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[RakutenTechConf2013] [C-2_1] Viki - Technology evolution from idea to acquisition
[RakutenTechConf2013] [C-2_1] Viki - Technology evolution from idea to acquisition
[RakutenTechConf2013] [C-2_1] Viki - Technology evolution from idea to acquisition
[RakutenTechConf2013] [C-2_1] Viki - Technology evolution from idea to acquisition
[RakutenTechConf2013] [C-2_1] Viki - Technology evolution from idea to acquisition
[RakutenTechConf2013] [C-2_1] Viki - Technology evolution from idea to acquisition
[RakutenTechConf2013] [C-2_1] Viki - Technology evolution from idea to acquisition
[RakutenTechConf2013] [C-2_1] Viki - Technology evolution from idea to acquisition
[RakutenTechConf2013] [C-2_1] Viki - Technology evolution from idea to acquisition
[RakutenTechConf2013] [C-2_1] Viki - Technology evolution from idea to acquisition
[RakutenTechConf2013] [C-2_1] Viki - Technology evolution from idea to acquisition
[RakutenTechConf2013] [C-2_1] Viki - Technology evolution from idea to acquisition
[RakutenTechConf2013] [C-2_1] Viki - Technology evolution from idea to acquisition
[RakutenTechConf2013] [C-2_1] Viki - Technology evolution from idea to acquisition
[RakutenTechConf2013] [C-2_1] Viki - Technology evolution from idea to acquisition
[RakutenTechConf2013] [C-2_1] Viki - Technology evolution from idea to acquisition
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[RakutenTechConf2013] [C-2_1] Viki - Technology evolution from idea to acquisition

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Rakuten Technology Conference 2013 …

Rakuten Technology Conference 2013
"Viki - Technology evolution from idea to acquisition"
Rohit Dewan (Viki)

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  • 1. Viki Technology evolution from idea to acquisition
  • 2. Global TV, Powered By Fans • TV, Movies & Music videos • Subtitles created by avid fans for free in 160+ languages • • • • • 1bn+ video views / year 400mm+ words translated by fans 23mm+ monthly active users 12mm+ mobile installs 17,000+ hours of global prime-time content from 50+ countries History • Founded in Palo Alto, CA, out of beta as a company in Dec 2010 • Offices in SF, Singapore, Seoul, Tokyo • Investors: Greylock, Andreessen Horowitz, Neoteny (Joi Ito), BBC, SK Planet … Awards • World Economic Forum Tech Pioneer ‘14 • WSJ Asia Most Innovative Companies ‘12 • TechCrunch Best International Start-Up ‘10
  • 3. The Beginning • • • • Founded in 2008 by Razmig Hovaghimian, Changseong Ho and Jiwon Moon Initially named ViiKii Self funded First engineering team in Korea
  • 4. Viki 1.0 technology - 2008 • • • • • Flash developers who built the subbing tools also built the website PHP + MySQL Business logic in stored procedures Very heavy feature set e.g nearly every object supported threaded conversation and many were loaded on each page No caching
  • 5. Inflection Point - 2010 • • • Rapid user adoption. Big hits like Playful Kiss Website was slow and buggy. Every new feature made it worse Peak hours access had to be limited to users who had made a donation to Viki
  • 6. Viki 2.0 - 2010 to 2011 • • • • • • Viki moves base to Singapore and raises Series A of $4.3 million in Dec 2010 Hires Pivotal Labs to solve scale problems and train new full time engineers being hired Website rewritten in Ruby on Rails and Postgres Caching using Varnish and Memcache Use Heroku as PAAS Built IOS and Android App
  • 7. Inflection point - 2012 • • • • • • Explosive adoption of mobile apps Many partner apps and integrations Millions more users all over the world. Many requests > 150ms Not enough separation of concerns Single point of failure
  • 8. Viki 3.0 - 2012 to now • • • • • Public API (http://dev.viki.com/v4/api/) Multiple points of presence High performance (most API calls < 25ms) Read Optimized Eventually consistent architecture
  • 9. Eventually consistent • • • Single central data store (source of truth) Writes to a specific POP are propagated to other POPs through a central queue. Typical writes propagate within seconds Public API Internal API POP POP Queue POP Worker DB
  • 10. Points of Presence • • • Multiple POPs increase fault tolerance Latency based DNS routing (Route53) so clients access closest healthy POP Currently have 4 POPs two in the US, one in Europe and one in Singapore API Proxy/Caching Layer Nginx Hyperion Cache (Redis)
  • 11. High performance • • • Network Time - API Requests served by nearest POP Generation Time - Data model tuned for performance with extensive use of precomputed in-memory data structures. Most calls returned in < 25ms Render Time - Rich API reduce client side operations
  • 12. Takeaways • • • • It is normal for your architecture/code to run its course and be replaced Need buy in from management to make revolutionary rather than evolutionary changes No Technology Religion Be humble and keep learning
  • 13. Where are we headed • • • • • • More social Personalized Huge growth in content (library and on-air) 100 Million Users Support for more devices and partners Exploiting synergies and leveraging other Depts - ID, Superpoints, Search etc.
  • 14. Viki 4.0 technical challenges • • • • • • Data partitioning/sharding Search Recommendations Content Management Analytics and Insights Monitoring and Troubleshooting
  • 15. • • We need your help :-) Rohit Dewan - rohit@viki.com
  • 16. Questions?

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