Why is scalability in a microservices architecture better than in a monolith?

The scalability of microservices architecture is better than that of a monolith due to several key factors:

• Isolated scaling: each microservice can be scaled independently, depending on the load on that specific service, rather than the entire monolith.
• Technology flexibility: different microservices can use different technologies and databases that are best suited for their tasks.
• Fault tolerance: the failure of one microservice does not lead to the failure of the entire system, increasing overall reliability.
• Rapid deployment and updates: microservices can be updated and deployed independently, simplifying load management and the implementation of improvements.

In a monolith, scaling usually occurs vertically (increasing resources of a single application), which is limited by the physical capabilities of the server and is less effective as the load increases.

Thus, microservices architecture allows for more flexible and efficient resource utilization, adapting to the actual needs of the system.