Reading up on jemalloc

The post details how to build three heap allocators in Rust—bump, linked-list, and fixed-size block—showing code, alignment handling, and trade‑offs for kernel memory management.

Cloudflare reduced its Big Pineapple DNS cache entry size by 56% through five Rust optimizations, freeing ~100 TB of memory while boosting insert throughput 43% and cutting lookup latency 19%.