cloudmato.com is a research-driven technology blog. Every article is written from live web sources with cited references — covering web development, browser internals, networking, security, databases, distributed systems, and the AI tools and models changing how software gets built.

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Every Way to Cache Data for Websites and Web Apps
Every Way to Cache Data for Websites and Web Apps
Every request your app serves is a chance to do less work. Caching is just the art of not redoing work you already did. Sounds simple. It isn’t — there’s a whole stack of places you can stash data, each with its own rules, and picking the wrong layer (or the wrong expiry) costs you either stale bugs or a slow site. I’ve spent enough hours staring at a page that “should have updated” but didn’t, only to realise the answer was cached three layers deep. So let me walk through every place you can cache — from the user’s browser all the way down to compiled bytecode on your server — and where each one bites you.
cachingweb-performancebackend
HATEOAS: What It Is and Why Almost No One Uses It
HATEOAS: What It Is and Why Almost No One Uses It
Everyone is building “REST APIs” nowadays. You have got endpoints, you return JSON, you use GET and POST and DELETE, you send back 404 when something is missing. Congratulations, you have a REST API. Right? Well, according to the person who literally coined the term REST, probably not. And the piece you are missing is a scary-looking acronym called HATEOAS — the one part of REST that almost nobody implements and most people can’t even spell. I have been writing APIs for more than 8 years and honestly, for the longest time I treated HATEOAS as academic trivia. So let me untangle it: what it is, why the industry collectively ignores it, and the more interesting question — when you actually earn the right to call your thing a REST API.
restapi-designhateoas
Build Redis From Scratch: Data Structures & System Design
Build Redis From Scratch: Data Structures & System Design
Redis is one of those rare pieces of software where the source code is short enough to actually read and deep enough to teach you something new every time. I’ve spent a good amount of time going through the actual Redis source — and what strikes me every time is how deliberately every design choice was made. Nothing is accidental. So let’s actually design one from the ground up — not a toy, but an architecture that mirrors what Redis actually does. Data structures, event loop, protocol, expiry, persistence. All of it.
redissystems-designdata-structures
Secure Auth for SPAs: SSO, MFA, and Token Refresh
Secure Auth for SPAs: SSO, MFA, and Token Refresh
The browser is a hostile environment. That one sentence explains more about why SPA authentication goes wrong than any whitepaper ever has. You’re shipping your entire application — including your auth logic — to a machine you don’t control, in a runtime where malicious scripts, rogue browser extensions, and network-level attackers are all operating in the same sandpit. Get the design wrong and you’re not just leaking a JWT. You’re handing over session persistence, user identity, and trust — all at once.
authenticationsecuritySPA
50+ Micro Frontends: Monorepo, Runtime Integration & Zero Conflicts
50+ Micro Frontends: Monorepo, Runtime Integration & Zero Conflicts
Fifty teams shipping frontend code independently sounds like a dream. Then React 17 and React 18 collide at runtime, your design system has six competing “latest” versions in production simultaneously, and a shared header owned by nobody quietly breaks for 30% of your users. This is the real problem with micro frontends at scale. The pattern isn’t complicated. The governance layer — the shared kernel, versioning contracts, the theming system that can’t shatter when Team 47 deploys on a Friday — that’s where things fall apart. Here’s how to actually structure it.
micro-frontendsmonorepomodule-federation
Video Output Ports History: VGA, HDMI, DisplayPort & USB-C
Video Output Ports History: VGA, HDMI, DisplayPort & USB-C
The cable behind your monitor has a more dramatic history than most people realize. Every decade or so, some group of companies decides the current standard is holding them back, invents something new, and the industry spends the next ten years transitioning — leaving everyone with a drawer full of adapters they’ll never use again. Here’s why that happened, and why it’ll probably keep happening. The Analog Jungle: Composite, S-Video, and Component Before there was HDMI or DisplayPort, there was a mess of analog standards that ran televisions and early home electronics for decades. Each one existed because the previous one was genuinely not good enough.
hardwaredisplayhistory
Logging Best Practices for Production Troubleshooting
Logging Best Practices for Production Troubleshooting
It’s 3am. PagerDuty is screaming. Checkout is failing for some customers but not others. You SSH into a box, tail the logs, and you’re greeted with a wall of INFO: processing request lines with no order ID, no user ID, no trace of which downstream service choked. Now you’re not debugging — you’re archaeology. I’ve been on the other side of that night more times than I’d like to admit. And honestly, the difference between a 5-minute fix and a 3-hour outage is almost never the bug itself. It’s whether your logs told you anything useful. So let’s talk about what good logging actually looks like — not the textbook “log everything” advice, but the stuff that saves you when production is on fire.
loggingobservabilitydevops
Why PowerShell Exists When CMD Was Already There
Why PowerShell Exists When CMD Was Already There
You open Windows 11, right-click the Start menu, and you see: Command Prompt, PowerShell, Windows Terminal. Three things. You just wanted to run a quick command. Now you’re questioning your life choices. This confusion is real, and honestly, Microsoft did not make it easy. But there’s a genuinely good reason PowerShell exists — and once you understand it, the whole picture starts to make sense. CMD Was Never Really a Shell — It Was a Stopgap Let’s start at the beginning. cmd.exe — the Command Prompt — has been around since Windows NT launched in December 1987 [1]. Before that, COMMAND.COM handled things in MS-DOS. So yeah, Windows has had a command-line interface for nearly 40 years.
powershellwindowscommand-line
Module Federation in UI: The Good, Bad, and Ugly
Module Federation in UI: The Good, Bad, and Ugly
At some point in a large enough frontend codebase, the build itself becomes the bottleneck. Thousands of components, dozens of teams, one monolithic bundle — something has to give. Module Federation is one of the more interesting solutions people have reached for, and it’s worth understanding properly before you commit to it. What Is Module Federation? Module Federation is a feature introduced in Webpack 5 that lets JavaScript applications dynamically load code from other JavaScript applications at runtime — not at build time [1]. That single distinction is what makes it different from everything else.
module federationmicro frontendswebpack
Module Federation with Vite: What Works, What Doesn't
Module Federation with Vite: What Works, What Doesn't
Module Federation is one of those concepts everyone name-drops the moment “micro frontends” comes up in a meeting. Cool, share code at runtime, deploy teams independently, sounds great. Then someone on the team says “we’re on Vite, not webpack” and the whole conversation gets awkward. So what actually happens when you try to bring Module Federation into a Vite project? Some of it works beautifully. Some of it… really doesn’t, at least not yet.
ViteModule FederationMicro Frontends