AWS AppSync Interview Questions
1. What is AWS App Sync and what is it used for?
AWS App Sync is a fully managed serverless GraphQL service that makes it easy to build and deploy GraphQL applications. GraphQL is a query language for your API that enables you to request and receive data from your API in a flexible and efficient way.
AWS App Sync is used for building and deploying serverless GraphQL applications. Some common use cases for AWS App Sync include:
- Building real-time applications that require low-latency data updates, such as chat or collaboration tools, social networking applications, and gaming applications.
- Building applications that need to retrieve data from multiple sources and make it available to clients in a unified way.
- Building applications that need to support offline data access and synchronization, such as mobile applications.
- Building applications that need to support real-time data subscriptions, such as stock tickers or sports scores.
- Building applications that need to support complex data relationships, such as social networking applications or e-commerce platforms.
Overall, AWS AppSync is a powerful tool for building and deploying GraphQL applications that need to support real-time data updates and subscriptions, offline data access, and complex data relationships.
2. How does AWS AppSync work with Amazon DynamoDB and Amazon Elasticsearch Service?
AWS AppSync allows you to build GraphQL APIs that are backed by Amazon DynamoDB and Amazon Elasticsearch Service.
With Amazon DynamoDB, you can use AWS AppSync to create GraphQL APIs that read and write data to DynamoDB tables. You can use the GraphQL schema and resolvers provided by AWS AppSync to specify the mapping between the GraphQL API and the DynamoDB tables.Choose whether you want to use a GraphQL schema provided by AWS AppSync or upload your own GraphQL schema. If you choose to use a provided schema, you can select from a variety of pre-defined schema templates, such as “Blogging,” “Todo List,” or “Notes.”If you choose to upload your own GraphQL schema, you can do so by pasting it into the schema editor or by specifying the location of a local file or a file stored in an S3 bucket.
3. Can you explain how to set up and configure AWS AppSync for a new project?
To set up and configure AWS AppSync for a new project, you can follow these steps:
- Sign in to the AWS Management Console and navigate to the AWS AppSync dashboard.
- Click the “Create API” button to create a new GraphQL API.
- Give your API a name and select the “Create New” option under “Authentication type.” This will create a new Amazon Cognito User Pool to store and manage the identities of your API’s users.
- Choose whether you want to use a GraphQL schema provided by AWS AppSync or upload your own GraphQL schema. If you choose to use a provided schema, you can select from a variety of pre-defined schema templates, such as “Blogging,” “Todo List,” or “Notes.”
- If you choose to upload your own GraphQL schema, you can do so by pasting it into the schema editor or by specifying the location of a local file or a file stored in an S3 bucket.
For More Information:https://www.datacademy.ai/aws-appsync-interview-questions/
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