Feb. 15, 2022
1. Web Crawler']
2. Detect web crawler https://leetcode.com/discuss/interview-question/system-design/548816/Amazon-or-System-Design-or-Web-Crawler-Detector
3. Yelp
4. Distributed file system
5. URL shortening and Pastebin https://leetcode.com/discuss/interview-question/system-design/124804/Design-Pastebin
6. Instagram
https://leetcode.com/discuss/interview-question/system-design/124802/Design-Instagram
https://leetcode.com/discuss/interview-question/system-design/586749/design-Instagram
7. Dropbox.
8. Twitter
https://leetcode.com/discuss/interview-question/system-design/124689/Design-twitter
10. Youtube or Netflix https://leetcode.com/discuss/interview-question/system-design/733520/Design-YouTube-Very-detailed-design-with-diagrams
https://leetcode.com/discuss/interview-question/system-design/158698/Distributed-database%3A-Netflix
https://leetcode.com/discuss/interview-question/system-design/150607/Design-youtube
11. Ticketmaster
https://leetcode.com/discuss/interview-question/system-design/124803/Design-BookMyShow
12. Facebook Messenger or WhatsApp https://leetcode.com/discuss/interview-question/system-design/585930/Amazon-or-System-Design-or-Design-a-Chat-Service
https://leetcode.com/discuss/interview-question/system-design/220073/How-would-you-design-WhatsApp
13. Typeahead suggesions.
14. Twitter search.
15. Newsfeed ranking
16. Web search.
17. LinkedIn "you may know ..."., https://leetcode.com/discuss/interview-question/system-design/1036762/Google-Onsite-System-Design-How-to-do-it
18. Uber / Luxe (anti-uber)?
19. Freight / delivery orchestration? (edited)
20. Botnet/decentralized web crawler/torrent
21. Coupon redeeming system
22. Message queue kafka, service bus
23. Rate limiter https://leetcode.com/discuss/interview-question/system-design/637402/Design-a-efficient-client-side-rate-limit-handler
https://leetcode.com/discuss/interview-question/system-design/124558/Uber-or-Rate-Limiter
24. Design leetcode - asked in amazon and fb. https://leetcode.com/discuss/interview-question/system-design/649021/Design-Leetcode
26. Large log data collection and processing system
https://leetcode.com/discuss/interview-question/system-design/124603/Amazon-or-Phone-screen-or-How-to-handle-large-log-data
https://leetcode.com/discuss/interview-question/system-design/128037/How-would-you-parse-a-huge-log-file
https://leetcode.com/discuss/interview-question/system-design/820877/Bloomberg-System-Design
27. Realtime stock price monitoring system/ live score update cricbuzz, realtime gaming score
28. Stock trading system https://medium.com/@narengowda/stock-exchange-system-design-answered-ad4be1345851
https://leetcode.com/discuss/interview-question/system-design/820877/Bloomberg-System-Design
29. Kill switch for stopping stock trading https://leetcode.com/discuss/interview-question/system-design/124553/Kill-Switch
30. Design network fail over
https://leetcode.com/discuss/interview-question/system-design/124598/Design-network-fail-over
31. Design AB testing framework https://leetcode.com/discuss/interview-question/system-design/124595/AB-Testing
32. Design parking lot system https://leetcode.com/discuss/interview-question/system-design/124576/Design-a-parking-lot-system.
