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News
The Architecture of Ephemeral Media: How to Archive Instagram Stories Without Sacrificing Privacy
3+ hour, 6+ min ago (27+ words) A technical deep-dive into social media caching, CDN delivery pipelines, and the necessity of …...
LLM Inference, Explained: Prefill, Decode, and KV Cache
3+ hour, 6+ min ago (29+ words) Ever wondered what actually happens the second you hit send on ChatGPT or Claude? That near-instant reply isn’t magic. It’s inference …...
How I would design a URL shortener
3+ hour, 44+ min ago (199+ words) Many people wonder why the URL shortener is such a common system design interview question and it’s because the problem looks deceptively simple, while the system …...
Mission-Critical Mobile IAP: Handling Apple App Store & Google Play Notifications with Zero Data Loss
11+ hour, 6+ min ago (480+ words) Both platforms have shipped meaningful changes to these systems recently — new notification types, new API deprecations, and (in Apple's case) new notification categories tied to age-verification laws and alternative-payment regulation. This guide has been updated and fact-checked against current Apple…...
Architecting for Privacy: Building a 100% Offline Geofencing Engine on Android
13+ hour, 57+ min ago (1624+ words) The mid-afternoon sun was hitting the mosque floor, and the room was entirely silent, save for the rhythmic breathing of those in prayer. I had double-checked my phone before entering. Or so I thought. Halfway through the second rak'ah, a…...
Playwright email verification can pass for the wrong reason: six checks for a trustworthy test
14+ hour, 32+ min ago (575+ words) We deliberately made an email-verification test finish on the wrong account. The page said Email verified. Playwright passed. Then we added an assertion for which account had been verified. The same scenario failed. This was a controlled browser experiment with…...
Can You Explain DNS and SSL Clearly? Most Developers Can’t
11+ hour, 3+ min ago (34+ words) Ask a developer: “Can you explain DNS and SSL?” You might hear answers like: DNS is for domain names. SSL makes websites secure. These …...
Você sabe como funcionam os super apps chineses? Um estudo com Flutter
17+ hour, 10+ min ago (316+ words) Você já deve ter ouvido que "o WeChat é seu WhatsApp, seu banco e seu Uber, tudo no mesmo app". Essa... Tagged with braziliandevs, flutter, mobile, architecture....
The code looks convincing at first glance, but when run, the
1+ day, 2+ hour ago (330+ words) KuCoin When you visit any website, it may store or retrieve information on your browser, mostly in the form of cookies. This information might be about you, your preferences, or your device, and is mostly used to make the site…...
How the Web Works: A Journey from URL to Screen
15+ hour, 45+ min ago (411+ words) Before going further, it helps to separate two terms people often use interchangeably. The internet also carries other services like email, file transfer, video calls but the web is by far the most visible one to everyday users. Everything begins…...