interesting: Sencha http://velocityconf.com/velocity2011/public/schedule/detail/19967 Torbit http://velocityconf.com/velocity2011/public/schedule/detail/18135 Even better: Dedicated conference: Mobilism? Pieter Ennes - WatchMouse 9
- 10. Best keynotes Pieter Ennes - WatchMouse 10
- 11. Best keynotes Adrian Cockcroft: Netflix in the cloud Could not build their data center fast enough Amazing transition to Amazon AWS Lots of lessons in: http://velocityconf.com/velocity2011/public/schedule/detail/17785 Cloud automatically makes Dev and Ops interleave John Rauser: Look at your data Essential statistics for everyone http://velocityconf.com/velocity2011/public/schedule/detail/20280 Pieter Ennes - WatchMouse 11
- 12. Look at your data Histograms vs averages: Why important? Performance always follows same model Gamma distribution(s!) Fit to model using your eye Pieter Ennes - WatchMouse 12
- 13. Dev/Web/*Ops Pieter Ennes - WatchMouse 13
- 14. DevOps Asynchronous stuff rocks, now even harder Pick your framework Node.js, Twisted, Cyclone, Tornado, Gevent, Your queues SQS, RabbitMQ, Redis, XMPP, ... And serialisation JSON, BSON, Thrift, ProtoBufs, XML, Avro, Design 'services' The above is what the cloud is about Pieter Ennes - WatchMouse 14
- 15. SPDY Pieter Ennes - WatchMouse 15
- 16. SPDY Pieter Ennes - WatchMouse 16
- 17. SPDY An experimental protocol for a faster web Or: A layer 'between' SSL and HTTP that facilitates: Multi-plexing Prioritisation Compression Security Pieter Ennes - WatchMouse 17
- 18. SPDY: Strong points HTTP methods remain No change in application logic Multiplexing Mandatory SSL But does not perform slower! Mandatory Gzip Header compression Upstream compression http://www.theregister.co.uk/2011/06/16/google_and_spdy/ Pieter Ennes - WatchMouse 18
- 19. SPDY: Weaknesses Mandatory SSL Every site needs a (valid) certificate Risk of devaluation, what's next? EV, E-EV? Browsers need to communicate this properly More work for server (SSL + GZip) Caching problems Loosen restrictions here? No early chunked flushes? Content-Length headers mandatory Multiplexing is hard: Slow client adaptation? http://arstechnica.com/web/news/2009/11/spdy-google- Pieter Ennes - WatchMouse wants-to-speed-up-the-web-by-ditching-http.ars 19
- 20. SPDY http://velocityconf.com/velocity2011/public/schedule/detail/21089 Pieter Ennes - WatchMouse 20
- 21. SPDY http://velocityconf.com/velocity2011/public/schedule/detail/21089 Pieter Ennes - WatchMouse 21
- 22. SPDY Pieter Ennes - WatchMouse 22
- 23. SPDY Pieter Ennes - WatchMouse 23
- 24. SPDY: Status Google is effectively using it Chrome has enabled SPDY on 99% of the connections; 1% baseline on HTTP IANA port nr is for non-SSL SPDY (!?) Some benefits, some problems... http://www.theregister.co.uk/2011/06/16/google_and_spdy/ Pieter Ennes - WatchMouse 24
- 25. Questions, drinks, ... Pieter Ennes - WatchMouse 25