feature: DNS cache + subdomain CRUD + domains cleanup

backend/public/js/main.js

@@ -1,8 +1,9 @@
 document.addEventListener("DOMContentLoaded", async () => {
 
+    clearDNSCache()
     await refreshAll()
 
-    setInterval(refreshAll, 30000)
+    setInterval(refreshAll, 60000)
 
 })
 
@@ -31,3 +32,10 @@ async function refreshAll(){
 
     refreshing = false
 }
+
+
+function clearDNSCache(){
+    for(const key in dnsCache){
+        delete dnsCache[key]
+    }
+}