LDLakshay Dhoundiyalinlakshaydhoundiyal.hashnode.dev·19h ago · 12 min readHow Does Uber Find Your Driver in Seconds? The System Design Behind UberYou open Uber. Enter your destination. Tap “Confirm Ride.” 🚗 A few seconds later, your screen shows: “Driver found.” You can see the driver's name, vehicle, location, and estimated arrival time. It f10
AUAman Upadhyayindev-jedi.hashnode.dev·5h ago · 7 min readSerialization and Deserialization in BackendIn the previous blogs, we've talked about HTTP, requests and responses, and how routing helps a backend decide where an incoming request should go. But there's another interesting question here. Let's00
BLBhavy Ladaniinbhavycodes.hashnode.dev·7h ago · 9 min readHow Authenticator Apps Generate Codes Without InternetHave you ever put your phone on Airplane Mode and noticed that Google Authenticator or Microsoft Authenticator can still generate a new 6-digit code every 30 seconds? That raises a pretty interesting 00
HBHuman Business Worksinhumanbusinessworks.hashnode.dev·1d ago · 6 min readWhy Code Review Becomes a Bottleneck Once Engineers Span Time ZonesThe one-day PR that takes four days A pull request that would get reviewed in twenty minutes on a co-located team can sit for a full business day once the author and the reviewer are eight hours apart00
SCSnigdha Chatterjeeinsnigdha-tech-journey.hashnode.dev·1d ago · 8 min readWhat I Learned Before My First Day of B.Tech CSEIntroduction Standing at the threshold of college life is both exciting and uncertain. As I prepare to begin my Bachelor of Technology journey in Computer Science and Engineering (CSE), I have realize00
SKSahil Khuranaininnostaxengineering.hashnode.dev·2d ago · 5 min readTop 5 PHP Frameworks for Web Development in 2025PHP remains one of the most battle-tested server-side languages on the web. From WordPress to Shopify, major platforms have trusted it for security, performance, and scale. But choosing a framework fr00
TDTiger Dataintigerdata.hashnode.dev·3d ago · 11 min readWhat pg_stat_statements Actually Tells You About Your QueriesOriginally published on August 7, 2026. Written by NanoHertz Communications. Your slowest query is rarely your most expensive one. A 4-second report that runs twice a day costs your database 8 seconds00
SKSahil Khuranaininnostaxengineering.hashnode.dev·3d ago · 10 min readTop Essential Tools for AngularJS Developers in 2025Let me get a frustration out of the way first. There are dozens of "Angular tools 2025" articles recommending Augury, listing Protractor, treating Karma like it's still the right choice. Some of these00
HBHuman Business Worksinhumanbusinessworks.hashnode.dev·3d ago · 6 min readDesigning an On-Call Rotation a Three-Person Team Can Actually SurviveThe Problem With Copying Big-Company On-Call Most on-call advice assumes a bench. Google's Site Reliability Engineering book, one of the more widely cited references on the topic, describes sustainabl00
HBHuman Business Worksinhumanbusinessworks.hashnode.dev·3d ago · 6 min readThe Second Engineer Changes the Job in Ways the First One Didn'tThe First Hire Doesn't Really Test You When a technical founder hires their first engineer, the day-to-day doesn't change as much as people expect. The founder is still writing code. They're still in 00
