Adjust cache header

endpoints/npm.ts

@@ -1,6 +1,6 @@
 import cheerio from 'cheerio'
 import got from '../libs/got'
-import { millify, stars, version, versionColor } from '../libs/utils'
+import { millify, version, versionColor } from '../libs/utils'
 import {
   badgenServe,
   BadgenServeMeta as Meta,

libs/serve-badge.ts

@@ -31,7 +31,8 @@ export default function (req, res, options: ServeBadgeOptions) {
   })
 
   const staleControl = `stale-while-revalidate=604800, stale-if-error=604800`
-  res.setHeader('Cache-Control', `public, max-age=10, s-maxage=${sMaxAge}, ${staleControl}`)
+  const cacheControl = `public, max-age=20, s-maxage=${sMaxAge}, ${staleControl}`
+  res.setHeader('Cache-Control', cacheControl)
   res.setHeader('Content-Type', 'image/svg+xml;charset=utf-8')
   res.statusCode = code
   res.end(badge)