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iPhone 17 Pro Max vs 18 Pro Max: what changed
Camera, A20 Pro, battery, charging and cooling — where the upgrade is actually noticeable.
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Zhuque-2E: ten satellites in one launch
Why a routine commercial mission matters more than the original methane-rocket record.
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Why a website won’t open: a step-by-step check
DNS, IP, ports, TLS, Nginx, the application and logs — in an order that quickly narrows the search.
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Nginx without magic: how a request finds the right site
Ports, server_name, files and applications — the routing path without mysterious configuration.
Deep dive
Build a website, one layer at a time
Five connected articles from the first page to calm troubleshooting.
01How to build your own website from scratch02Domains and DNS: how a website address finds the right server03Nginx without magic: how the server knows which site to show04HTTPS without scary words: what actually protects the connection05What to do when a website will not open: diagnostics from DNS to the application
Four directions