Url Shortener
Design a Url Shortener service like bit.ly
Design Rate Limiter
A rate limiter is a system is to prevent a user from making too many requests to a service within a certain time frame. This is used to protect services from abuse and can be implemented in various scopes like per user, per IP address, etc.
Design LeetCode
Design a coding contest platform like LeetCode.
Design Pastebin
Pastebin is an online application where users can store plain text. It is often used by developers to store pieces of sources code or configuration information, but anyone can essentially store any type of text. The idea behind the site is to make it more convenient for people to share large amounts of text online. Each piece of text that is pasted on Pastebin can be accessed through a unique URL
Realtime Monitoring System
Design a realtime server monitoring and alert system like Datadog.
Design Typeahead System
A typeahead system, often called autocomplete, is a feature in software programs that predicts the rest of a word or phrase that a user is typing. This functionality helps users to find and select from a pre-populated list of values as they type, reducing the amount of typing needed and making the input process faster and more efficient.
An everyday example of a typeahead system is Google's search box. As you begin typing your search query, Google provides a dropdown list of suggested search terms that match what you have typed so far. These suggestions are based on popular searches and the content indexed by Google's search engine. This allows you to see and select your intended search without having to type out the entire term, making the search process faster and more efficient.
When a user begins to type in the search box, the typeahead feature could suggest book titles, authors, or genres that match the typed characters. For instance, if the user types in "Har", the system could suggest "Harry Potter", "Harper Lee", etc. This kind of typeahead system can greatly enhance the user experience by providing instant feedback and helping users formulate their search queries.
In this problem, we will design a typeahead system for a large e-commerce site. The system will provide search suggestions to users as they type in the search box. The suggestions will be based on the most popular searches and the content indexed by the e-commerce site's search engine.
A comment system
Design a comment system, such as Disqus, is a feature integrated into websites that allows users to post comments on published content, interact with other users through replies, upvote or downvote comments, and sort or filter comments. This system must be robust, scalable, and efficient to handle a large volume of users and comments.
Design a Realtime Chat App like WhatsApp
Design a chat app like WhatsApp.
Design Dropbox
Design a file hosting service such as Dropbox or Google Drive.
A cloud file hosting service allows users to upload, download, and share files across different platforms.
It should support multiple file types including text, images, and multimedia formats.
For this problem let's focus on the backend system that stores and syncs them between different devices.
Url Shortener
Design a Url Shortener service like bit.ly
Design Rate Limiter
A rate limiter is a system is to prevent a user from making too many requests to a service within a certain time frame. This is used to protect services from abuse and can be implemented in various scopes like per user, per IP address, etc.
Design LeetCode
Design a coding contest platform like LeetCode.
Design Pastebin
Pastebin is an online application where users can store plain text. It is often used by developers to store pieces of sources code or configuration information, but anyone can essentially store any type of text. The idea behind the site is to make it more convenient for people to share large amounts of text online. Each piece of text that is pasted on Pastebin can be accessed through a unique URL
Realtime Monitoring System
Design a realtime server monitoring and alert system like Datadog.
Design Typeahead System
A typeahead system, often called autocomplete, is a feature in software programs that predicts the rest of a word or phrase that a user is typing. This functionality helps users to find and select from a pre-populated list of values as they type, reducing the amount of typing needed and making the input process faster and more efficient.
An everyday example of a typeahead system is Google's search box. As you begin typing your search query, Google provides a dropdown list of suggested search terms that match what you have typed so far. These suggestions are based on popular searches and the content indexed by Google's search engine. This allows you to see and select your intended search without having to type out the entire term, making the search process faster and more efficient.
When a user begins to type in the search box, the typeahead feature could suggest book titles, authors, or genres that match the typed characters. For instance, if the user types in "Har", the system could suggest "Harry Potter", "Harper Lee", etc. This kind of typeahead system can greatly enhance the user experience by providing instant feedback and helping users formulate their search queries.
In this problem, we will design a typeahead system for a large e-commerce site. The system will provide search suggestions to users as they type in the search box. The suggestions will be based on the most popular searches and the content indexed by the e-commerce site's search engine.
A comment system
Design a comment system, such as Disqus, is a feature integrated into websites that allows users to post comments on published content, interact with other users through replies, upvote or downvote comments, and sort or filter comments. This system must be robust, scalable, and efficient to handle a large volume of users and comments.
Design a Realtime Chat App like WhatsApp
Design a chat app like WhatsApp.
Design Dropbox
Design a file hosting service such as Dropbox or Google Drive.
A cloud file hosting service allows users to upload, download, and share files across different platforms.
It should support multiple file types including text, images, and multimedia formats.
For this problem let's focus on the backend system that stores and syncs them between different devices.
System Design School