Frontend System Design Questions ( Nested Comments ) - HLD, LLD, Interview Experience 🔥🔥

Опубликовано: 20 Февраль 2026
на канале: RoadsideCoder
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Frontend System Design Question on building a Scalable Nested Comments Component like reddit will be discussed in this video along with Requirement gathering, HLD, LLD and Optimisations on this. We will also discuss tips and tricks to tackle your React JS and JavaScript Questions in Frontend System Design Interviews.

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00:00 Intro
02:00 Functional Requirements
02:41 Non Functional Requirements
03:27 High Level Design (HLD)
04:19 Low Level Design (LLD)
05:09 Setup a New React App
07:49 Comment Data Structure
08:39 Nested Comments Component
09:33 Rendering Comments
19:18 Recrursive Reply Rendering
22:03 DFS to insert a comment / reply
28:57 Edit Comments
35:40 Delete Comments
39:08 Typescript, sorting, accessibility, up/down vote, etc

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