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103 weekly mock interviews & system-design sessions, 2021 to today. Recordings and slides are open to everyone — no sign-in. Browse by topic.
System Design 87
Ads Logging
Ads Targeting System
Auto Complete for Search
Azure Cosmos Database
Bird's Eye View of Ads Systems
Cloud File Storage
Cloud Storage Service
Cluster and Native Service Management
Consensus Algorithm
Crawler
Customer Review System
data platform for metrics system
Design Auction System
Design Calendar(used)
Design Fitness Coaching Platform
Design Google Calendar
Design Google Drive
Design google photos mobile frontend
Design GoPuff
Design Realtime Comment for Newsfeed
Design Realtime Comment for Newsfeed
Design Slack
Design TinyUrl
Design Uber
Design Uber
Design Uber
Design Yelp
Design YouTube
Design YouTube (used)
Distributed Cache
Distributed Key Value Store
Distributed Key-value Store
Distributed Key-Value Store
Distributed Key-Value Store
Distributed Key-Value Store
Distributed Log Collection (used)
Distributed Message Queue
Distributed Resilient Storage in the Real World
Donation System
Ebay Auction
Ebay Auction (used)
Escalation and Notification System
Go Game
Google Calendar
Google File System, a Planet Scale Distributed File System
Google Flights
Hotel Reservation System
In Memory Key-Value Store
InstaCart Payment
Inventory Management
Inventory management system
Job scheduler
Job Scheduler
Like/Unlike System
Load Balancer
Load Balancer Live Demo
Log Collection System
Machine learning for Facebook Newsfeed
Machine Learning System Architecture and Development Cycle
Metadata Delivery System
Metrics System (Time series DB)
Mobile Application Architecture
Multi-user Chat
Multi-user Chat
Multi-user Chat
News and subscription
Newsfeed
Newsfeed Real Time Comments
Newsfeed Real Time Comments
NoSQL database
notification system
Ordering and Inventoring Management
Rate Limiter
Rate Limiter
Real Time Comments on Facebook
Real time message system
Recommendation System
Restaurant Reservation System
Ride Sharing System
Spam and Abuse Machine Learning System
SQL Database
ticket system
Ticketmaster
TinyURL (used)
TopK
Typeahead Suggestion
Voting System
Machine Learning 8
AI & LLMs 11
AI Agent Coding Showdown
AI Agent for Information Retrieval
AI Automation Framework
Amazon Q - AIGC Assistant
Autonomous AI Agent Development Live
Building Generative AI Applications
From Fantasy to Fact: The Secret Weapon that Crushes AI Hallucinations
From IC Software Engineer to AI Engineering Manager
How LLM Works Under the Hood
LLM in Enterprise Knowledge Management
Responsible AI
Coding & Algorithms 2
Career & Leadership 4
Frontend & Mobile 2
Ads & Monetization 3
AI Agents 4
Caching 2
Databases & Storage 22
Azure Cosmos Database
Cloud File Storage
Cloud Storage Service
data platform for metrics system
Design Google Drive
Design google photos mobile frontend
Design TinyUrl
Distributed Key Value Store
Distributed Key-value Store
Distributed Key-Value Store
Distributed Key-Value Store
Distributed Key-Value Store
Distributed Resilient Storage in the Real World
Google File System, a Planet Scale Distributed File System
In Memory Key-Value Store
Metadata Delivery System
Metrics System (Time series DB)
NoSQL database
SQL Database
TinyURL (used)
TopK
Voting System
Distributed Systems 13
Azure Cosmos Database
Cluster and Native Service Management
Consensus Algorithm
Distributed Cache
Distributed Key Value Store
Distributed Key-value Store
Distributed Key-Value Store
Distributed Key-Value Store
Distributed Key-Value Store
Distributed Log Collection (used)
Distributed Message Queue
Distributed Resilient Storage in the Real World
Google File System, a Planet Scale Distributed File System
E-commerce & Payments 14
GenAI Applications 3
Geo & Maps 6
Messaging & Streaming 8
RAG & Retrieval 3
Real-time & Chat 12
Recommendation & Feed 10
Reliability & Scaling 6
Scheduling & Calendar 7
Search & Indexing 4
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