https://blog.davman.dev/blog Human Readable is where I try to make sense of code, systems, and the occasional existential bug. It’s a calm corner for developers who love clean architecture, coffee, and the art of not overengineering life. en-us davemanufor@gmail.com (David Manufor) davemanufor@gmail.com (David Manufor) Fri, 22 May 2026 00:00:00 GMT https://blog.davman.dev/blog/mastering-prefix-and-suffix-arrays https://blog.davman.dev/blog/mastering-prefix-and-suffix-arrays A practical guide to optimizing continuous range queries and evaluating two-way array dependencies using prefix and suffix sum arrays in constant time. Fri, 22 May 2026 00:00:00 GMT davemanufor@gmail.com (David Manufor) algorithmsdata structuressoftware developmentsystem design https://blog.davman.dev/blog/the-n-plus-one-query-problem https://blog.davman.dev/blog/the-n-plus-one-query-problem Your app is slow, and you're convinced it's a frontend problem. But what if the real culprit is hiding in your database layer — whispering hundreds of queries when one would do? Here's how the N+1 query problem silently kills performance, and how to fix it before your users notice. Thu, 21 May 2026 00:00:00 GMT davemanufor@gmail.com (David Manufor) software developmentdatabasesperformancesystem design https://blog.davman.dev/blog/when-the-internet-catches-a-cold https://blog.davman.dev/blog/when-the-internet-catches-a-cold Yesterday’s AWS outage reminded everyone that even the cloud has bad days. This post looks at what went wrong, why it matters, and what developers can learn about resilience, dependency, and building systems that stay human — even when they fail. Tue, 21 Oct 2025 00:00:00 GMT davemanufor@gmail.com (David Manufor) awsresiliencesystem designcloud architecture