OCaml CRUD Todo App

A full-stack todo application built with OCaml (Dream) backend and ReasonReact frontend, featuring JWT authentication and PostgreSQL database.

crud.mp4

Features

• JWT Authentication
• Tasks CRUD operations
• RESTful API
• Protected routes
• Type-safe database queries with Rapper

Tech Stack

Backend

• OCaml
• Dream (Web framework)
• Caqti (Database interface)
• PostgreSQL
• JWT (JSON Web Tokens)
• Bcrypt (Password hashing)

Frontend

• Melange (ReasonML)
• TailwindCSS

API Routes

Method	Path	Description	Auth Required
POST	/users	Create a new user	No
POST	/login	Login a user	No
GET	/verify-token	Verify JWT token	Yes
POST	/tasks	Create a new task	Yes
GET	/tasks	Get all tasks for user	Yes
DELETE	/tasks/:id	Delete a task	Yes
PUT	/tasks/:id	Update a task	Yes

Getting Started

Prerequisites

• OCaml
• Node.js
• PostgreSQL
• OPAM

Environment Variables

Create a .env file in the root directory:

POSTGRES_URL=postgresql://admin:password@localhost:5432/ocaml_crud
JWT_SECRET=your_key