AppSync Archives - Sandny Blog

Query definition in GraphQL and frequent errors with Apollo…

February 18, 2019March 11, 2019
by Coder Kai

Query definition in GraphQL is will be something you know now but not mastered. If you were going through the pages to troubleshoot frequent errors with Apollo Client which makes no sense, this post might help. First, the reason to create this post is,

Most of the error logs are not descriptive and makes no clue on where the real error is.
There can be so many different mistakes in coding the queries and difficulty in keeping on track of it.

And most importantly if I get into a trouble again, I can refer this 😉 Read more “Query definition in GraphQL and frequent errors with Apollo Client” →

AppSync

AppSync GraphQL Web App with AWS Amplify and IAM…

September 24, 2018September 25, 2018
by Coder Kai

Howdy! In this tutorial going to create an AppSync GraphQL Web App with AWS Amplify and IAM Authentication using Cognito User Pools. The reason behind this is, if you are creating an web app quickly, the AWS AppSync, Mobile Hub, DynamoDB will come with all the equipments that you need to scale it. So this is such an attempt but um not using the aws amplify cli to create since I would like to know what my configurations looks like when it comes to web. The App will be a react app to quickly show how its done.

AppSync

Query records for a list of keys in GraphQL…

September 3, 2018
by Coder Kai

If you are using AppSync GraphQL you must be familiar with the queries with filters. In fact, when you are creating a new type structure, AppSync provides default filters to scan an object in your data source. But how can you query records for a list of keys in GraphQL? Unfortunately, it is not defined in the default filters.

My basic requirement is like this

AppSync

How to mutate AWS GraphQL using AWS Lambda

August 26, 2018September 5, 2018
by Coder Kai

Recently, I had to create a AWS Lambda trigger for the AWS DynamoDB table events. The tricky part on this thing was to mutate AWS GraphQL using AWS Lambda with this DynamoDB event. The reason was I wanted all the clients which were subscribed to GraphQL to get this event with modified data.

AppSync

Use AWS GraphQL for React Native Message App

June 28, 2018September 3, 2018
by Coder Kai

Recently I came up with a react native app which needs to integrate AWS GraphQL. Its actually provided with AWS App Sync and a very convenient way if you want a quick pub-sub. The problem was I had to do mutations as a background asynchronous process and wanted to update the app state from that. When I went through the documents I found the AWSAppSyncClient which is an Apollo Client. Although it was promising the react native examples were more focusing towards react or react-native Components which was really making a mess. Read more “Use AWS GraphQL for React Native Message App” →