September 2018
Intermediate to advanced
764 pages
20h 6m
English
Scalability is a measure of how well a system can grow in order to handle higher demands, while still maintaining the same levels of performance.
The demand may arise as part of a sustained growth in user uptake, or it may be due to a sudden peak of traffic (for example, a food delivery application is likely to receive more requests during lunch hours).
A highly scalable system should constantly monitor its constituent components and identify components which are working above a "safe" resource limit, and scale that component either horizontally or vertically.
We can increase scalability in two ways:
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