Build scalable & performant full-stack serverless applications (Appsync Masterclass)
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Harry Potter

Harry Potter

Sep 16, 2023

Build scalable & performant full-stack serverless applications (Appsync Masterclass)

Master the art of building scalable and performant full-stack serverless applications using AppSync, Lambda, DynamoDB, and Vue.js. Learn from real-world experience, gain hands-on expertise in AWS, and create a Twitter clone from scratch. Get production-ready with observability, security, and performance optimization

Doing the AppSync Masterclass course has given me the confidence and skills to start a project I've been wanting to do for 5 years.

Geoff Baskwill

Trend Micro

It's a very unique course. Yan uses best practices (such as testing) to really prepare you to create safe, production-ready applications in AppSync.

Djordje Nikolic

Full Stack Developer

This is by far the most robust and detailed course on AWS AppSync. Love the step by step examples and walkthrough. Best AppSync serverless course out there!

Orr Levinger

Senior Software Engineer

You can tell it's based on real-world experience and not from textbook examples. Very insightful and stuffed with insights needed to be successful in any larger AppSync project.

Anders Quist


This course is great for learning AppSync in a very practical way - by building out a Twitter clone step-by-step. If you are thinking about starting a new side project, take this course first!

David Kerr

Site Reliability Engineer

If you can only afford 1 course, I would suggest you go for this one. I have been watching online tutorials for many years but never seen anything like it!

Sarvesh Kesharwani




Serverless technologies let you build scalable and performant applications without managing any infrastructure. GraphQL lets you build powerful APIs that are easy to use and extend. Together, they're the perfect tool for building modern applications.


Learn practical skills valued by employers

Don't waste your time on yet another hello-world tutorial. Go deep and learn practical, hands-on skills that can actually make you a better developer and help you stand out from the crowd.


Testing & Debugging

How to test Lambda functions and AppSync APIs both locally (unit & integration tests) and remotely (end-to-end tests).



Learn best practices for logging, monitoring and tracing so you can spot and fix issues in production quickly.


Design Patterns

Learn architectural design patterns for serverless applications and modelling techniques for DynamoDB.



How to secure your application and prevent unauthorized access.


Experience modern full-stack development

Build a non-trivial, full-stack application using modern technologies (GraphQL, AWS, serverless, Vue.js) and development practices (infra-as-code, CI/CD, load-testing, progressive web apps).



Gain hands-on experience with popular AWS services such as AppSync, Lambda, DynamoDB and Cognito.


Vue.js and Tailwind CSS

Learn by building a non-trivial progressive web application with the popular Vue.js framework and Tailwind CSS.



Learn how GraphQL works, how it compares with REST APIs and best practices for modelling GraphQL schemas.


CI/CD with GitHub Actions

Continuously test and deploy your API using GitHub Actions.



Build a full-stack Twitter clone

Implement features such as user registration, managing user profile, post tweets, reply/retweet/like tweets, follow/unfollow users, hashtags, search, direct messages and notifications.


User authentication

Implement user registration, sign-in, sign-out flows using Cognito and Amplify. Including the 3-step UI flow for signing up to Twitter.


Manage user profile

Load user profile with tweets; allow users to edit their profile details and upload profile images to S3.



Users can send tweets, reply to tweets or like a tweet. Tweets would be distributed to followers' timelines.


Social features - follow, DMs

Users can follow each other and receive tweets into their timeline, and they can private message each other with direct messages.


Real-time notifications

Implement real-time notifications using websockets.

Get production-ready!

Getting an app to work is the easy part. The hard part is in getting it production-ready. Can it scale with more users? Can you troubleshoot issues quickly? Does it work well on both desktop and mobile?


Progressive Web Application (PWA)

Make the UI work well on desktop, tablets and mobile devices so the user always get a good experience no matter the form factor.


Analytics tracking

Gain insights into how users are using your application. Use Kinesis Firehose to ingest click-stream events and analyze them using Athena.



Set up CloudWatch alerts and dashboards; investigate performance issues with X-Ray; get detailed resolver metrics with CloudWatch Insights.


Performance optimization

Optimize Lambda cold start time and use AppSync's per-resolver caching to improve scalability and performance.


Hey, I'm Yan.

I'm an AWS Serverless Hero. I have run production workloads on AWS since 2010 and have helped thousands of developers get up to speed with AWS and serverless.

I have been an architect and principal engineer with a variety of industries including banking, e-commerce, sports streaming and mobile gaming. Nowadays, I help clients adopt AWS and serverless as an independent consultant. I have implemented several complex GraphQL APIs with AppSync, including a new social network. I have designed this course so you too can 



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Harry Potter

Harry Potter

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