https://leetcode.com/discuss/interview-question/system-design/575186/Design-a-Parking-Spot-System
https://leetcode.com/discuss/interview-question/system-design/125260/Parking-Lots-Design
33. Reccomendation Engine https://leetcode.com/discuss/interview-question/system-design/124565/Design-Netflix-recommendation-engine
34. Smart voice assistant like siri, alexa
https://leetcode.com/discuss/interview-question/system-design/848252/Amazon-System-Design
35. Nearest store location, another variation of topk https://leetcode.com/discuss/interview-question/system-design/124567/Nearest-Store-Locators
https://leetcode.com/discuss/interview-question/system-design/154172/Design-google-map-database
36. Job scheduling sytem https://leetcode.com/discuss/interview-question/system-design/124697/Walmartlabs-onsite
https://leetcode.com/discuss/interview-question/system-design/124672/Implement-a-task-scheduler
37. Elevator system
https://leetcode.com/discuss/interview-question/system-design/149264/Design-an-Elevator-system
38. Malware detection system https://leetcode.com/discuss/interview-question/system-design/1019028/FB-or-System-Design-or-Multi-Engine-Malware-Analyzer
39. Garbage collector
40. Google docs https://leetcode.com/discuss/interview-question/system-design/148187/System-Design-or-Google-Docs
https://leetcode.com/discuss/interview-question/system-design/148187/System-Design-or-Google-Docs
https://leetcode.com/discuss/interview-question/system-design/208207/Design-a-Google-Sheet-System
https://leetcode.com/discuss/interview-question/system-design/194402/Design-a-file-sharing-system
41. Ecommerce Price checker system https://leetcode.com/discuss/interview-question/system-design/140742/E-commerce-(Amazon)Website-looking-into-other-competitor-Website-products-prices-and-update
42. Notification system https://leetcode.com/discuss/interview-question/system-design/138097/Design-Notification-Service-for-Amazon-Alexa
43. Online ludo game
44. metric monitoring service
45. Ecommerce site ,Shopping cart, product catalog, payment gateway
https://leetcode.com/discuss/interview-question/system-design/776927/Design-an-accountpayment-system
46. Seller summary page https://leetcode.com/discuss/interview-question/system-design/124612/Phone-Interview-Question%3A-Design-an-Seller-Summary-Page
47. Customer who bought this also bought https://leetcode.com/discuss/interview-question/system-design/124557/Amazon's-%22Customers-who-bought-this-item-also-bought%22-recommendation-system
48. Distributed key value store, https://leetcode.com/discuss/interview-question/system-design/1120468/Design-Assignment-or-Implement-a-distributed-Key-Value-(KV)-store-or-SE-Role-Avalara
49. Facebook live commenting
50. Facebook status search
51. Image editing ( asked in fb 2021) https://leetcode.com/discuss/interview-question/system-design/1077411/Facebook-or-Onsite-2021-or-System-Design-or-Design-image-editing
52. File download application system https://leetcode.com/discuss/interview-question/system-design/1071562/Design-a-File-Download-Application-System
53. Proximity server https://leetcode.com/discuss/interview-question/system-design/923677/Facebook-or-System-Design
54. Top N songs, another top k problem
55. Privacy setting at facebook
56. Distributed configuration management system
57. Design gmail https://leetcode.com/discuss/interview-question/system-design/1014986/Google-or-Onsite-or-System-Design%3A-Design-an-Email-system-like-GMAIL
58. News reading feature in alexa https://leetcode.com/discuss/interview-question/system-design/1014181/Amazon-or-System-Design-or-SDE2
59. Ads click visualisation system https://leetcode.com/discuss/interview-question/system-design/1002923/Facebook-or-Online-or-Real-time-data-visualization-for-ads-clicks
60. IoT devices management system https://leetcode.com/discuss/interview-question/system-design/974890/Design-a-system-for-management-of-IOT-devices
61. Timer service https://leetcode.com/discuss/interview-question/system-design/973207/System-Design-or-Timer-service
62. Service monitoring and alerting system like pagerduty, azure monitor etc
https://leetcode.com/discuss/interview-question/system-design/958919/System-Design-Interview-or-Service-Health-Monitoring-and-Alerting-Service
63. Load balancer https://leetcode.com/discuss/interview-question/system-design/943352/Facebook-or-E5-System-Design-Interview-Question-or-Menlo-Park
64. Design undergeound system
65. Leader board table design https://leetcode.com/discuss/interview-question/system-design/892083/Leaderboard-table-system-design-for-online-game
66. Slot booking system for playarena etc https://leetcode.com/discuss/interview-question/system-design/880581/Event-Booking-for-playarenas-Low-level-design
67. Food delivery app https://leetcode.com/discuss/interview-question/system-design/874074/Food-Delivery-App-or-Low-Level-Design-or-Interview-Question
68. Online gaming lobby service https://leetcode.com/discuss/interview-question/system-design/874074/Food-Delivery-App-or-Low-Level-Design-or-Interview-Question
69. URL fishing varifier https://leetcode.com/discuss/interview-question/system-design/896312/Google-system-design
