chore: more stats info

libs/serve-api.js

@@ -33,7 +33,10 @@ const apiHandlers = Object.entries(liveFunctions).map(([name, fn]) => {
 })
 
 const indexContent = fs.readFileSync(path.join(__dirname, 'index-api.md'), 'utf8')
-const serveIndex = (req, res) => send(res, 200, indexContent)
+const serveIndex = (req, res) => {
+  res.setHeader('Cache-Control', 'public, max-age=60, s-maxage=86400')
+  send(res, 200, indexContent)
+}
 
 module.exports = router()(
   get('/', serveIndex),

libs/serve-stats.js

@@ -5,8 +5,14 @@ const livePool = require('./live-pool.js')
 module.exports = async (req, res) => {
   const [githubRateLimit] = await Promise.all([getGithubRateLimit()])
   const fetching = Object.values(livePool.list()).filter(Boolean).length
+  const cpuUsage = process.cpuUsage()
+  const memUsage = process.memoryUsage()
 
-  send(res, 200, { githubRateLimit, fetching })
+  const stats = { githubRateLimit, fetching, cpuUsage, memUsage }
+
+  res.setHeader('Content-Type', 'application/json; charset=utf-8')
+  res.setHeader('Cache-Control', 'public, max-age=1, s-maxage=1')
+  send(res, 200, JSON.stringify(stats, null, 2))
 }
 
 const getGithubRateLimit = () => {