Tutorials covering programming languages, type systems, architecture, tooling, and the patterns used to build software that lasts. Each chapter is standalone, built around real examples and verified facts.
Angular releases a new major version every six months, and each major version carries breaking changes, deprecations, and new APIs. Migrating between versions is not a single event but a recurring discipline. The framework provides ng update to automate most of the mechanical work, and the Angular Update Guide provides a checklist of breaking changes…
The Web Audio API is a graph-based audio processing system built into the browser. It is not a replacement for the <audio> element; it is a complement to it, the way <canvas> complements <img>. When the requirement is playing a track, the media element is simpler. When the requirement is processing, synthesizing, analyzing, or routing…
Cross-database migration and schema evolution are two different problems that are often confused because both involve moving data and changing structure. A cross-database migration moves data from one database engine to another—PostgreSQL to SQL Server, MySQL to PostgreSQL, on-premises to cloud. Schema evolution changes the structure of a database while it is running, with the…
Angular 17 introduced a new built-in control flow syntax that replaces the structural directives *ngIf, *ngFor, and *ngSwitch with blocks prefixed by @. The new syntax is baked into the template, which means CommonModule is no longer required for these directives, and the compiler can pre-compile the blocks for better performance and type checking. This…
A micro-frontend is an architectural pattern where a large application is composed from independently developed, independently deployed frontend fragments. Web Components are a browser-native mechanism for encapsulating markup, styles, and behavior into a custom element. The combination is appealing because it promises framework-agnostic composition: a React shell can host a Vue micro-frontend, or a legacy…
Database unit testing frameworks exist because the logic inside stored procedures, functions, and triggers is code, and code that is not tested accumulates defects silently. The challenge is that database code does not return values or throw exceptions in the way that application code does. A stored procedure communicates through result sets and output parameters….
Upgrading a legacy Angular application is rarely a single task. It is a sequence of decisions: which Angular version the application is on, whether the codebase still uses NgModules or standalone components, whether the build system is the old webpack-based one or the new esbuild-based one, and whether the application was originally written in AngularJS…
Every React build is a sequence of AST transformations. JSX becomes React.createElement or jsx() calls, TypeScript types are stripped, and the React Compiler inserts memoization. The tools that perform these transformations—Babel and SWC—expose plugin APIs that let developers add their own passes to the pipeline. A custom plugin can inject instrumentation, rewrite imports, enforce architectural…
Database benchmarking is the discipline of measuring a system’s performance under a workload that is defined, repeatable, and representative of the use case. The three tools that dominate the conversation serve different purposes. sysbench is a lightweight, multi-threaded benchmark tool for quick impressions of system performance, with built-in tests for CPU, memory, file I/O, and…
Architecture is the set of decisions that determine how an application is organized, how its parts communicate, and how it changes over time. Angular provides the primitives — components, services, dependency injection, routing, signals — but it does not prescribe how to combine them. That prescription is the architect’s job, and it is where most…