Phần 4: Content delivery & tăng tốc website Part 4: Content delivery & website speed · Bài 1/4 Lesson 1/4

CDN & cache hit/miss CDN & cache hit/miss

Hiểu HIT tại PoP vs MISS về origin. Cache static assets; không cache HTML có session. Understand PoP HIT vs MISS to origin. Cache static assets; do not cache HTML with sessions.

Các bước thực hiện Step-by-step

Caching → Configuration: xem Cache Rules mặc định. Caching → Configuration: review default Cache Rules.
Mở Caching → Cache Rules: cache static (/assets/*, *.css, *.js). Caching → Cache Rules: cache static paths (/assets/*, *.css, *.js).
Bypass cache cho /admin, /checkout, cookie session. Bypass cache for /admin, /checkout, session cookies.
Kiểm tra response header `CF-Cache-Status`: HIT vs MISS. Check response header `CF-Cache-Status`: HIT vs MISS.

Giải thích chi tiết Detailed explanation

CDN cache giảm latency và chi phí origin — nhưng cache nhầm HTML có session sẽ lộ data user. CDN cache cuts latency and origin cost — but caching session HTML leaks user data.

Lưu ý (best practices) Note (best practices)

Bật Tiered Cache (có trên mọi gói) — cache gần user hơn, giảm request về origin và tăng cache hit ratio. Enable Tiered Cache (included on every plan) — content is cached closer to users, reducing origin requests and improving cache hit ratios.

Nguồn: Source: Content Delivery Network (CDN) Reference Architecture Content Delivery Network (CDN) Reference Architecture ↗

Ví dụ triển khai (Cloudflare Resources) Deployment examples (Cloudflare Resources)

Tutorial, solution guide và reference từ developers.cloudflare.com/resources ↗ — gợi ý theo chủ đề bài học. Tutorials, solution guides, and reference docs from developers.cloudflare.com/resources ↗ — matched to this lesson topic.