index.js

@@ -1,4 +1,4 @@
-const storageType = 'sessionStorage'
+const storageType = 'localStorage'
 
 var data = {}
 
@@ -26,7 +26,7 @@ function locallyGetInstances () {
   const item = window[storageType].getItem('instances')
   try {
     return JSON.parse(item)
-  } finally {
+  } catch (_err) {
     return []
   }
 }
@@ -47,6 +47,7 @@ async function remotelyGetInstances () {
     .then((json) => Object.entries(json.instances))
     .then((entries) => entries.filter(([_url, details]) => {
       if (details.network_type !== 'normal') return
+      if (details.uptime == null) return
       if (details.uptime.uptimeDay !== 100) return
       return true
     }))
@@ -55,14 +56,21 @@ async function remotelyGetInstances () {
       console.error(err)
       return []
     })
+  window[storageType].setItem('timestamp', Date.now().toString())
   return instances
 }
 
+// Get local instances
 data.instances = locallyGetInstances()
-const remoteInstances = await remotelyGetInstances()
+
-if (remoteInstances.length > 0) {
+// Fetch remote instances if necessary
-  data.instances = remoteInstances
+const timestamp = +window[storageType].getItem('timestamp')
-  locallySetInstances()
+if (Date.now() > timestamp + 3_600_000 /* 1 hour */) {
+  const remoteInstances = await remotelyGetInstances()
+  if (remoteInstances.length > 0) {
+    data.instances = remoteInstances
+    locallySetInstances()
+  }
 }
 
 if (data.instances.length > 0) {