Recent posts
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Activation Code Licensing System Design (Part 3): Activation Flow & Device Lifecycle
2025.09.03Learn how activation codes are securely consumed during device activation, how validation and revalidation work, and how to manage the full device lifecycle in a licensing system.
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Activation Code Licensing System Design (Part 2): Constraints & Code Generation
2025.09.01Learn how to design activation code constraints that define license plans, and how to generate, manage, and enforce codes in a backend and portal system.
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Activation Code Licensing System Design (Part 1): Foundations & Architecture
2025.08.30Learn the foundations of activation code licensing, how it compares to subscriptions, and see the core architecture of a flexible, cross-platform licensing system.
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How to Sync Website Theme with System Dark/Light Mode
2025.08.26Fix the common issue where “system” theme does not auto-update. Learn how to use matchMedia to sync your site with system dark/light changes in real time.
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How to Migrate from PayPal REST API Calls to the Official Server SDK in Next.js
2025.08.13Learn why and how I migrated from manual PayPal REST API calls to the official Server SDK in a Next.js + TypeScript project, gaining type safety and more stable payments.