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Ecosystem Overview

How Rahat Works​

Rahat simplifies digital relief distribution through:

  • Digital Wallets: Beneficiaries receive digital wallets for secure transactions.
  • Transparent Distribution: Donors and humanitarian agencies can track fund utilization in real time.
  • Decentralized Ledger: Ensures that all transactions are tamper-proof and publicly verifiable.
  • Agent-based System: Local agents assist in cash-out and onboarding processes, ensuring last-mile connectivity.

Rahat Techstack

This a list of all the technology services used to build and run Rahat projects.

Rahat Technology Stack

Here's a more detailed breakdown of the Rahat Technology Stack, based on your diagram:

1. Database & Caching​

Efficient data storage and retrieval are crucial for Rahat’s performance and scalability.

  • PostgreSQL – A relational database used for storing core application data, including user information, transaction records, and project details.
  • Redis – A high-performance, in-memory caching system used to improve query response times and reduce database load.
  • Prisma – An ORM (Object-Relational Mapper) that simplifies database interactions, ensuring type-safe queries and improved developer productivity.

2. Backend - Server​

The backend is structured using a microservices architecture, allowing different components to function independently for better scalability and maintainability.

  • Node.js & Nest.js

    • Node.js serves as the backend runtime, ensuring high concurrency and efficient handling of requests.
    • Nest.js (a progressive Node.js framework) provides a modular architecture with built-in dependency injection, making it ideal for scalable applications.

  • Hardhat & Viem

    • Hardhat is used for blockchain smart contract development, testing, and deployment, particularly for Ethereum-based environments.
    • Viem is a modern Ethereum library that replaces Ethers.js for interacting with the blockchain.

  • Bull / RabbitMQ

    • These message queues help in handling asynchronous tasks, such as transaction processing, notifications, and background jobs, preventing system overload.

  • Microservices

    • The backend follows a microservices architecture, where different projects work as microservices.

3. Frontend​

The frontend consists of both a web-based interface and a mobile application to provide a seamless user experience.

  • Next.js – A React-based framework used to build the web interface.
  • ShadCN – A modern UI component library built on top of Tailwind CSS, used for building clean, reusable, and accessible UI elements.
  • Viem – Used on the frontend to interact with blockchain networks securely and efficiently.
  • Zustand – A fast and scalable state management library for React, used to manage global state in Rahat's frontend with a minimal and efficient API.
  • Wallets – Integrated support for different wallets like MetaMask and Coinbase to enable blockchain interactions.

4. Vendor - Mobile App​

Vendors play a critical role in Rahat's ecosystem, accepting digital payments from beneficiaries.

  • Ionic – A cross-platform mobile development framework allowing vendors to access Rahat’s services via mobile devices.
  • Backup Services – Services to back up the vendor's wallet; currently uses Google Drive for wallet backup.

5. Blockchain Integration​

Rahat integrates multiple blockchain networks to facilitate financial access and transparency.

  • EVM (Ethereum Virtual Machine) – Supports Ethereum-based smart contracts for fund distribution and transaction tracking.
  • Stellar – A blockchain network optimized for fast, low-cost transactions, particularly useful for humanitarian aid and financial inclusion.

6. External Services​

Rahat leverages external services to extend its capabilities.

  • SMS/IVR

    • Uses voice-based and SMS-based interactions, enabling communication with beneficiaries who may not have smartphones.

  • Subgraph

    • Uses TheGraph to index blockchain data, making it easier to query and retrieve transaction details efficiently.

  • FSP (Financial Service Providers)

    • Integrates with payment processors and banking services to facilitate off-chain transactions and cash-out options for users.

  • Offramps

    • Allows users to convert blockchain tokens into fiat currency, making the system usable in real-world financial scenarios.