## System design interview questions with solutions

> Common system design interview questions with sample discussions, code, and diagrams.
>
> Solutions linked to content in the `solutions/` folder.

| Question | |
|---|---|
|  Design Text snippet sharer (e.g. GitHub Gist, Pastebin.com)  | [Solution](../solutions/system_design/pastebin/README.md) |
| Design the Twitter timeline and search (or Facebook feed and search) | [Solution](../solutions/system_design/twitter/README.md) |
| Design a web crawler | [Solution](../solutions/system_design/web_crawler/README.md) |
| Design personal budget tracking app (Mint.com) | [Solution](../solutions/system_design/mint/README.md) |
| Design the data structures for a social network | [Solution](../solutions/system_design/social_graph/README.md) |
| Design a key-value store for a search engine | [Solution](../solutions/system_design/query_cache/README.md) |
| Design Amazon's sales ranking by category feature | [Solution](../solutions/system_design/sales_rank/README.md) |
| Design a system that scales to millions of users on AWS | [Solution](../solutions/system_design/scaling_aws/README.md) |
| Add a system design question | [Contribute](01_Introduction.md#contributing) |



if you want to review the final high level solutions, after you worked on the exercise
 Go to  [Review solutions](./reminder.md)