I am planning to develop a scalable chat application as a part of a project, project is mobile app hoping to expand to the web. I came to consider the following options
Currently I am using Firebase in my mobile app for other things (authentication and etc).
My findings :
Firebase documentation is super friendly and easy to get started with less time.
According to my calculations using Firestore seems cheaper than AppSync (cost of AppSync + DynamoDB vs cost of Firestore)
There are certain limits in Firestore according to docs.
AppSync is uses GraphQL so have more granular access to data.
I searched for comparison between AppSync and Cloud Firestore but did not find any good in-depth comparison.
What are the pros and cons of using AWS AppSync vs Firestore for scalable chat application?
