928b01d1e3
* Cache in fastly much longer than browser * Update render-page.js * Update cache-control.js
36 lines
878 B
JavaScript
36 lines
878 B
JavaScript
// Return a function you can pass a Response object to and it will
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// set the `Cache-Control` header.
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//
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// For example:
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//
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// const cacheControlYear = getCacheControl(60 * 60 * 24 * 365)
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// ...
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// cacheControlYear(res)
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// res.send(body)
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//
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// Or, if you want to make it definitely not cache:
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//
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// const noCacheControl = getCacheControl(0) // you can use `false` too
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// ...
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// noControlYear(res)
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// res.send(body)
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//
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// Max age is in seconds
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export function cacheControlFactory(
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maxAge = 60 * 60,
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{ key = 'cache-control', public_ = true, immutable = false } = {}
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) {
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const directives = [
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maxAge && public_ && 'public',
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maxAge && `max-age=${maxAge}`,
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maxAge && immutable && 'immutable',
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!maxAge && 'private',
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!maxAge && 'no-store',
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]
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.filter(Boolean)
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.join(', ')
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return (res) => {
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res.set(key, directives)
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}
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}
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