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Top 32 System Design Questions

22 high-level design problems and 10 low-level design problems, with the companies that ask them and a reference article and video for each. Work through the HLD list for architecture rounds and the LLD list for machine coding.

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HLD

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LLD

	Problem	Companies	Level
1.	Design a Rate Limiter	StripeUberAmazonGoogle+3	HLD
2.	Design TinyURL	AmazonGoogleMicrosoftMeta+4	HLD
3.	Design Twitter	MetaTwitter/XUberMicrosoft+4	HLD
4.	Design YouTube	GoogleNetflixAmazonMeta+4	HLD
5.	Design Google Drive	GoogleDropboxMicrosoftAmazon+3	HLD
6.	Design Google Maps	GoogleUberGrabApple+3	HLD
7.	Design a Key-Value Store	AmazonGoogleMicrosoftUber+4	HLD
8.	Design a Distributed Message Queue	AmazonLinkedInUberConfluent+4	HLD
9.	Design a News Feed System	MetaLinkedInTwitter/XInstagram+3	HLD
10.	Design Stock Exchange System	Goldman SachsMorgan StanleyJPMorganRobinhood+4	HLD
11.	Design Google Docs	GoogleAtlassianMicrosoftNotion+3	HLD
12.	Design a Web Crawler	GoogleMicrosoftAmazonUber+3	HLD
13.	Design Tinder	Match GroupBumbleUberMeta+3	HLD
14.	Design ChatGPT System	OpenAIMicrosoftGoogleMeta+3	HLD
15.	Design a Hotel Booking System	AirbnbBooking.comExpediaMakeMyTrip+3	HLD
16.	Design Netflix	NetflixAmazon PrimeDisney+Hulu+3	HLD
17.	Design Reddit	RedditMetaPinterestTwitter/X+2	HLD
18.	Design Uber	UberLyftGrabOla+4	HLD
19.	Design WhatsApp	MetaTelegramDiscordGoogle+3	HLD
20.	Design LeetCode	GoogleAmazonMicrosoftHackerRank+2	HLD
21.	Design Instagram	MetaSnapchatPinterestTikTok+2	HLD
22.	Design TikTok	ByteDanceMetaYouTubeSnapchat+2	HLD
23.	Design Google Docs (Collaborative Editor)	GoogleAtlassianMicrosoftNotion+2	LLD
24.	Design Food Delivery App (Zomato / Swiggy)	ZomatoSwiggyDoorDashUberEats+3	LLD
25.	Design Notification Engine	AmazonFlipkartUberZomato+4	LLD
26.	Design Music Streaming Service (Spotify)	SpotifyAmazonAppleGaana+3	LLD
27.	Design Payment Gateway System	RazorpayStripePaytmPhonePe+4	LLD
28.	Design Quick Commerce App (Zepto / Blinkit)	ZeptoBlinkitSwiggy InstamartFlipkart+3	LLD
29.	Design Dating App (Tinder)	Match GroupBumbleUberMeta+2	LLD
30.	Design Tic Tac Toe Game	AmazonMicrosoftGoogleAtlassian+2	LLD
31.	Design Snake and Ladder Game	AmazonFlipkartSwiggyPhonePe+3	LLD
32.	Design Chess Game	AmazonMicrosoftUberGoogle+3	LLD

System Design Playlists

Full video courses if you need the fundamentals before the problems.

Most Asked Interview Questions

Core CS theory for the rounds before you get to system design.

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System Design Playlists

Most Asked Interview Questions