Creating a WhatsApp Notification Service Using AWS Lambda and a Serverless Framework

Node.js, AWS Lambda functions, AWS SQS, DynamoDB, Twilio, serverless framework and event-driven architecture

Nishant Kumar

6 weeks · 6-8 hours per week

In this liveProject you’ll step into the shoes of a backend engineer working for a SaaS company that builds custom WhatsApp messaging tools. Your new client is a college professor who wants to be able to send group messages to her students. Your challenge is creating cloud-based software that lets your client write customizable messages, send messages to individuals or an uploaded group list, and view a message delivery status log. To do this, you’ll use Node.JS, a serverless framework, and AWS resources such as Lambda Function and DynamoDB.

project author

Nishant Kumar

Nishant Kumar is a software developer for a Fintech startup in Berlin, where he is responsible for building a cloud-agnostic scalable distributed system. He has spent nine years working in the software industry, including building SaaS, IoT, Fintech, retail, and enterprise-scale solutions.

Prerequisites

This liveProject is for JavaScript developers looking for hands-on experience writing production-grade services. To begin this liveProject, you will need to be familiar with:

TOOLS

Basics of JavaScript
Basics of Node.js
Basics of NoSQL database
Basics of DynamoDB CRUD operations
REST APIs
Basic knowledge of YML/YAML-based syntax
Command-line interfaces (CLIs)

TECHNIQUES

Serverless architecture
Basics of event-driven architecture
Basics understanding of Webhooks and idempotency concepts
Familiarity with Rest API client tools such as Postman or Insomnia REST

you will learn

In this liveProject, you’ll learn to design and develop a cloud-based Software-as-a-Service program using the latest serverless tools. The skills you’ll develop can be easily transferred to other messaging projects, such as order notifications, user verifications, and security protocols.

Node.JS libraries for parsing recipient list CSV files, accessing and managing AWS resources, and sending outbound messages
Building APIs with Amazon API gateway
Business logic with AWS Lambda
Storing message templates and message delivery logs with AWS DynamoDB
Processing messages with Amazon SQS

features

Self-paced: You choose the schedule and decide how much time to invest as you build your project.
Project roadmap: Each project is divided into several achievable steps.
Peer support: Chat with other participants within the liveProject platform.
Compare with others: For each step, compare your deliverable to the solutions by the author and other participants.
Book and video resources: Excerpts from Manning books and videos are included, as well as references to other resources.

project outline

Introduction

Prerequisites Test

New module

Get Started

1. Setting up the Project and the Development Environment

1.1 Setting up the Project and the Development Environment

Preparing Your System for Serverless

1.2 Submit Your Work

2. Managing Message Template: Building the REST API

2.1 Managing Message Template: Building the REST API

Lambda Function as a web API

DynamoDB with Serverless Framework

2.2 Submit Your Work

3. Setup a Recipient List Upload Feature in CSV or XLSX Format

3.1 Setup a Recipient List Upload Feature in CSV or XLSX Format

3.2 Submit Your Work

4. Setup Underlying Services and Endpoints to Process Messages

4.1 Setup Underlying Services and Endpoints to Process Messages

4.2 Submit Your Work

5. Use Asynchronous Message Processing to Send WhatsApp Notifications

5.1 Use Asynchronous Message Processing to Send WhatsApp Notifications

5.2 Submit Your Work

6. Provide a Summary and Message Delivery Status Logs

6.1 Provide a Summary and Message Delivery Status Logs

6.2 Submit Your Work

Summary

Project Conclusions

FAQs

Look inside

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