9 articles published
Choosing between SQL (Relational) and NoSQL (Non-Relational) databases explained simply. Discover ACID transactions, schema flexibility, vertical vs. horizontal scaling, and how apps like Uber use both.
Why modern apps need a single, secure front entrance instead of letting user devices talk directly to dozens of internal backend services. Explained through a luxury hotel lobby analogy with routing, rate limiting, request aggregation, and SSL termination.
What is Redis and how does in-memory caching work? Explained simply through a study desk vs basement closet analogy, caching patterns (Cache-Aside, Write-Through, Write-Behind), TTL, and LRU eviction.
What is a CDN and how does it work? Explained simply through a neighborhood toy store analogy, with Edge Servers, Cache Hits vs Misses, and Pull vs Push CDNs.
Load balancers explained through a supermarket checkout line analogy: how a Load Balancer routes traffic, health-checks servers, and the difference between Layer 4 and Layer 7 routing.
REST APIs explained through a restaurant analogy (the waiter, the menu, and the kitchen), then a real-world walkthrough of booking a bus seat with GET, POST, PUT, and DELETE.
HTTP vs HTTPS explained simply: what changes, why HTTPS is safer, and how TLS certificates and encryption protect your data online.
TCP vs UDP explained through a careful mailman and a paper-plane launcher, then a real-world guessing game: which protocol powers Netflix, Uber, and WhatsApp?
