#Performance — AJAY BLOGS

Abstract concentric squares evoking a CPU die

Inside Modern CPUs: A Programmer's Mental Model

Branch prediction, cache hierarchies, speculative execution and why your tidy code sometimes runs slower than the ugly version. A practical mental model of the machine underneath.

Ajay Pal Singh Jun 16, 2026 3 min read

Abstract flowing wave forms representing modern web architecture

Web

The New Web Stack: Islands, Edges and Less JavaScript

The web is quietly rediscovering the server. A tour of the architecture behind the current generation of fast sites: islands, streaming, the edge, and shipping dramatically less client-side JavaScript.

Ajay Pal Singh May 14, 2026 3 min read