When discussing microservices, it is better to start with the question of size. Evidently, software systems are growing in size in response to increasing demands from users. The number of features, their complexity and sophistication grow and so do the lines of code in software projects. Even in well-structured living systems, the size of components and their number is getting bigger over time. Given limited human mental capabilities, the proportion of the system that is understood by a single programmer shrinks, which leads to the increased number for developers in the team. Bigger team size leads to the growth of the communication overhead and so less time for writing code, leading to the need for additional developers, which introduces a self-reinforced cycle.
The traditional monolithic way to build systems as a single project with a single deployment...
