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The cacheLife option allows you to define custom cache profiles when using the cacheLife function inside components or functions, and within the scope of the use cache directive.
To define a profile, enable the cacheComponents flag and add the cache profile in the cacheLife object in the next.config.js file. For example, a blog profile:
import type { NextConfig } from 'next'
const nextConfig: NextConfig = {
cacheComponents: true,
cacheLife: {
blog: {
stale: 3600, // 1 hour
revalidate: 900, // 15 minutes
expire: 86400, // 1 day
},
},
}
export default nextConfig
module.exports = {
cacheComponents: true,
cacheLife: {
blog: {
stale: 3600, // 1 hour
revalidate: 900, // 15 minutes
expire: 86400, // 1 day
},
},
}
You can now use this custom blog configuration in your component or function as follows:
import { cacheLife } from 'next/cache'
export async function getCachedData() {
'use cache'
cacheLife('blog')
const data = await fetch('/api/data')
return data
}
import { cacheLife } from 'next/cache'
export async function getCachedData() {
'use cache'
cacheLife('blog')
const data = await fetch('/api/data')
return data
}
The configuration object has key values with the following format:
| Property | Value | Description | Requirement |
| ------------ | --------- | --------------------------------------------------------------------------------------------------------- | ------------------------------------------- |
| stale | number | Duration the client should cache a value without checking the server. | Optional |
| revalidate | number | Frequency at which the cache should refresh on the server; stale values may be served while revalidating. | Optional |
| expire | number | Maximum duration for which a value can remain stale before switching to dynamic. | Optional - Must be longer than revalidate |
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