Scaling wix to over 50 m users
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Over the first 8 years of Wix, Wix infrastructure has gone a number of transformations, starting as a monolithic application server with MySQL, evolving to a service based architecture with with diverse infrastructure. Over this 8 years journey, we have learned a thing or two - some DOs and some DON'Ts. This presentation goes over the evolution of Wix architecture, with the different transformations we have done to support Wix at scale. We will share some of out insights about building a web infrastructure for over 50M users
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Scaling wix to over 50 m users
- 1. Scaling Wix to over 50M users
- 5. 2006 2007 2008 2009 2010 2011 2012 2013 2014 Wix is founded First funding Open beta 1 M users eCommerce 10 M users IPO 50 M users Mobile App Market Hive Wix Worldwide HTML 5
- 9. Cache • You don’t need a cache • Really, you don`t • Cache is not part of your architecture – Introduce it to solve a problem
- 10. First Challenge - 2008 • Server updates imposed downtime • Two concerns • Creating websites • Viewing websites • Different service level needed
- 11. Public vs Editor Public Public DB Editor Editor DB
- 12. MySQL is better NoSQL
- 13. Hosting Co-Location Managed Hosting Cloud Lease hardware and maintenance Overnight provisioning Reliable software and hardware Instant lease hardware Instant provisioning unlimited resources Reliable software unreliable hardware Own and maintain your hardware Provision -> buy deliver and install Reliable software and hardware
- 14. 2006 2011 2012 2013 2014 Austin Amsterdam Amazon, Google Chicago Tampa
- 15. Wix Media • 500 GByte of small files – Hit IO limitations • Need scalable solution – Number of files – HTTP connections • Image manipulations
- 16. Wix Media Platform x36 x36 x32 x36 x36 x32 Austin Chicago get 37D815B5.jpg First fallback CDN If not in CDN
- 17. Wix Media Platform x36 x36 x32 x36 x36 x32 Google Cloud Austin Chicago get 37D815B5.jpg First fallback Second fallback CDN If not in CDN
- 18. Wix Media Platform Google Cloud Austin Tampa get 37D815B5.jpg CDN If not in CDN Amazon Cloud
- 20. CDN • Use a CDN! • Cache killer pattern – http://static.wix.com/client/1.3.2/css/viewer.css
- 21. Development Velocity - 2010 • Large and entangled codebase • Hard feature rollout • While at the same time, the iPad was released • We needed to enable Wix to move fast
- 22. 2011 2012 2013 2014 CI / CD / TDD DevOps ScalaWix Framework Micro-Services 2010 TDD Redux Companies & Guilds
- 23. People are the key
- 25. Why CI / CD / TDD / DevOps? • Fear of change • Low quality • Slow product development • 3 months from dev to GA I want change I want stability
- 26. CI / CD / TDD / DevOps • Small and fast changes • Empower the developer • Automate!!! • Measure!!! • = x xRisk Number of changes Size of change $$$ impact of change
- 27. Prepare Release
- 28. Deploy
- 29. Monitor
- 30. Micro-Services • Over 100 micro-services at Wix • Each service is a process • Independent development & deployment • Risk mitigation • Increases % of network failures • Back / Forward compatibility • Size of a service – as large as the team
- 31. Companies & Guilds • Companies focus on products • Guilds focus on technology How What Company leader Guild master
- 32. Questions?
Editor's Notes
- Built for fast development Did not know what are business is We know we will need to replace it Did not know how hard that will be
- Cache management – how do you know what is in the cache? How do you find invalid data in the cache? Invalidation – who invalidates the cache? When? Why? Cache Reset – can your architecture stand a cache restart?
- Sites should never ever have a downtime! Sites should work as fast as possible, always! However, an editing system does not require this level of SLA
- Releases of Editing feature should have no impact on existing site operations! Solution - The two concerns evolve independently The Public segment targets serving websites Has mostly read-only usage pattern Simple publishing system Simple + readonly -> simpler to have higher SLA and DRP MySQL used as NoSQL – single large table with XML text fields The Editor segment Exposes the Editing APIs, user account and galleries management. Has different release schedule compared to the Public segment
- Use one non-normalized table, primary key access, json fields Immutable blobs, blog table with pointers No transactions No MySQL auto generated keys GUID for keys – no locks, enable master master replication
- Amsterdam for 3 way active active -> failed Doing 2 way active active + service disruption on third
- The “upload to app server, post process files, copy to lighttpd server, serve by lighttpd” pattern proved inefficient, slow and error prone ls does not scale Needed control over http headers for caching
- CDN acts as a great connection manager - We have CDN hit ratio’s of over 99.9% There are many vendors We started with 1 CDN vendor We are now working with two CDN vendors Different CDN vendors have advantages at different geo Tune HTTP Headers per CDN Vendor CDN Vendors interpret HTTP headers differently
- Train the people you already have Hiring the right people is key to success Hire only the best developers (only seniors) Don’t count only on the interview, you need to test actual coding Hire people who will challenge you (no “yes man”) Get people you can trust with “root” access to production Never stop hiring