| 1 |
Design a File System (10x) |
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| 2 |
Design a Distributed Monitoring System (5x) |
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| 3 |
Design a Stock Market Application (4x) |
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| 4 |
Design an Online Chess Game System (4x) |
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| 5 |
Design a meeting scheduler (3x) |
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| 6 |
Design a Photocache (3x) |
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| 7 |
Design a URL Shortener System (3x) |
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| 8 |
Design a data aggreagator and generate insights from it (2x) |
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| 9 |
Design a Data Structure which provides insert (2x) |
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| 10 |
Design a distributed cache (2x) |
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| 11 |
Design a distributed logging system (2x) |
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| 12 |
Design a Feed notification service (2x) |
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| 13 |
Design a key-value based DB (2x) |
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| 14 |
Design a like counter service (2x) |
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| 15 |
Design a notification System - HLD + LLD Both (2x) |
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| 16 |
Design a scalable OTP system (2x) |
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| 17 |
Design a Aeroplane landing scheduling System |
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| 18 |
Design a API or a set of APIs that can schedule multiple task |
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| 19 |
Design a Board Game for Ludo |
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| 20 |
Design a bug reporting system |
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| 21 |
Design a Cache Service with pluggable eviction strategies |
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| 22 |
Design a Calendar feature (Calendar from MS office Outlook 365) |
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| 23 |
Design a chat application for customer service + behavioural questions |
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| 24 |
Design a chatting system like iMessage |
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| 25 |
Design a Chess Board |
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| 26 |
Design a city name search system |
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| 27 |
Design a collection data structure without using existing collections library |
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| 28 |
Design a comprehensive data model which captures cricket tournament information |
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| 29 |
Design a data pipeline where you dump data for each day in s3 storage |
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| 30 |
Design a datastructure for stream event storage |
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| 31 |
Design a DB for a Supply chain management system/ Warehouse |
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| 32 |
Dynamic Questionnaire System |
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| 33 |
Design a elevator |
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| 34 |
Design a entity diagram for a online library management application |
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| 35 |
Feature Management System |
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| 36 |
Design a garbage collector |
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| 37 |
Design a goal-tracking productivity library that helps users break long-term |
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| 38 |
Design a HashMap with custom O(1) operations |
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| 39 |
Design a HLD for a system similar to Voting system |
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| 40 |
Design a key-value store along with its possible interfaces |
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| 41 |
Design a Key Value store like Dyanamo DB |
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| 42 |
Design a Leaderboard for a gaming company which has 'n' number of games |
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| 43 |
Design a lift and ATM system but not explicitly told or could understand |
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| 44 |
Design a logging and monitoring system for distributed applications /services |
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| 45 |
Design a Logging and Password Management System |
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| 46 |
Design a meeting scheduler where a user can schedule meetings with multiple |
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| 47 |
Design a Message Broker |
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| 48 |
Design a news app portal having news source from multiple source |
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| 49 |
Design a platform similar to leetcode |
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| 50 |
Design a popular mobile apps (won\'t name the app) ReST API strcuture and all |
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| 51 |
Design a rate limiter with a few requirements |
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| 52 |
Design a scalable web platform for an e-commerce admin portal used by |
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| 53 |
Design a schema for hours spent on application using check in and check out |
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| 54 |
Design a service A that connects to a 3rd party service |
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| 55 |
Design a service in cloud which schedules jobs |
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| 56 |
Design a Service that is used to verify a given URL is malicious or not |
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| 57 |
Design a service to manage n job types |
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| 58 |
Design a simple memory manager |
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| 59 |
Design a small web service for tracking some stats |
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| 60 |
Design a stock market service (Both HLD and LLD) |
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| 61 |
Design a system and define storage mechanism for the same |
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| 62 |
Design a system for folder sync which has 100s of files |
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| 63 |
Bus Route Deviation Alert |
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| 64 |
Restaurant Management Platform |
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| 65 |
Design a system for their internal application |
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| 66 |
Design a system for Unique Id generator in a Distributed system |
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| 67 |
Design a system that assigns ranges to each request from a server |
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| 68 |
Design a system to check if your friends are online or not |
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| 69 |
Design a system to upload multiple format files and store their metadata |
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| 70 |
Design a system using one of Microsoft products but with heavy focus on |
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| 71 |
Design a threaded commenting system for Hotstar similar to the one present |
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| 72 |
Translation service |
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| 73 |
Design a UI with functionality and mockup(snapshot gif provided) given using |
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| 74 |
Design a URL shortener with deep dive on multi region deployments |
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| 75 |
Design a voting system with about 100M users who will use it in a space of 1 |
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| 76 |
Design a Weather App |
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| 77 |
Design a Web crawler first HLD and then LLD |
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| 78 |
Design an API that handles idempotency |
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| 79 |
Square Drawing App |
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| 80 |
Design an auto search and display top 10 items for a given keyword |
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| 81 |
Design an autocomplete search engine for millions of users |
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| 82 |
Design an entire HLD of my current project on whiteboard |
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| 83 |
Event bus |
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| 84 |
Design an extensions store |
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| 85 |
Design an ingestion service |
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| 86 |
Design an iterator with MoveNext and HasNext functions |
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| 87 |
Design an online checker to a messaging app |
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| 88 |
Design an ordering service for Microsoft so that companies can buy licenses |
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| 89 |
Design an Undo/Redo mechanism for a text editor with configurable limits |
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| 90 |
Design the API in such a way that it could fulfill multiple type of queries |
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| 91 |
Design the autocorrect solution for editors |
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| 92 |
Design the database schema for storing policies |
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| 93 |
Design the database structure |
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| 94 |
Design the flight booking experience for MakeMyTrip (MMT) using generative AI |
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| 95 |
Design the hotel booking system |
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| 96 |
Design the request and response functionality and check correctness of your |
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