: An asynchronous, transactional object-store database suited for caching large amounts of structured data directly in the browser.
Traditionally, system design was viewed purely as a backend engineering domain. However, modern user expectations have shifted significant computing responsibilities straight into the user's browser. Today's client-side apps manage heavy state, real-time sync, localized databases, complex caching, and micro-frontend orchestration.
On Monday morning, Arjun sat with his whiteboard and began his system design.
async function patchModule(name, newVersionUrl) const old = registry.get(name); const newModule = await import(newVersionUrl); registry.set(name, newModule); namaste frontend system design patched
Before building the app, understand how it runs.
You might wonder what "patched" means in this context. It refers to a deliberate, systematic approach to frontend architecture—replacing scattered, reactive fixes (patches) with a cohesive, proactive design strategy.
Rendering tens of thousands of complex elements simultaneously will crash browser processes. Dom virtualization keeps the interface performing fast by rendering only the visible items inside the viewport, dynamically swapping elements out as the user scrolls. Today's client-side apps manage heavy state, real-time sync,
✅ – No full redeploy. ✅ Granular rollbacks – Per module, not entire app. ✅ Team autonomy – Each team patches their own MFEs.
Use this audit checklist to verify if you’ve applied all critical patches.
A common question: Is the course worthless now? Should I wait for a "Namaste Frontend System Design v2"? You might wonder what "patched" means in this context
Loading components only when they enter the viewport.
Use refs to track mount status or use dedicated cleanup functions. The course repo now includes a useStableEffect pattern.
Infinite scroll implementations lose scroll position when data prepends (e.g., chat apps).