Adrian Hall

Adrian Hall

Microsoft Program Manager by day; Mobile Developer by night

Recent posts

Backend GraphQL: How to trigger an AWS AppSync mutation from AWS Lambda

October 26, 2018  14 minute read  

This blog will explore a technique that opens up a whole new world of possibilities for notifying clients of results within a serverless application. Let’s say you have built a nice mobile and web versions of a chat application that uses a GraphQL API built on top of AWS AppSync. Users authenticate with Amazon Cognito user pools Users table is stored in DynamoDB Changes to the users table are communicated to the app via subscriptions How does the users table get updated? A naive a...

Authentication with AWS Amplify and Android: Integrating TOTP

October 22, 2018  9 minute read  

This will be an in-depth series on authentication with [AWS Amplify]. Here are the topics I am going to cover, and I will update each blog with the links as I complete the articles. The basics - a username/password system. Customizing the UI. Authenticating with Facebook. Authenticating with Google. Using third-party authentication providers. Using Time-based One-time passwords (TOTP). Using Biometric authentication. Doing fraud protection and analytics. Over the last five...

Authentication with AWS Amplify and Android: 3rd Party OIDC Providers

October 15, 2018  10 minute read  

This will be an in-depth series on authentication with [AWS Amplify]. Here are the topics I am going to cover, and I will update each blog with the links as I complete the articles. The basics - a username/password system. Customizing the UI. Authenticating with Facebook. Authenticating with Google. Using third-party authentication providers. Using Time-based One-time passwords (TOTP). Using Biometric authentication. Doing fraud protection and analytics. In the last two ar...

Authentication with AWS Amplify and Android: Google Login

October 08, 2018  8 minute read  

This will be an in-depth series on authentication with [AWS Amplify]. Here are the topics I am going to cover, and I will update each blog with the links as I complete the articles. The basics - a username/password system. Customizing the UI. Authenticating with Facebook. Authenticating with Google. Using third-party authentication providers. Using Time-based One-time passwords (TOTP). Using Biometric authentication. Doing fraud protection and analytics. This is part 4 — a...

Learn to build mobile and web apps with AWS Amplify and Serverless Framework

October 02, 2018  3 minute read  

There has always been a bit of a problem between deploying your backend and then integrating that same backend with your front end code. The front end needs to know where the back end is located. The traditional approach is to create a configuration file for the purpose. But how? The AWS Mobile team created the awsmobile CLI and followed that with the AWS Amplify CLI. These tools are great for new projects. They provide for best practices deployment capabilities on the backend — and automati...