The load on different parts of the application is typically very different. For example, in the case of a flight booking application, a customer usually searches multiple times before making a decision on whether to book a flight. The load on the search module would typically be many times more than the load on the booking module. The microservices architecture provides the flexibility of setting up multiple instances of the search service with few instances of the booking service.
The following figure shows how we can scale up specific microservices based on the load:
Microservices 2 and 3 share a single box (the ...
