Best Practices Guides
Actionable, no-fluff guides — what to do, what to avoid, and the mistakes that actually cause problems in production.
Password & Authentication Best Practices
Authentication is one of the most attacked parts of any application, and small implementation choices — how passwords are stored, how login attempts are rate-limited, what happens on a failed login — have an outsized effect on how resistant a system actually is to real attacks.
React Best Practices
React is forgiving enough to let genuinely problematic patterns work without any obvious error — components that re-render far more than necessary, state that's structured in a way that causes bugs down the line. These practices are the ones that consistently separate maintainable React codebases from ones that get harder to work in as they grow.
JavaScript Best Practices
JavaScript's flexibility is both its strength and the source of most of its footguns — the language rarely stops you from writing something that technically runs but behaves unpredictably. These practices catch the mistakes that most reliably cause real bugs.
Git Best Practices
Git is forgiving about how you use it day-to-day, but a handful of habits make the difference between a repository history that's actually useful for debugging and one that's just noise. These practices matter most on any project with more than one contributor.
REST API Design Best Practices
A REST API that technically works but doesn't follow established conventions is harder for every consumer of it to use correctly — including your own future self. These practices are what separate an API that feels predictable and easy to integrate against from one that requires constantly checking the docs for surprises.
CORS Best Practices
CORS errors are one of the most common sources of confused debugging, largely because the fix people reach for first — disabling CORS entirely, or setting Access-Control-Allow-Origin to '*' everywhere — trades a confusing error for a real security gap.
Session & Cookie Best Practices
Cookies carrying session data are a frequent target, and several flags exist specifically to reduce that risk — flags that are trivial to set but frequently left at their permissive defaults.
API Security Best Practices
An API is a direct, programmatic door into your backend, and it's judged by attackers on exactly the same criteria as any other entry point — sometimes more, since APIs are often less scrutinized than user-facing pages.
HTML Best Practices
HTML is forgiving — browsers render badly-structured markup without complaint — which means poor practices rarely show up as visible bugs, only as accessibility gaps, SEO weaknesses, and harder-to-maintain code.
CSS Best Practices
CSS at small scale is forgiving; at the scale of a real, growing application, sloppy conventions compound into specificity wars and styles nobody's confident is safe to remove.
Angular Best Practices
Angular's structure and conventions are more opinionated than some frameworks, and working with that structure — rather than around it — is what keeps a growing Angular application maintainable.
Accessibility (a11y) Best Practices
Accessibility issues rarely show up as bugs in typical manual testing, since most testing is done by sighted users navigating with a mouse — which is exactly the group least likely to notice a keyboard trap or a missing screen-reader label.
Tailwind CSS Best Practices
Tailwind's utility-first approach solves real problems (no more hunting for unused CSS, no specificity wars) but introduces its own set of habits worth getting right, especially around dynamic class names and consistency.
TypeScript Best Practices
TypeScript's value comes almost entirely from how precisely and honestly your types describe your actual data — a codebase full of any and loose type assertions gets very little of TypeScript's real benefit while paying its full complexity cost.
Async/Await & Promises Best Practices
async/await makes asynchronous code read like synchronous code, which is exactly what makes it easy to forget it's still asynchronous underneath — leading to specific, recurring mistakes around error handling and concurrency.
Error Handling Best Practices
How an application handles the unexpected says more about its reliability than how it handles the expected — good error handling is what separates a graceful failure from a confusing crash or, worse, silent incorrect behavior.
RxJS Best Practices
RxJS is powerful specifically because it composes complex async event handling declaratively — and that same power makes subscription management and operator misuse the most common source of real RxJS bugs.
GraphQL Best Practices
GraphQL's flexibility shifts some design responsibility from the API author to the schema itself — a well-designed schema makes correct usage easy and inefficient usage hard; a poorly-designed one does the opposite.
Node.js Best Practices
Node's single-threaded, event-loop model rewards certain patterns and punishes others in ways that aren't always obvious until an application is under real load.
SQL & Database Best Practices
Database mistakes are often invisible at small scale — a missing index, an N+1 query pattern — and become serious performance or correctness problems only once real data volume arrives, by which point they're harder to fix.
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