Cloud & Infrastructure

Cloud & Infrastructure

In-depth Big-Tech software architecture articles on Cloud & Infrastructure by Duong Phuc Khanh (khanhdp · Kido). (Total 1 in-depth engineering monographs & publication essays).

LRU-Tiered Object Storage with Zero-Byte Symlinks and Zipf-Distributed Cache FinOps
Cloud & Infrastructure
Nov 11, 2026•16 min read

LRU-Tiered Object Storage with Zero-Byte Symlinks and Zipf-Distributed Cache FinOps

An architectural deep-dive into 200TB storage FinOps: unraveling the $810/mo CDN egress trap, the Cloudflare R2 vs. Glacier Instant Retrieval cost paradox, self-hosting a 3-tier R2 -> NVMe SSD -> Cold HDD pipeline with zero-byte relative symlinks and imgproxy, POSIX relatime LRU eviction, and Zipf-distributed cache economics.