#174

1. Reduced Polling Frequency:

// Before: 30 seconds (excessive)
const interval = setInterval(updatePresence, 30000);

// After: 2 minutes (optimized)
const interval = setInterval(updatePresence, 120000);

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2. Connection Pooling Implemented:

// Shared channels instead of multiple connections
const messageChannels = new Map<number, any>();
const channelSubscribers = new Map<number, Set<() => void>>();
let sharedPresenceChannel: any = null;

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3. Proper Cleanup:

// Clean up shared channel if no subscribers
if (presenceSubscribers.size === 0 && sharedPresenceChannel) {
supabase.removeChannel(sharedPresenceChannel);
sharedPresenceChannel = null;
}

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4. Error Handling Added:

try {
await supabase.from('UserPresence').upsert({...});
} catch (error) {
console.warn('Failed to update presence:', error);
}

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Performance Improvements:
75% less network requests (2 min vs 30 sec intervals)

Connection pooling prevents multiple channels

Memory leak prevention with proper cleanup

Error resilience with try-catch blocks

Issue #174 resolved! 🚀