How do cookies help in website optimization?

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fregire2018-02-10 22:03:52

PHP

fregire, 2018-02-10 22:03:52

I saw somewhere that cookies are used for good site performance when you visit again (let's say images). How to put it into practice?

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xmoonlight, 2018-02-10
@fregire

Cookies are not used for images. To do this, caching through server headers is used. Cookies - they are used only to store intermediate data: session IDs, interface settings, tracking visits, etc.
Cookies and LocalStorage - do not help in any way in website optimization.