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Added better system design outline. Added it to cheat sheets.

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John Washam 2016-09-14 11:01:41 -07:00
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@ -948,21 +948,36 @@ You'll get more graph practice in Skiena's book (see Books section below) and th
- Timelines at Scale: https://www.infoq.com/presentations/Twitter-Timeline-Scalability - Timelines at Scale: https://www.infoq.com/presentations/Twitter-Timeline-Scalability
- [x] Practicing the system design process: Here are some ideas to try working through on paper, each with some documentation on how it was handled in the real world: - [x] Practicing the system design process: Here are some ideas to try working through on paper, each with some documentation on how it was handled in the real world:
- review: System Design from HiredInTech: http://www.hiredintech.com/system-design/ - review: System Design from HiredInTech: http://www.hiredintech.com/system-design/
- [cheat sheet](https://github.com/jwasham/google-interview-university/blob/master/extras/cheat%20sheets/system-design.pdf)
- flow: - flow:
- ask about constraints 1. Understand the problem and scope:
- determine use cases - define the use cases, with interviewer's help
- abstract, high level design - suggest additional features
- bottlenecks - remove items that interviewer deems out of scope
- scaling - assume high availability is required, add as a use case
- Design a CDN network: http://repository.cmu.edu/cgi/viewcontent.cgi?article=2112&context=compsci 2. Think about constraints:
- Design a random ID generation system: https://blog.twitter.com/2010/announcing-snowflake - ask how many requests per month
- Design a key-value database: http://www.slideshare.net/dvirsky/introduction-to-redis - ask how many requests per second (they may volunteer it or make you do the math)
- Design a function to return the top k requests during past time interval: https://icmi.cs.ucsb.edu/research/tech_reports/reports/2005-23.pdf - estimate reads vs. writes percentage
- Design an online multiplayer card game: http://www.indieflashblog.com/how-to-create-an-asynchronous-multiplayer-game.html - keep 80/20 rule in mind when estimating
- Design a picture sharing system: http://highscalability.com/blog/2011/12/6/instagram-architecture-14-million-users-terabytes-of-photos.html - how much data written per second
- Design a recommendation system: http://ijcai13.org/files/tutorial_slides/td3.pdf - total storage required over 5 years
- Design a URL-shortener system: copied from above: http://www.hiredintech.com/system-design/the-system-design-process/ - how much data read per second
- Design a cache system: https://www.adayinthelifeof.nl/2011/02/06/memcache-internals/ 3. Abstract design:
- layers (service, data, caching)
- infrastructure: load balancing, messaging
- rough overview of any key algorithm that drives the service
- consider bottlenecks and determine solutions
- Exercises:
- Design a CDN network: http://repository.cmu.edu/cgi/viewcontent.cgi?article=2112&context=compsci
- Design a random ID generation system: https://blog.twitter.com/2010/announcing-snowflake
- Design a key-value database: http://www.slideshare.net/dvirsky/introduction-to-redis
- Design a function to return the top k requests during past time interval: https://icmi.cs.ucsb.edu/research/tech_reports/reports/2005-23.pdf
- Design an online multiplayer card game: http://www.indieflashblog.com/how-to-create-an-asynchronous-multiplayer-game.html
- Design a picture sharing system: http://highscalability.com/blog/2011/12/6/instagram-architecture-14-million-users-terabytes-of-photos.html
- Design a recommendation system: http://ijcai13.org/files/tutorial_slides/td3.pdf
- Design a URL-shortener system: copied from above: http://www.hiredintech.com/system-design/the-system-design-process/
- Design a cache system: https://www.adayinthelifeof.nl/2011/02/06/memcache-internals/
- [ ] **About Google**: - [ ] **About Google**:
- [ ] How Search Works: - [ ] How Search Works:

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