Detailed component design

Dig deeper into 2-3 components and explain in detail how they work. For example, how well does each component scale? Any relevant algorithm or data structure you like to use for a component? Also you could draw a diagram using the diagramming tool to enhance your design...

As Mongodb is easily scalable and we will shart the database on the basis of composite shard key that is tempreate and timestamp using this we can ealisy scale the database and using messaging queue or kafka the system is asynchronous so the databse and api server can scale independently.

As api servers are stateless so it can be scaled horizontally without any issues.

For Data consistency we can use read quoram than is w+r>n

where w is number of nodes on which data is written and r is number of nodes from data is read then the data will be consisten.