Writing
Plugin ArchitectureHow rich text editors keep the core minimal and delegate every feature to independent plugins — commands, transforms, listeners, and node registration.
2026-08-09system-design
Real-Time & Collaborative EditingLive update mechanisms, operational transform, CRDTs, and presence — how documents, feeds, and chat stay in sync across users.
2026-08-09system-design
Undo/RedoStack-based history, granularity batching, structural sharing, and user-scoped undo in collaborative editors.
2026-08-09system-design
Accessibility (a11y)Semantic HTML, ARIA patterns, keyboard navigation, screen reader announcements, and motion — the full picture of building UIs that work for everyone.
2026-08-08system-design
Code Splitting & Lazy LoadingHow to ship only the JavaScript a user needs right now — route-level chunks, interaction-triggered loading, idle prefetch, and the LCP vs INP tradeoff.
2026-08-08system-design
Document Model & Tree StructuresHow rich text editors, collaborative documents, and drawing tools model content as an immutable tree — node types, editor state, selection, and the contentEditable trap.
2026-08-08system-design
Error States & Loading IndicatorsHow to design loading, error, and empty states that keep users informed and in control — not staring at a blank screen wondering what went wrong.
2026-08-08system-design
Image OptimizationHow to load images faster, prevent layout shift, serve the right format and size, and handle uploads correctly — from lazy loading to CDN delivery.
2026-08-08system-design
Internationalization (i18n)RTL layouts, bidirectional text, locale-aware formatting, IME composition events, and string externalization — building UIs that work across languages and regions.
2026-08-08system-design
Multi-Tab CoordinationBroadcastChannel, Web Locks, and SharedWorker — the three browser APIs for coordinating state, work, and communication across multiple open tabs.
2026-08-08system-design
Offline & Network ResilienceService Workers, IndexedDB, the outbox pattern, exponential backoff, and cross-tab coordination — building apps that work when the network doesn't.
2026-08-08system-design
Performance Metrics & MonitoringThe metrics that matter, what each one catches, how to measure them from real users, and the techniques that move the needle on interaction-heavy surfaces.
2026-08-08system-design
IdempotencyHow idempotency keys let clients safely retry failed requests without producing duplicate effects on the server.
2026-08-07system-design
Client-Side CachingIn-memory caches, HTTP caching headers, eviction strategies, and request deduplication — the full picture of how the frontend avoids redundant network work.
2026-08-06system-design
Debouncing & ThrottlingTwo techniques for controlling how often a function fires in response to high-frequency events — and how to choose between them.
2026-08-06system-design
Optimistic UpdatesHow optimistic updates make UIs feel instant by applying changes before the server responds — and how to roll back cleanly when the server disagrees.
2026-08-06system-design
Animation Performance & the CompositorHow the browser renders animations, why some CSS properties are cheap and others aren't, and techniques for smooth 60fps motion.
2026-08-05system-design
Browser Processes & ThreadsHow modern browsers use multiple processes and threads to keep tabs isolated, UIs responsive, and rendering smooth — with a focus on Chrome's architecture.
2026-08-05system-design
Browser Rendering PipelineA deep dive into everything that happens from typing a URL to pixels on screen — parsing, layout, paint, compositing, and how to optimize each step.
2026-08-05system-design
Infinite Scrolling & VirtualizationHow infinite scroll and virtualization work, when to use each, and how they combine to handle large lists without destroying performance.
2026-08-05system-design
Pagination: Offset vs CursorHow offset and cursor pagination work, when to use each, and why cursors win for feeds and infinite scroll.
2026-08-05system-design
Understanding the JavaScript Event LoopHow JavaScript handles async code through the call stack, Web APIs, task queue, and microtask queue.
2026-08-04javascript
Data Normalization in the FrontendWhat is normalization and why do we need it in the frontend?
2026-08-04system-design
Rendering StrategiesWhat are different rendering strategies and when should you use them?
2026-08-04system-design
System Design FrameworkA framework to tackle FE System Design in both interview and day-to-day settings.
2026-08-04system-design