Build a Realtime Chat App with Notifications | Next.js, Clerk, Socket.io, Docker, Postgres
Build a Realtime Chat App with Notifications | Next.js, Clerk, Socket.io, Docker, Postgres focuses on production auth and hardening for Next.js, React, TypeScript, Node.js. The AceDevHub archive pairs runnable code with the security patterns teams actually review in interviews — cookies, JWT rotation, CSRF, rate limits, and env-safe configuration. In this full–stack project, we’ll build a production-style realtime chat app with notifications from scratch using Next.js, Clerk, Socket.io, Docker and Postgres.
- Clerk Authentication
- Threads
- Direct Messages
- Full Stack Next.js Project
- Auth Patterns
Tech stack
Tools we use
- Nx
Next.js
App framework
- Re
React
UI composition
- TS
TypeScript
Typed contracts
- No
Node.js
Runtime
- EX
Express.js
Core tool
- CL
Clerk
Core tool
- SO
Socket.io
Core tool
- Pg
PostgreSQL
Data layer
- DO
Docker
Core tool
- DO
Docker Compose
Core tool
- CL
Cloudinary
Core tool
- Tw
Tailwind CSS
Utility styling
Build guide
How to build this project
How to build Build a Realtime Chat App with Notifications | Next.js, Clerk, Socket.io, Docker, Postgres
This guide is written for AceDevHub visitors — you do not need a YouTube description to get started. Difficulty: Intermediate.
What this project is
Build a Realtime Chat App with Notifications | Next.js, Clerk, Socket.io, Docker, Postgres focuses on production auth and hardening for Next.js, React, TypeScript, Node.js. The AceDevHub archive pairs runnable code with the security patterns teams actually review in interviews — cookies, JWT rotation, CSRF, rate limits, and env-safe configuration.
What you get
- Full project source code archive (ZIP)
- Environment and run instructions in the repo README
- Module-oriented folders matching the original curriculum
Skills you will practice
- Apply Next.js in a realistic intermediate codebase
- Apply React in a realistic intermediate codebase
- Apply TypeScript in a realistic intermediate codebase
- Apply Node.js in a realistic intermediate codebase
- Apply Express.js in a realistic intermediate codebase
- Apply Clerk in a realistic intermediate codebase
- Apply Socket.io in a realistic intermediate codebase
- Apply PostgreSQL in a realistic intermediate codebase
- Apply Docker in a realistic intermediate codebase
- Apply Docker Compose in a realistic intermediate codebase
- Apply Cloudinary in a realistic intermediate codebase
- Apply Tailwind CSS in a realistic intermediate codebase
Implementation approach
Work through the repository in this order:
- Baseline server — Configure Helmet, CORS, cookies, and structured logging.
- Auth flows — Implement login, refresh rotation, and protected routes.
- Threat modeling — Add CSRF, rate limits, and input validation at boundaries.
- Audit checklist — Verify secrets, HTTPS-only cookies, and production env separation.
Tech stack
- Next.js
- React
- TypeScript
- Node.js
- Express.js
- Clerk
- Socket.io
- PostgreSQL
- Docker
- Docker Compose
- Cloudinary
- Tailwind CSS
Architecture patterns
- WebSockets
- Realtime Chat
- Realtime Notifications
- Image Uploads
- Authentication
- Authorization
Getting started
- Sign in to AceDevHub and download the source archive from this page.
- Extract the ZIP and open the README for environment variables and prerequisites.
- Install Node.js LTS, run
npm install(orpnpm install) in the project root. - Copy
.env.exampleto.env, then start services with Docker Compose where provided. - Create a local PostgreSQL database and apply migrations or seed scripts from the repo.
- Run the dev script, verify the app boots, then follow the implementation sections below.
Stretch ideas
- Add automated tests for critical paths
- Instrument logging and health checks for production
- Publish a trimmed portfolio variant with seed data
Sign in on AceDevHub to download the archive, then treat this page as your permanent project reference.