System Design Interview: Design a Ticket Booking System (Ticketmaster)
System Design: Design a Ticket Booking System (Ticketmaster/Fandango) A ticket booking system is a classic system design problem involving seat […]
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.
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System Design Interview: Design a Key-Value Store (Redis/DynamoDB)
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System Design Interview: Design a Load Balancer
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Database Indexing Interview Guide: B-Trees, Composite Indexes, Query Optimization
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System Design Interview: API Design (REST vs GraphQL vs gRPC)
Why API Design Matters in Interviews API design questions appear in senior system design interviews: “Design the Twitter API,” “Design
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System Design Interview: Multi-Region Architecture and Global Replication
Why Multi-Region? Single-region deployments have two problems: (1) Latency — a user in Tokyo making a request to a US-East
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System Design Interview: Time Series Database (Prometheus / InfluxDB)
What Is a Time Series Database? A time series database (TSDB) stores sequences of timestamped values — metrics, sensor readings,
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System Design Interview: Notification Service (Push, SMS, Email at Scale)
Overview A notification service delivers time-sensitive messages to users via push notifications (mobile), SMS, email, and in-app alerts. WhatsApp sends
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System Design Interview: Object Storage (Amazon S3)
What Is Object Storage? Object storage stores unstructured data (images, videos, backups, logs) as discrete objects with a flat namespace
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System Design Interview: Real-Time Analytics Dashboard (ClickHouse / Druid)
What Is Real-Time Analytics? Real-time analytics provides insights on data that is seconds to minutes old — not the hours
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System Design Interview: Live Location Tracking (Uber / Lyft Driver GPS)
Overview Live location tracking ingests continuous GPS updates from millions of mobile devices and serves current location data to nearby
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System Design Interview: E-commerce and Inventory Management System
Core Components An e-commerce system handles product catalog, inventory tracking, shopping cart, order placement, payment processing, and fulfillment. Shopify processes
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System Design Interview: Distributed Message Queue (Kafka / SQS)
Why Message Queues? A message queue decouples producers (services that generate events) from consumers (services that process them), enabling async
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System Design Interview: Real-Time Chat System (WhatsApp / Slack)
Core Requirements A real-time chat system must: deliver messages in under 100ms end-to-end, support 1:1 and group chats, handle offline
System Design
System Design Interview: File Storage and Sync Service (Dropbox)
Designing a file storage and sync service like Dropbox combines chunked file storage, delta sync, conflict resolution, and offline-first architecture.