What is the Cache-Control header in HTTP?
The Cache-Control header is used to specify directives for caching mechanisms in both requests and responses.
Why is it important for web performance?
It helps control how, and for how long, resources are cached, improving load times and reducing server load.
Can you give me an example of how to use it?
Sure! A common example is Cache-Control: no-cache
, which tells browsers to always check for a fresh version.
Are there different directives I should know about?
Yes, there are several, including max-age
, public
, and private
, each serving different caching needs.
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