What really is scaling?

Question

I\'ve heard that people say that they\'ve made a scalable web application..

1. What really is scaling?

2. What can be done by developers to make their

Answer 1

What really is scaling?

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Scaling means accommodating increases in usage and data volume, and ideally the implementation should be maintainable.

What developers do to make their application scalable?

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Use a database, but cache as much as possible while accommodating user experience (possibly in the session).

Any tips and tricks about scaling web applications...

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There are lots, but it depends on the implementation. What programming language(s), what database, etc. The question needs to be refined.