February 2019
Intermediate to advanced
446 pages
10h 55m
English
Content preview from Mastering Microservices with Java - Third Edition
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Elastic
An event-based system is elastic if it reacts to the load by utilizing the hardware and other resources optimally. It can bring up new instances of a microservice or microservices if the demand increases, and vice versa. On special sales days, such as Black Friday, Christmas, Diwali, and so on, an event-based shopping application would instantiate a greater number of microservice nodes in order to share the load of increased requests. On normal days, the shopping application may not require a larger number of resources than average, and so it can reduce the number of nodes. Therefore, to effectively use the hardware, an event-based system should be elastic in nature.
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