--- title: "Anshul (@geekyyanshul) | Hashnode" description: "Learner. Read the latest articles by Anshul on Hashnode." url: "https://hashnode.com/@geekyyanshul" --- @geekyyanshul # Anshul @geekyyanshul · Joined March 2025 Learner ### [III.Cloudflare Caching Deep Dive: Cache Keys, TTLs, and cf-cache-status Explained](https://geekyyanshul.hashnode.dev/iii-cloudflare-caching-deep-dive-cache-keys-ttls-and-cf-cache-status-explained?utm_source=hashnode&utm_medium=feed) The $scheme trap, Tiered Cache, Cache Reserve, and curl commands to inspect it all The cache key: more than just a URL When Cloudflare decides "have I seen this before?", it builds a cache key — the s 17 min read · [geekyyanshul.hashnode.dev](https://geekyyanshul.hashnode.dev/iii-cloudflare-caching-deep-dive-cache-keys-ttls-and-cf-cache-status-explained?utm_source=hashnode&utm_medium=feed) [2](https://hashnode.com/posts/iii-cloudflare-caching-deep-dive-cache-keys-ttls-and-cf-cache-status-explained/6ac96f4a4a2c0a7ec042511f) [Oct 9](https://hashnode.com/posts/iii-cloudflare-caching-deep-dive-cache-keys-ttls-and-cf-cache-status-explained/6ac96f4a4a2c0a7ec042511f) ### [II.DNS, Anycast & BGP: How Your Request Finds the Nearest Data Center](https://geekyyanshul.hashnode.dev/ii-dns-anycast-bgp-how-your-request-finds-the-nearest-data-center?utm_source=hashnode&utm_medium=feed) From CNAME flattening to BGP path selection — with a \`dig\` command you can run today 11 min read · [geekyyanshul.hashnode.dev](https://geekyyanshul.hashnode.dev/ii-dns-anycast-bgp-how-your-request-finds-the-nearest-data-center?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/ii-dns-anycast-bgp-how-your-request-finds-the-nearest-data-center/6ac6cc9fb99b32acf1087f84) [Oct 7](https://hashnode.com/posts/ii-dns-anycast-bgp-how-your-request-finds-the-nearest-data-center/6ac6cc9fb99b32acf1087f84) ### [I.How Cloudflare CDN Serves Requests: The Full Request Lifecycle](https://geekyyanshul.hashnode.dev/how-cloudflare-cdn-serves-requests-the-full-request-lifecycle?utm_source=hashnode&utm_medium=feed) 13 steps from DNS to origin and back - every claim sourced from Cloudflare's docs 20 min read · [geekyyanshul.hashnode.dev](https://geekyyanshul.hashnode.dev/how-cloudflare-cdn-serves-requests-the-full-request-lifecycle?utm_source=hashnode&utm_medium=feed) [2](https://hashnode.com/posts/how-cloudflare-cdn-serves-requests-the-full-request-lifecycle/6ac58494afe75aef018822b6) [Oct 6](https://hashnode.com/posts/how-cloudflare-cdn-serves-requests-the-full-request-lifecycle/6ac58494afe75aef018822b6) ### [I Thought Cloudflare Was Just a CDN. Then I Discovered This.](https://geekyyanshul.hashnode.dev/i-thought-cloudflare-was-just-a-cdn-then-i-discovered-this?utm_source=hashnode&utm_medium=feed) Three pillars, one network, and the fork in the road (🟠 vs ⚪) 8 min read · [geekyyanshul.hashnode.dev](https://geekyyanshul.hashnode.dev/i-thought-cloudflare-was-just-a-cdn-then-i-discovered-this?utm_source=hashnode&utm_medium=feed) [Oct 6](https://hashnode.com/posts/i-thought-cloudflare-was-just-a-cdn-then-i-discovered-this/6ac50c4240ec6c6b3281b9be) ### [CodeChef Premium Review: Is It Worth It and How to Get It Cheaper](https://geekyyanshul.hashnode.dev/codechef-premium-review-is-it-worth-it-and-how-to-get-it-cheaper?utm_source=hashnode&utm_medium=feed) This article is a personal CodeChef Premium review where I share whether CodeChef Premium is worth it and how you can use a CodeChef Premium coupon code to 3 min read · [geekyyanshul.hashnode.dev](https://geekyyanshul.hashnode.dev/codechef-premium-review-is-it-worth-it-and-how-to-get-it-cheaper?utm_source=hashnode&utm_medium=feed) [Jan 27](https://hashnode.com/posts/codechef-premium-review-is-it-worth-it-and-how-to-get-it-cheaper/69791eecdc5c331136d8f4c3)