70. Design whatsapp/instagram story
71. File sharing with collaborative editing https://leetcode.com/discuss/interview-question/system-design/838085/File-sharing-service-with-collaborative-editing-or-Amazon
72. Stack overflow tags https://leetcode.com/discuss/interview-question/system-design/838025/Design-a-tagging-system-like-tags-used-in-stack-overflow
https://leetcode.com/discuss/interview-question/system-design/307558/Design-Stack-Overflow
74. Github like cloud repo https://leetcode.com/discuss/interview-question/system-design/837383/System-design-of-code-repository-like-github
75. Job posting site https://leetcode.com/discuss/interview-question/system-design/811840/Job-listing-storage-and-search
76. S3/cloud object store https://leetcode.com/discuss/interview-question/system-design/811503/System-design-Object-store-design-like-S3GCS
77. Celebrity timeline generation https://leetcode.com/discuss/interview-question/system-design/810561/Timeline-generation-for-celebrities-or-System-Design-or-Google
78. Kindle service
79. Bidding system https://leetcode.com/discuss/interview-question/system-design/792060/Bidding-System%3A-System-Design-Interview
80. Billing system - asked in fb interview
81. RPC system for client server comm https://leetcode.com/discuss/interview-question/system-design/790034/Client-Server-Communication%3A-System-Design-Interview
82. Autonomous driving system https://leetcode.com/discuss/interview-question/system-design/789961/Design-a-cloud-based-simulationvisualization-platform-for-a-self-driving-cars-company
83. Github code search https://leetcode.com/discuss/interview-question/system-design/789015/Github-%3A-Design-search-feature-in-Github-scale-code-repository
84. Car showroom https://leetcode.com/discuss/interview-question/system-design/785960/Amazon-System-Design-Question
85. Airport boarding gate security https://leetcode.com/discuss/interview-question/system-design/785960/Amazon-System-Design-Question
86. Social graph https://leetcode.com/discuss/interview-question/system-design/782906/Design-a-social-graph
87. Place of interest https://leetcode.com/discuss/interview-question/system-design/777945/Design-a-system-to-source-store-and-display-places-of-interest
89. Grocery store https://leetcode.com/discuss/interview-question/system-design/769578/Amazon-orSystem-Design-or-Amazon-Go-or-suggestion-on-solution-welcome
90. Display ads https://leetcode.com/discuss/interview-question/system-design/761814/Design-number-of-ads-to-show-to-users-on-a-google-search
91. Add badge to peoples spotify account https://leetcode.com/discuss/interview-question/system-design/748408/How-to-design-a-system-to-add-badges-to-people's-Spotify-account
92. Xml to json conversation https://leetcode.com/discuss/interview-question/system-design/743624/System-design-question%3A-Amazon-SDE2%3A-Large-xml-files-to-json-conversion
93. Ocr web app https://leetcode.com/discuss/interview-question/system-design/741676/System-Design%3A-OCR-web-app
94. High scale otp generation system https://leetcode.com/discuss/interview-question/system-design/728464/Microsoft-or-Onsite-or-Modify-an-OTP-generation-system-to-handle-more-requests
95. Distributed counter https://leetcode.com/discuss/interview-question/system-design/685310/Microsoft-virtual-or-Design-distributed-counter
https://leetcode.com/discuss/interview-question/system-design/277606/Design-a-performance-counter
96. Scan for viruses in uploaded file https://leetcode.com/discuss/interview-question/system-design/659875/Design-a-system-where-client-can-upload-a-file-and-viruses-need-to-be-scanned
97. Log processing at scale https://leetcode.com/discuss/interview-question/system-design/622704/Design-a-system-to-store-and-retrieve-logs-for-all-of-eBay
98. London travel card system https://leetcode.com/discuss/interview-question/system-design/617408/Marshall-Wace-or-Onsite-or-How-would-you-design-Oyster-(London-Travel-Card-system)tion
99. Payment system for newyork MTA https://leetcode.com/discuss/interview-question/system-design/305388/Design-a-transportation-payment-System.
100. Ad click counter https://leetcode.com/discuss/interview-question/system-design/584458/Facebook-or-System-Design-or-Ad-Click-Counter
101. Design slack https://leetcode.com/discuss/interview-question/system-design/582975/Design-Slack
https://leetcode.com/discuss/interview-question/system-design/339849/System-Design-or-Slack
102. Wikipedia https://leetcode.com/discuss/interview-question/system-design/574872/Wikipedia-or-DBsystem-design-thoughts
103. ML related system design https://leetcode.com/discuss/interview-question/system-design/566057/Machine-Learning-System-Design-%3A-A-framework-for-the-interview-day
104. Windows update https://leetcode.com/discuss/interview-question/system-design/560512/System-Design-Question
105. People also searched for https://leetcode.com/discuss/interview-question/system-design/559481/Amazon-or-System-design-or-SDE-2-India smiliar to linkedin's you may also know
106. Cashback processing system https://leetcode.com/discuss/interview-question/system-design/543041/Design-cashback-processing-system
107. Pub sub arch
