Uploaded April 2021 | Updated September 2026, 3 hours ago
In this video, I'll walk through how to build a Neptune-backed AppSync GraphQL API with TypeScript, AWS CDK, AWS AppSync, and AWS Lambda.
We'll start from scratch, creating a new CDK project, installing the dependencies, and writing the stack step by step. We'll also create and walk through the GraphQL schema as well as the business logic that will run in Lambda.
Code: github.com/dabit3/cdk-appsync-neptune
Blog post: dev.to/dabit3/building-a-graphql-api-on-aws-with-amazon-neptune-graph-database-and-cdk-428a
0:00 - Introduction
1:28 - Creating the project
3:27 - Creating the GraphQL API
5:07 - Creating the Lambda function
7:25 - Create the Neptune cluster
10:18 - Writing the function code
18:31 - Deploying and testing the API
21:42 - Conclusion
In this video, I'll walk through how to build a Neptune-backed AppSync GraphQL API with TypeScript, AWS CDK, AWS AppSync, and AWS Lambda.
We'll start from scratch, creating a new CDK project, installing the dependencies, and writing the stack step by step. We'll also create and walk through the GraphQL schema as well as the business logic that will run in Lambda.
Code: github.com/dabit3/cdk-appsync-neptune
Blog post: dev.to/dabit3/building-a-graphql-api-on-aws-with-amazon-neptune-graph-database-and-cdk-428a
0:00 - Introduction
1:28 - Creating the project
3:27 - Creating the GraphQL API
5:07 - Creating the Lambda function
7:25 - Create the Neptune cluster
10:18 - Writing the function code
18:31 - Deploying and testing the API
21:42 - Conclusion
![How to Build a Full Stack NFT Marketplace on Ethereum with Polygon and Next.js - [2021 Tutorial]](https://i.ytimg.com/vi/GKJBEEXUha0/mqdefault.jpg "How to Build a Full Stack NFT Marketplace on Ethereum with Polygon and Next.js - [2021 Tutorial]
🚨 Update - Be sure to install ipfs-http-client@50.1.2 instead of ipfs-http-client for this to work properly
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🔗 Step by step article:
https://dev.to/dabit3/building-scalable-full-stack-apps-on-ethereum-with-polygon-2cfb
🔗 Source code
https://github.com/dabit3/polygon-ethereum-nextjs-marketplace/
In this video, youll learn how to build a full stack NFT marketplace on Ethereum with Solidity, Polygon, IPFS, Next.js, Ethers.js, and Hardhat.
Well start from scratch, creating a new project and installing the dependencies. Well then write and test out the smart contracts. Once the tests have passed, well write the front end code to connect the smart contracts.
After testing on a local network, well deploy to the Matic / Polygon network using a custom RPC provider (Infura).
0:00 - Introduction
3:00 - Project initialization and configuration
17:40 - Creating an Ethereum wallet
21:20 - Coding the NFT smart contract
28:19 - Coding the Market smart contract
58:50 - Testing the contracts
1:10:57 - Updating _app.js
1:14:35 - Updating the home page
1:35:24 - Deploying to a local node
1:39:47 - Coding the create-item page
1:58:00 - Coding the my-assets page
2:03:10 - Coding the creator-dashboard page
2:09:25 - Deploying to Matic Mumbai Testnet
2:20:40 - Conclusion")
