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Cache-Control Directives

· 14 min read
Phan Thanh Sang
Front End Engineer @ Sea Limited

Caching is one of the most powerful tools for optimizing web performance. The Cache-Control HTTP header provides fine-grained control over how browsers and intermediary caches store and reuse HTTP responses. In this article, we'll explore the most important Cache-Control directives and understand when and how to use them effectively.