108. Google or amazob book preview https://leetcode.com/discuss/interview-question/system-design/538295/Design-Google-Books-preview-Amazon-Books-look-inside
109. Design copy right detection https://leetcode.com/discuss/interview-question/system-design/530031/FAANG-Interview-Question-Design-a-copyright-detection-system
111. Facebook nearby friends https://leetcode.com/discuss/interview-question/system-design/430926/Design-Nearby-Friends
112. Google photos home page https://leetcode.com/discuss/interview-question/system-design/398523/System-Design-Google-photos-homepage
https://leetcode.com/discuss/interview-question/system-design/396949/System-Design-Google-Photos
113. Image upload system https://leetcode.com/discuss/interview-question/system-design/391183/Ebay-System-Design-Question
https://leetcode.com/discuss/interview-question/system-design/390503/Google-or-System-Design
114. Facebook translator service https://leetcode.com/discuss/interview-question/system-design/386322/Design-a-translator-service-for-facebook
115. System for health care data https://leetcode.com/discuss/interview-question/system-design/368245/Design-Service-to-Interface-with-Healthcare-Data
116. Health score app https://leetcode.com/discuss/interview-question/system-design/366754/Amazon-or-System-Design-for-health-score-app
117. Railway reservation system https://leetcode.com/discuss/interview-question/system-design/364965/Railway-Reservation-System
118. Treadmill system https://leetcode.com/discuss/interview-question/system-design/362168/Google-or-Onsite-or-Tread-Mill-System-Design
119. Addressed of entire planet https://leetcode.com/discuss/interview-question/system-design/341980/Amazon-or-System-Design-or-System-to-capture-unique-addresses-in-the-entire-world
120. Gofundme https://leetcode.com/discuss/interview-question/system-design/336089/System-Design-or-GoFundMe
121. Shipping fullfilment https://leetcode.com/discuss/interview-question/system-design/320719/Design%3A-Scalable-Shipping-Fulfillment-Center
122. Flight search API https://leetcode.com/discuss/interview-question/system-design/309853/JSON-structure-for-Flight-search-API
123. Splitwise https://leetcode.com/discuss/interview-question/system-design/306519/System-Design-or-Splitwise
124. Google calendar https://leetcode.com/discuss/interview-question/system-design/305654/System-Design-or-Google-Calendar
125. Fb popular/trending pages https://leetcode.com/discuss/interview-question/system-design/305505/Design-a-most-populartrending-profiles-page
126. Courier service https://leetcode.com/discuss/interview-question/system-design/301423/Design-a-UPS-style-mail-delivery-system
127. Hr portal https://leetcode.com/discuss/interview-question/system-design/289092/Design-an-HR-web-portal-for-Amazon's-recruiting-team
128. Outlook recurring meeting https://leetcode.com/discuss/interview-question/system-design/286891/Design-Outlook-recurring-meeting-system-with-variable-input
129. Communication system for ecom sites https://leetcode.com/discuss/interview-question/system-design/286457/Design-a-communication-platform.
131. Realtime event aggregator https://leetcode.com/discuss/interview-question/system-design/270412/Design-a-Real-Time-Event-Aggregation-System
133. Top shared post https://leetcode.com/discuss/interview-question/system-design/258398/Design-top-shared-post-system-in-5mins1-hour1-day1-week
134. Market place analytics https://leetcode.com/discuss/interview-question/system-design/227797/System-Design-E-Commerce-Marketplace-analytics
135. Top 10 most liked articles https://leetcode.com/discuss/interview-question/system-design/225609/Design-system-which-will-show-top-10-most-liked-articles-within-1524-hours.
136. Auth for multi tenant https://leetcode.com/discuss/interview-question/system-design/225331/Design-authentication-system-to-multi-tenant-environment
https://leetcode.com/discuss/interview-question/system-design/202958/Multi-Tenant-Saas-Architecture
137. Design Changefeed https://leetcode.com/discuss/interview-question/system-design/208888/Design-a-system-to-keep-track-of-changes-in-an-SQL-database
138. Track runners in marathon https://leetcode.com/discuss/interview-question/system-design/200342/Bloomberg%3A-Implement-a-system-to-track-runners-in-a-marathon
139. Hotel booking page this many people visiting https://leetcode.com/discuss/interview-question/system-design/163204/Design-%22How-Many-people-currently-viewing-the-property%22-for-a-E-Commerce-Hotel-Booking-Site
140. Text line editor https://leetcode.com/discuss/interview-question/system-design/124679/Implement-a-Text-Line-Editor
141. Location sharing service https://leetcode.com/discuss/interview-question/system-design/124673/Design-a-Location-Sharing-Android-Application
142. Build system https://leetcode.com/discuss/interview-question/system-design/124807/Design-a-build-system
143. Hourly backup from mobile phone https://leetcode.com/discuss/interview-question/system-design/124792/Design-a-system-that-can-handle-hourly-backups-for-mobile-phones
144. Google help system https://leetcode.com/discuss/interview-question/system-design/125191/Design-the-Google-help-system
