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Latest Articles
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Amazon VPC Explained: Subnets, Routing, NAT Gateway, Security & Real-World Architecture
Learn Amazon VPC from the basics to real-world AWS architecture. Understand VPC, CIDR, subnets, Availability Zones, route tables, Internet Gateway, NAT Gateway, Security Groups, Network ACLs, VPC endpoints, VPC peering, and multi-AZ networking. Includes practical hands-on labs for building public and private subnets, NAT connectivity, and ALB with private EC2. AWS Documentation
Chakrapani Upadhyaya
Oct 07, 2026 Β· 33 min read
Redis Failure Under Extreme Traffic: How to Prevent a Database Crash When 1 Million Requests Hit at Once
Learn how to design a resilient caching architecture when Redis suddenly goes down and millions of requests fall back to the database. Explore cache stampede, thundering herd, circuit breakers, rate limiting, request coalescing, cache warming, graceful degradation, Redis high availability, TTL strategies, and protecting the database from sudden traffic spikes.
Chakrapani Upadhyaya
Oct 07, 2026 Β· 9 min read
Production Database Disaster: How to Recover 10 Million Deleted Rows Without a WHERE Clause
A real-world database disaster scenario: 10 million rows were accidentally deleted in production because a DELETE query was executed without a WHERE clause. Learn how to respond, stop further damage, identify the recovery point, restore data using backups and transaction logs, perform point-in-time recovery, validate the recovered data, and design safeguards to prevent such incidents in the future.
Chakrapani Upadhyaya
Oct 07, 2026 Β· 31 min read
Designing a High-Scale Railway Ticket Booking System: Handling 2 Million Users for 500 Seats
Learn how to design a highly scalable railway ticket booking system that can handle 2 million users competing for just 500 seats. Explore traffic spikes, virtual queues, rate limiting, seat inventory management, distributed locking, Redis, database consistency, reservation timeouts, payment processing, idempotency, fault tolerance, and strategies to prevent double booking.
Chakrapani Upadhyaya
Oct 07, 2026 Β· 32 min read
Featured Articles
Handpicked content you shouldn't miss
What is Caching?
Caching means storing frequently accessed data in a faster storage layer so that future requests can be served faster without repeatedly accessing the primary database or another slower system.
Chakrapani Upadhyaya Β· Sep 27, 2026 Β· 16 min read
Latest eBooks π
In-depth guides to help you master modern technologies
DSA with JavaScript: 50 Questions with Detailed Explanations
163 pages · by Chakrapani Upadhyaya
React Interview Guide — 50 Questions with Detailed Explanations
147 pages · by Chakrapani Upadhyaya
JavaScript Interview Guide — 50 Questions with Detailed Explanations
118 pages · by Chakrapani Upadhyaya
Generative AI with C#: OpenAI SDK and Gemini
147 pages · by Chakrapani Upadhyaya
Latest Videos
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Chakrapani Upadhyaya
Principal Engineer β’ Architect β’ Creator β’ 15+ Years Technical Architect
Technical Architect with 15+ years building and scaling enterprise platforms in .NET, React, and cloud environments (AWS and Azure). Deep expertise in microservices, event-driven architecture, and legacy modernization, backed by a track record of leading engineering teams of up to 30 across fintech, banking, and governance/compliance SaaS products. Comfortable owning architecture end-to-end and working directly with business stakeholders, architects, and globally distributed teams to ship secure, high-quality software
- π 15+ Years Technical Architect Experience
- π’ Built Scalable Systems at Global Companies
- π Passionate about Teaching and Community
- 𧩠Building Upgradix for Developers
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