Network Congestion and Latency
In our monolithic application, when a request comes in, it’s processed by some instance of the application and a response is sent. Libraries are deployed with the application and calls to these libraries are fast and in-process. The application can make a small number of requests to a database or other services.
In the case of a microservices architecture, a single request to the application can result in multiple requests to a number of services. Each of the services could be making requests on their databases, caches, and other services. This I/O explosion can have a negative impact on the performance of an application and as a result optimizations in network communication becomes important. As shown in Figure ...
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