AWS

How to manage Route53 hosted zones in a multi-account environment

AWS, Programming, Route53

An interesting question came up in a conversation today: “How should I manage the Route53 DNS records in a multi-account environment?” Suppose you have configured an AWS Organization with different accounts for dev, staging and production environments. And you have registered the root domain for your application in the master AWS account. When working with …

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Building a custom IAM system has made me appreciate AWS IAM even more

AppSync, AWS, Lambda, Programming, Serverless

In the last post I discussed my preferred approach for modelling multi-tenant applications with AppSync and Cognito. This approach supports the common requirements in these applications, where there are a number of distinct roles within each tenant. This approach (and others like it) works great when the tenants are isolated. But what if they are …

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How to model one-to-many relationships with AppSync and DynamoDB

AppSync, AWS, DynamoDB, Programming, Serverless

Thank you to Josh for asking this question on the AppSync Masterclass forum. His original question goes like this: Let’s say I want to add a one-to-many relationship from Profile to a new property called “Tag” (a complex object with “name” and “color” properties) so a user can define their own Tags. I would also like a …

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How to secure multi-tenant applications with AppSync and Cognito

AppSync, AWS, Cognito, Serverless

One of the most common questions I get is “How do I build a multi-tenant application with AppSync and Cognito?”. If you google this topic on the internet you will no doubt come across many different opinions. It’s a topic that we’ll soon explore in the AppSync Masterclass but I want to take this opportunity …

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How to configure environment specific parameters with Vue.js and Amplify

Amplify, AWS, Programming, Vue

When you start a new Vue.js project that needs to interface with APIs running in AWS, there’s a good chance you will have these lines of code: import Amplify from ‘aws-amplify’ Amplify.configure({ Auth: { region: ‘us-east-1’, userPoolId: ‘xxx’, userPoolWebClientId: ‘xxx’, mandatorySignIn: true } }) These few lines of code let you use the aws-amplify library …

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How I built a social network in 4 weeks with GraphQL and serverless

AppSync, AWS, GraphQL, Programming, Serverless

I have been involved with a client project to help the client launch a new social network for university students to engage with each other to do sports. Amongst other things, users can: Arrange activities and ask to join others’ activities (like a basketball match or to run in the park). There’s private messaging. Users …

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