CCosmosincosmoscribe.hashnode.dev·Jun 12 · 13 min readAuthentication Demystified: Every Login Method, Actually ExplainedBefore we get overwhelmed by the jargon, let's talk about the actual problem we are solving. At some point, every app needs to answer one question: is this person actually who they say they are? That 00
CCosmosincosmoscribe.hashnode.dev·May 31 · 10 min readHow WhatsApp Works Without Internet: Offline Messaging and Sync ExplainedBefore we get overwhelmed by phrases like "eventual consistency" and "offline-first architecture," let's just talk about something you've probably done a hundred times. You're on a train through a tun00
CCosmosincosmoscribe.hashnode.dev·May 31 · 12 min readHow Instagram Stores Your Reels, Photos, and Drafts Without Losing a FrameOk, before we go into the depths of these concepts, I want to tell you that we will take it easy. I don't want you to get overwhelmed by terms like pre-signed URLs, object storage, chunked upload pipe00
CCosmosincosmoscribe.hashnode.dev·May 23 · 16 min readReact Navigation vs Expo Router: Which One Should You Actually Use?Ok, before we go into the depths of these concepts, I want to tell you that we will take it easy. I don't want you to get overwhelmed by the two names sitting in the title. By the end of this, you wil00
CCosmosincosmoscribe.hashnode.dev·May 23 · 19 min readArchitecting Production React Native Apps: How Instagram, WhatsApp, and Uber Think About ScaleOk, before we go into the depths of these concepts, I want to tell you that we will take it easy. I don't want you to get overwhelmed by the company names in the title. We are not cloning Instagram. W00
