Test

Author: codergautam

.claude/settings.local.json

@@ -9,7 +9,8 @@
       "Bash(ls:*)",
       "Bash(git push:*)",
       "Bash(grep:*)",
-      "Bash(mkdir:*)"
+      "Bash(mkdir:*)",
+      "Bash(npm run build:*)"
     ],
     "deny": []
   }

api/leaderboard.js

@@ -1,8 +1,9 @@
 import User from '../models/User.js';
 import UserStats from '../models/UserStats.js';
 
-// Improved caching with separate keys for different modes
-const CACHE_DURATION = 60000; // 1 minute cache
+// Production-scale caching for 2M+ users
+const CACHE_DURATION = 300000; // 5 minute cache for production performance
+const DAILY_CACHE_DURATION = 180000; // 3 minute cache for daily leaderboards (more frequent updates)
 const cache = new Map();
 
 function getCacheKey(mode, pastDay) {
@@ -11,7 +12,8 @@ function getCacheKey(mode, pastDay) {
 
 function getCachedData(key) {
   const cached = cache.get(key);
-  if (cached && Date.now() - cached.timestamp < CACHE_DURATION) {
+  const cacheDuration = key.includes('daily') ? DAILY_CACHE_DURATION : CACHE_DURATION;
+  if (cached && Date.now() - cached.timestamp < cacheDuration) {
     return cached.data;
   }
   return null;

components/gameUI.js

@@ -794,7 +794,7 @@ singlePlayerRound={singlePlayerRound} onboarding={onboarding} countryGuesser={co
   }} panoShown={showPanoOnResult} />
 
     {/* Critical timer screen warning effect */}
-    {((timeToNextMultiplayerEvt <= 5 && timeToNextMultiplayerEvt > 0 && multiplayerTimerShown && !showAnswer && !pinPoint && multiplayerState?.inGame && multiplayerState?.gameData?.state === 'guess') || 
+    {((timeToNextMultiplayerEvt <= 5 && timeToNextMultiplayerEvt > 0 && multiplayerTimerShown && !showAnswer && !pinPoint && multiplayerState?.inGame && multiplayerState?.gameData?.state === 'guess') ||
       (timeToNextRound <= 5 && timeToNextRound > 0 && onboardingTimerShown && !showAnswer && !pinPoint && onboarding)) && (
       <div className="screen-critical-warning" />
     )}

models/UserStats.js

@@ -60,12 +60,19 @@ const userStatsSchema = new mongoose.Schema({
   }
 });
 
-// Compound indexes for efficient querying
+// Production-grade indexes for 2M+ users with 20k daily active
 userStatsSchema.index({ userId: 1, timestamp: -1 }); // User's stats over time (descending)
 userStatsSchema.index({ userId: 1, timestamp: 1 });  // User's stats over time (ascending)
 userStatsSchema.index({ timestamp: -1, xpRank: 1 });  // Leaderboard snapshots by XP
 userStatsSchema.index({ timestamp: -1, eloRank: 1 }); // Leaderboard snapshots by ELO
 
+// CRITICAL: Production performance indexes for daily leaderboards
+userStatsSchema.index({ timestamp: -1, userId: 1 }); // Efficient timestamp range + userId lookup
+userStatsSchema.index({ timestamp: -1, totalXp: -1 }); // Fast XP leaderboard by time
+userStatsSchema.index({ timestamp: -1, elo: -1 }); // Fast ELO leaderboard by time
+userStatsSchema.index({ timestamp: -1, userId: 1, totalXp: -1 }); // Compound for XP daily queries  
+userStatsSchema.index({ timestamp: -1, userId: 1, elo: -1 }); // Compound for ELO daily queries
+
 // Static methods for common queries
 userStatsSchema.statics = {