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anonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·tech
anonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·tech
anonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·tech
anonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·tech
anonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·tech
anonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·tech
anonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·tech
anonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·tech
anonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·tech
anonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·techanonymous · 23:06 3/6/26 · ORA·tech
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Library/Backend/Mạng máy tính
Medium Pro#network

CORS là gì? Giải thích cơ chế Preflight Request và cách cấu hình an toàn.

February 15, 2026

Quick summary

CORS is a browser security mechanism that relaxes the Same-Origin Policy to allow cross-origin resource access. For complex requests, the browser automatically sends a preliminary OPTIONS request (Preflight) to verify permissions before executing the actual request.

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guest · ORA·techguest · ORA·techguest · ORA·techguest · ORA·techguest · ORA·tech

Sample answer:

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam.

Quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore.

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