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Building Reliable Systems From
Unreliable Parts
Plan for it.
All systems fail
Jonah Horowitz
(Site Reliability Engineer at Netflix and elsewhere)
Chaos is your friend
Stateless services are awesome
store state somewhere
Repair Automatically
Even in open source projects.
Culture is important
Jonah Horowitz
Site Reliability Engineer
@jonahhorowitz
jonah@jonahhorowitz.com
Jonah Horowitz
Site Reliability Engineer
@jonahhorowitz
jonah@jonahhorowitz.com

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Building Reliable Systems From Unreliable Parts

Editor's Notes

  1. You might think that the problems at large scale are different from the problems at small scale, but it's all failure all the time, and it is only worse at large scale
  2. Tell the story about the failure last week when a developer pushed a small Java warmup script and took out all of netflix api servers.
  3. Home built BBS in 1990 Some NOC/Helpdesk work Walmart.com in 2000 BSEE from the Univ of Cincinnati Music Startup in 2005 Telecom Startup in 2007 Advertising companies Netflix Talk about Netflix scale 100k servers, 80M users, 30TB/s network traffic, 800 microservices, 1500 engineers
  4. Talk about Chaos Monkey, Chaos Kong
  5. Most of the 800 microservices at Netflix are stateless, this allows for failure
  6. Globally replicated cassandra database rings, massive number of nodes, but you should have 2 copies of your database.
  7. Never have an engineer do something that can be done automatically. Computers are better at pushing puttons than you are. Talk about rebootageddon, zero downtime even though 1/3 of our cassandra servers were rebooted over 48 hours.
  8. Netflix lawyers didn't approve my talk, so everything I said was my own opinion. Speakers here were really inspiring.