Blog articles tagged 'programming'

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on 9/18/2021 3:58 PM
AWS AppSync added support for Lambda authorizers on 30th July 2021 and it made it much easier to implement group-based authorization with 3rd party identity services. Group-based auth with AppSync and Cognito I previously wrote about how you can secure mu[...]
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on 6/6/2021 6:29 PM
With API Gateway and Lambda, you can handle client errors gracefully by returning a 4xx response. module.exports.handler = async (event) => { // run validation logic return { statusCode: 400 } } This way, we can communicate clearly to the client that ther[...]
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on 5/8/2021 10:27 AM
It’s been two years since I last wrote about Lambda layer and when you should use it. Most of the problem I discussed in that original post still stands: It makes it harder to test your functions locally. You will still need those dependencies to execute [...]
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on 5/5/2021 6:27 AM
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. An[...]
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on 4/2/2021 6:09 PM
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 [...]
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on 3/27/2021 1:30 PM
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” pro[...]
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on 11/17/2020 10:49 AM
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 basket[...]
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on 9/8/2020 3:50 PM
I previously wrote about five reasons you should consider AppSync over API Gateway. One thing that API Gateway supports but you can’t do with AppSync out-of-the-box yet is custom domain names. Your shiny new AppSync API is available at XYZ.appsync-api.us-[...]
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on 8/26/2020 3:54 AM
I have been working with a US client to build a first-of-its-kind app for managing medical consents. It falls under HIPAA compliance and it’s paramount that we do not allow unauthorized access to user data. As part of the app, we have built an admin tool [...]
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on 7/29/2020 7:02 PM
I have been working on a large AppSync project for a client these past few months. The initial version of the app was built in just a few weeks, but the client has commissioned additional features and the project has kept growing. At the time of writing, [...]
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