You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
95 lines
4.4 KiB
95 lines
4.4 KiB
7 years ago
|
Design Questions
|
||
|
|
==
|
||
|
|
|
||
|
|
## Guides
|
||
|
|
|
||
|
|
- https://github.com/donnemartin/system-design-primer
|
||
|
|
- https://github.com/checkcheckzz/system-design-interview
|
||
|
|
- https://github.com/shashank88/system_design
|
||
|
|
- https://gist.github.com/vasanthk/485d1c25737e8e72759f
|
||
|
|
- http://www.puncsky.com/blog/2016/02/14/crack-the-system-design-interview/
|
||
|
|
- https://www.palantir.com/2011/10/how-to-rock-a-systems-design-interview/
|
||
|
|
- http://blog.gainlo.co/index.php/2017/04/13/system-design-interviews-part-ii-complete-guide-google-interview-preparation/
|
||
|
|
|
||
|
|
## Flow
|
||
|
|
|
||
|
|
#### A. Understand the problem and scope
|
||
|
|
|
||
|
|
- Define the use cases, with interviewer's help.
|
||
|
|
- Suggest additional features.
|
||
|
|
- Remove items that interviewer deems out of scope.
|
||
|
|
- Assume high availability is required, add as a use case.
|
||
|
|
|
||
|
|
#### B. Think about constraints
|
||
|
|
|
||
|
|
- Ask how many requests per month.
|
||
|
|
- Ask how many requests per second (they may volunteer it or make you do the math).
|
||
|
|
- Estimate reads vs. writes percentage.
|
||
|
|
- Keep 80/20 rule in mind when estimating.
|
||
|
|
- How much data written per second.
|
||
|
|
- Total storage required over 5 years.
|
||
|
|
- How much data reads per second.
|
||
|
|
|
||
|
|
#### C. 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.
|
||
|
|
|
||
|
|
Source: https://github.com/jwasham/coding-interview-university#system-design-scalability-data-handling
|
||
|
|
|
||
|
|
## Grading Rubrics
|
||
|
|
|
||
|
|
- Problem Solving - How systematic is your approach to solving the problem step-by-step? Break down a problem into its core components.
|
||
|
|
- Communication - How well do you explain your idea and communicate it with others?
|
||
|
|
- Evaluation - How do you evaluate your system? Are you aware of the trade-offs made? How can you optimize it?
|
||
|
|
- Estimation - How fast does your system need to be? How much space does it need? How much load will it experience?
|
||
|
|
|
||
|
|
## Specific Topics
|
||
|
|
|
||
|
|
- URL Shortener
|
||
|
|
- http://stackoverflow.com/questions/742013/how-to-code-a-url-shortener
|
||
|
|
- http://blog.gainlo.co/index.php/2016/03/08/system-design-interview-question-create-tinyurl-system/
|
||
|
|
- https://www.interviewcake.com/question/python/url-shortener
|
||
|
|
- Collaborative Editor
|
||
|
|
- http://blog.gainlo.co/index.php/2016/03/22/system-design-interview-question-how-to-design-google-docs/
|
||
|
|
- Photo Sharing App
|
||
|
|
- http://blog.gainlo.co/index.php/2016/03/01/system-design-interview-question-create-a-photo-sharing-app/
|
||
|
|
- Social Network Feed
|
||
|
|
- http://blog.gainlo.co/index.php/2016/02/17/system-design-interview-question-how-to-design-twitter-part-1/
|
||
|
|
- http://blog.gainlo.co/index.php/2016/02/24/system-design-interview-question-how-to-design-twitter-part-2/
|
||
|
|
- http://blog.gainlo.co/index.php/2016/03/29/design-news-feed-system-part-1-system-design-interview-questions/
|
||
|
|
- Trending Algorithm
|
||
|
|
- http://blog.gainlo.co/index.php/2016/05/03/how-to-design-a-trending-algorithm-for-twitter/
|
||
|
|
- Facebook Chat
|
||
|
|
- http://blog.gainlo.co/index.php/2016/04/19/design-facebook-chat-function/
|
||
|
|
- Key Value Store
|
||
|
|
- http://blog.gainlo.co/index.php/2016/06/14/design-a-key-value-store-part-i/
|
||
|
|
- http://blog.gainlo.co/index.php/2016/06/21/design-key-value-store-part-ii/
|
||
|
|
- Recommendation System
|
||
|
|
- http://blog.gainlo.co/index.php/2016/05/24/design-a-recommendation-system/
|
||
|
|
- Cache System
|
||
|
|
- http://blog.gainlo.co/index.php/2016/05/17/design-a-cache-system/
|
||
|
|
- E-commerce Website
|
||
|
|
- http://blog.gainlo.co/index.php/2016/08/22/design-ecommerce-website-part/
|
||
|
|
- http://blog.gainlo.co/index.php/2016/08/28/design-ecommerce-website-part-ii/
|
||
|
|
- Web Crawler
|
||
|
|
- http://blog.gainlo.co/index.php/2016/06/29/build-web-crawler/
|
||
|
|
- http://www.makeuseof.com/tag/how-do-search-engines-work-makeuseof-explains/
|
||
|
|
- https://www.quora.com/How-can-I-build-a-web-crawler-from-scratch/answer/Chris-Heller
|
||
|
|
- YouTube
|
||
|
|
- http://blog.gainlo.co/index.php/2016/10/22/design-youtube-part/
|
||
|
|
- http://blog.gainlo.co/index.php/2016/11/04/design-youtube-part-ii/
|
||
|
|
- Hit Counter
|
||
|
|
- http://blog.gainlo.co/index.php/2016/09/12/dropbox-interview-design-hit-counter/
|
||
|
|
- Facebook Graph Search
|
||
|
|
- Design [Lyft Line](https://www.lyft.com/line).
|
||
|
|
- Design a promo code system (with same promo code, randomly generated promo code, and promo code with conditions).
|
||
|
|
- Model a university.
|
||
|
|
- How would you implement Pacman?
|
||
|
|
- Sketch out an implementation of Asteroids.
|
||
|
|
- Implement a spell checker.
|
||
|
|
- Design the rubik cube.
|
||
|
|
- Design a high-level interface to be used for card games (e.g. poker, blackjack etc).
|