You've built a tiered application with backend services hosted on AWS and user front end built as an Android native mobile application.
You wish to expand your user pool and have decided to build an iOS native application.
What is the recommended approach to ensure your user's data is synchronized across various user devices?
Click on the arrows to vote for the correct answer
A. B. C. D.Answer: B.
Option A is incorrect because it is not the most suitable solution to the problem.
Option B is CORRECT because AWS AppSync enables subscriptions to synchronize data across devices.
Option C is incorrect because it is not the most suitable solution to the problem.
Option D is incorrect because cross-region read replicas are used for cross-region disaster recovery or improving the read performance of databases.
Reference:
https://aws.amazon.com/appsync/product-details/The recommended approach to ensure that user data is synchronized across various user devices when building an iOS native application is to use AWS AppSync.
AWS AppSync is a managed service that makes it easy to develop GraphQL APIs by handling the heavy lifting of securely connecting to data sources like AWS DynamoDB, AWS Lambda, and more. It provides real-time data synchronization and offline capabilities for mobile and web applications.
With AWS AppSync, developers can create real-time subscriptions that notify application clients of changes to data in near real-time. This ensures that all connected devices have access to the latest data without requiring the user to manually refresh the application. Additionally, AWS AppSync has built-in support for offline access, allowing users to continue using the application and updating data even when there is no internet connection.
AWS Lambda is a serverless compute service that allows developers to run code without provisioning or managing servers. While it can be used to push data across application clients, it is not an ideal solution for data synchronization as it does not provide real-time updates and would require significant development effort to implement.
Mobile application clients can subscribe to AWS SNS topics to receive synchronization updates, but this would require additional configuration and management of SNS topics, which can increase complexity and cost.
Using cross-region read replicas for the backend service database can help with scaling and availability, but it does not provide real-time data synchronization across devices.
Therefore, the recommended approach is to use AWS AppSync to ensure that user data is synchronized across various user devices in near real-time.