Real-time Stock & Crypto Discussion Community

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Turnkey

Real-time stock discussion and community platform for Korean, US, and cryptocurrency markets
Provides real-time chat, charts, and bulletin board features.

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Real-time Stock & Crypto Discussion Community - Media 1

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Roles

PlanningDesignFrontendBackend

Tech Stack

Next.js

React

NestJS

Fastify

Socket.io

Supabase

TypeScript

Tailwind CSS

TanStack Query

Turborepo

AWS EC2

Key Features

Dual Chat System: Main chat room + stock-specific chat rooms with real-time WebSocket communication, multi-tab user detection
Real-time Market Data: Yahoo Finance API integration, Korean/US/crypto market data, Recharts-based charts
Community Bulletin Board: Post/comment CRUD, nested replies, like/dislike, file attachments (images + PDF)
Admin Dashboard: Visitor analytics (GeoIP), user/content management, report handling, banner management
Social Features: Follow/unfollow, user blocking, follower leaderboard, profile pages

Key Achievements

Socket.io Multi-tab Recognition: Map data structure for per-socket metadata + per-room participant tracking, detecting last socket exit
4-Stage Content Moderation: Direct matching + pattern detection + morphological variants + romanized profanity detection (1000+ Korean banned words)
Request Deduplication Caching: Node-Cache + pending fetch tracking to prevent Thundering Herd, 300s TTL
File Upload System: Pre-upload ID generation, Sharp image optimization, hourly orphan file cleanup cron job
TanStack Query Hierarchical Query Keys: Nested key structure by feature for bulk related data invalidation
Turborepo Monorepo: 6 shared packages (types, constants, ui, utils, etc.) maximizing code reuse

#Stock Platform

#Real-time Chat

#Community

#WebSocket

#NestJS

#Supabase