DJDeepak Jaininmarkdownsimplified.hashnode.dev·15h ago · 6 min readBuilding a Payment Pipeline That Doesn't Lose MoneyIf you've ever built a payment feature, you know the fear. It's not "will this work?" It's "what happens the one time it doesn't?" A payment button looks simple from the outside. Tap, pay, done. But u00
TFTheophilus Frimponginlittlegod.hashnode.dev·3d ago · 6 min readThe Retry Trap: Why I Added Exponential Backoff to My Job QueueDid you know that retrying when a job fails can be more harmful than you anticipate? The first instinct for every developer is to retry when a job has failed and that is usually recommended, right? I 00
DJDeepak Jaininmarkdownsimplified.hashnode.dev·6d ago · 6 min readHow to Design APIs That Don't Make Your Frontend Hate YouThere's a conversation that happens on almost every software team. The backend developer says: "The API is ready." The frontend developer calls it, gets the response, and then spends the next two days00
DJDeepak Jaininmarkdownsimplified.hashnode.dev·Jul 5 · 6 min readYou've Been Doing System Design Without Knowing ItLet me guess. You've heard "system design" thrown around in senior developer job descriptions, in interview prep videos, in conversations between architects in conference rooms you weren't invited to.00
ASAnik Sikderinaniksikder.hashnode.dev·Jul 1 · 5 min readWhy HTTP/1.1 Eventually Became a BottleneckTo understand HTTP/2 and HTTP/3, we first need to understand the problem they were designed to solve. Many developers think protocol upgrades happen because engineers want newer technology. In reality00
BBeckyinbeckybuilds.hashnode.dev·Jun 29 · 15 min readDesigning a Crawler That Beats Three Tiers of Anti-Bot — From TLS Fingerprints to CDP DetectionAn engineering log of building a Threads marketing agent, split into two parts. Part 1 (this post): The data-acquisition layer — a crawler designed around an anti-bot threat model Part 2: The genera01O
BBeckyinbeckybuilds.hashnode.dev·Jun 29 · 15 min readDesigning a Generation Pipeline — A 4-Axis Content Model, Queue-Based Scheduling, 3-Layer AttributionAn engineering log of building a Threads marketing agent, split into two parts. Part 1: The data-acquisition layer — a crawler designed around an anti-bot threat model (TLS fingerprint · CDP detectio00
LMLakshitha Minbeyond-models.hashnode.dev·Jun 27 · 3 min readMachine Learning Engineering Starts Where Model Training EndsThe Illusion of Completion For a long time, I thought building machine learning systems was mostly about training models. University courses reinforced that idea. Most assignments ended when the model00
MMaverickinjyanshu.hashnode.dev·Jun 22 · 7 min readMediator PatternThe Mediator Pattern is a behavioral design pattern that centralizes communication between objects. Instead of objects talking to each other directly (which creates a tangled web of dependencies), the00
APAbheeshta Pinabheeshta-bts-tech.hashnode.dev·Jun 2 · 4 min readUnderstanding HTTP, Statelessness, and Why We Needed Redis, JWT, and API GatewaysEver wondered how a website knows you're using Chrome vs Firefox… or mobile vs desktop? Or how it remembers you're logged in even after refreshing the page? The answer is simple—and slightly unintuiti00