System Design Interview: Hotel and Airbnb Booking System
Designing a hotel or home-sharing booking system like Airbnb is a comprehensive system design problem that combines availability calendars, concurrent […]
System Design
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System Design
Learn to design scalable, reliable systems that handle millions of users. System design interviews test your ability to architect real-world applications, considering tradeoffs, scalability, and best practices.
Core Topics:
Scalability: Load balancing, horizontal vs vertical scaling
Storage: Databases (SQL vs NoSQL), caching (Redis, Memcached)
Reliability: Replication, failover, disaster recovery
Performance: CDNs, caching strategies, database indexing
Common Design Questions:
Design URL shortener (bit.ly)
Design rate limiter
Design Twitter/Instagram feed
Design messaging system (WhatsApp)
Design file storage (Dropbox)
Interview Level: Senior engineers (L5+) at FAANG companies. Requires 3-5+ years experience to tackle effectively.
Preparation: Study system design patterns, understand distributed systems fundamentals, and practice mock interviews.
System Design
System Design Interview: Twitter / Social Media Feed Architecture
Designing a social media feed like Twitter is one of the most comprehensive system design problems. The core challenge: how
System Design
System Design Interview: Video Streaming Platform (Netflix/YouTube)
Designing a video streaming platform like Netflix or YouTube is one of the most comprehensive system design challenges, combining video
System Design
System Design Interview: Email Service at Scale (SendGrid/Gmail)
Designing a transactional email service (like SendGrid or AWS SES) or an email client (like Gmail) involves deep distributed systems
System Design
System Design Interview: Autocomplete and Typeahead Service
Designing an autocomplete (typeahead) service is one of the most common system design interview questions, frequently asked at Google, Meta,
System Design
System Design Interview: Machine Learning Platform and MLOps
As machine learning moves from research to production, companies need platforms that manage the full ML lifecycle: data ingestion, feature
System Design
System Design Interview: Ticketing and Seat Reservation System
Designing a ticketing system like Ticketmaster or a seat reservation system for movies/concerts tests your understanding of concurrency, distributed locking,
System Design
System Design Interview: API Gateway and Service Mesh
API gateways and service meshes are the networking backbone of modern microservices architectures. They handle cross-cutting concerns — authentication, rate
System Design
System Design Interview: DNS and Global Load Balancing
DNS and global load balancing are foundational to any internet-scale system. Understanding how DNS resolution works, how GeoDNS routes traffic,
System Design
System Design Interview: Kubernetes and Container Orchestration
Kubernetes is the de facto standard for container orchestration. Understanding its architecture, scheduling model, and operational patterns is increasingly expected
System Design
System Design Interview: Distributed Transactions and Saga Pattern
Maintaining data consistency across multiple microservices is one of the hardest distributed systems problems. Two-phase commit (2PC) ensures ACID guarantees
System Design
System Design Interview: Distributed File System (GFS/HDFS/S3)
Designing a distributed file system (DFS) like HDFS, Google File System, or Amazon S3 is a classic system design interview
System Design
System Design Interview: Recommendation Engine at Scale
Recommendation systems power product discovery at Netflix, Spotify, Amazon, and LinkedIn. Designing one at scale involves a multi-stage architecture that
System Design
System Design Interview: Ride-Sharing Dispatch System (Uber/Lyft)
Dispatch System Requirements A ride-sharing dispatch system matches riders with nearby available drivers in real time. Core requirements: find available
System Design
System Design Interview: WebRTC and Real-Time Video Architecture
WebRTC Architecture Overview WebRTC (Web Real-Time Communication) is an open standard that enables peer-to-peer audio and video in browsers and