diff --git a/server.js b/server.js
index 01bbc66..a259a3e 100644
--- a/server.js
+++ b/server.js
@@ -386,7 +386,7 @@ async function handleApi(req,res,pathname){
     const id=Number(new URL(req.url,'http://x').searchParams.get('id')||0);
     if(!Number.isInteger(id)||id<1||id>281474976710655)return json(res,400,{error:'Enter a numeric member ID.'});
     const cached=memberCache.get(id);
-    if(cached&&Date.now()-cached.ts<120000)return json(res,200,cached.data,{'Cache-Control':'public, max-age=60'});
+    if(cached&&Date.now()-cached.ts<120000)return json(res,200,cached.data,{'Cache-Control':'public, max-age=15'});
     try{
       const r=await Promise.race([chain.memberPublic(id),new Promise((_,rej)=>setTimeout(()=>rej(new Error('Blockchain lookup timed out — try again.')),20000))]);
       if(r.registered)r.referralUrl=`${getConfig().dappReferralBaseUrl}${encodeURIComponent(id)}`;
@@ -778,6 +778,11 @@ function checkUpgradeAlerts(){
 setInterval(checkUpgradeAlerts, 5*60*1000).unref();
 setTimeout(checkUpgradeAlerts, 30000).unref();
 chain.startIndexer(evt=>{
+  // Any on-chain event makes cached member views stale (the new member, the
+  // sponsor, every upline's team/pipeline/coach data). Events are infrequent;
+  // just drop the whole member cache so dashboards reflect joins/upgrades on
+  // the next fetch instead of up to 2 minutes later.
+  try{memberCache.clear();}catch(e){}
   try{
     const c=getConfig();
     // teamRootId accepts a comma list ("21,136") — alerts fire for ANY listed org