Ready when you are

Let’s
boot it.

The whole portfolio, as a working operating system in your browser. No account, no install.

Enter ZavedOS
boot.log

$ load window manager[ ok ]

$ load dock and spotlight[ ok ]

$ load 18 apps[ ok ]

$ load zarbis assistant[ ok ]

$ load wallpapers[ ok ]

→ ready

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zaved.engineer@gmail.com
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Home/Blog

Notes from the trenches.

Practical write-ups on React, Node.js, databases, mobile apps and shipping to production.

76 articles

01All articles

  • 49TCP's Hidden Killers: Why Your API Is Slower Than It Should BeEvery millisecond your API wastes, TCP might be the silent culprit — shaking hands and buffering data while your users rage-quit. Let's expose what's really killing your latency.Apr 6, 2026
    tcp
  • 50From Zero to Live Server: Setting Up Your First VPS Step by StepA VPS sounds intimidating, but trust me — by the end of this guide, you'll have a live server running and wonder why you waited so long.Apr 5, 2026
    vps setup
  • 51VPS Explained: The Private Slice of Server You Didn't Know You NeededStill sharing server space with hundreds of strangers? A VPS gives you your own private corner of the internet—and it's way more affordable than you think.Apr 5, 2026
    vps
  • 52WebSockets Exposed: Handshakes, Frames, and the Load Balancer Killing Your AppYour WebSocket connection didn't just "drop" — your load balancer silently murdered it. Here's what's really happening beneath the surface, and how to stop it.Apr 5, 2026
    websockets
  • 53Redis Rate Limiters Break in Surprising Ways—Here's How to Build Them RightMost Redis rate limiters look fine in testing, then silently fail under real traffic—and the bugs are sneakier than you'd expect.Apr 5, 2026
    redis
  • 54Postgres EXPLAIN ANALYZE Is Gaslighting You: Read Plans CorrectlyYour query is slow, you run EXPLAIN ANALYZE, and Postgres hands you a "plan" — but what if it's quietly lying to your face? Here's what those numbers actually mean.Apr 5, 2026
    postgresql
  • 55VPS Chaos? Tame Multiple Sites with These 5 Killer Deployment TipsAre you tired of juggling multiple sites on your Virtual Private Server? Discover how these 5 simple deployment tips can turn your VPS chaos into a well-oiled machine and give you back control over your web empire!Apr 5, 2026
    vps deployment
  • 56Design APIs Like You'll Be the One Using Them at 2 AMYou've cursed at a terrible API at 2 AM. Don't be the one who built it. Here's how to design APIs developers actually love.Apr 5, 2026
    api design
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