BREAKING: Supabase Realtime Latency Issues — Workarounds Inside

Supabase experiencing elevated Realtime latency. Immediate workarounds and status monitoring guidance for affected developers.

Current Status

Supabase is reporting Realtime latency issues affecting real-time subscriptions and live data synchronization. This impacts applications relying on the Realtime module for instant data updates.

What's Affected

Realtime subscriptions: Database change notifications experiencing delays

Live queries: Delayed propagation of INSERT, UPDATE, DELETE events

Presence tracking: Potential delays in user status/presence updates

Broadcast channels: Message delivery latency may be elevated

Note: Standard REST API and PostgREST endpoints appear unaffected based on current reports.

How to Check If You're Affected

1. Monitor your Realtime subscriptions: Check application logs for delayed event delivery 2. Review Supabase Status Page: https://status.supabase.com/ 3. Check browser console: Look for WebSocket connection warnings or timeouts 4. Test with simple query: ```javascript const channel = supabase.channel('test') channel.on('postgres_changes', { event: '*', schema: 'public' }, payload => { console.log('Event received:', new Date().toISOString()) }).subscribe() ```

Immediate Workarounds

1. Polling Fallback

Implement polling for critical data: ```javascript setInterval(async () => { const { data } = await supabase .from('table_name') .select('*') .order('updated_at', { ascending: false }) .limit(1) }, 5000) // Poll every 5 seconds ```

2. Reduce Subscription Load

Narrow channel filters to essential data only

Unsubscribe from non-critical channels temporarily

Implement reconnection logic with exponential backoff

3. Use REST API Instead

Switch temporarily to polling via REST endpoints: ```javascript const checkUpdates = async () => { const { data } = await supabase .from('your_table') .select('*') .gt('updated_at', lastCheckTime) } ```

4. Implement Client-Side Retry Logic

```javascript const subscribeWithRetry = (channel, maxRetries = 3) => { let retries = 0 const subscribe = () => { channel.subscribe((status) => { if (status === 'SUBSCRIBED') retries = 0 if (status === 'CLOSED' && retries < maxRetries) { retries++ setTimeout(subscribe, 1000 * retries) } }) } subscribe() } ```

Alternatives During Outage

Firebase Realtime Database: Quick migration option with similar features

PubNub: Managed real-time messaging platform

Socket.io + Node backend: Self-hosted solution for real-time updates

Server-Sent Events (SSE): Simpler than WebSockets for one-way updates

What We Don't Know Yet

Exact root cause of latency spike

Expected resolution time

Whether all geographic regions are equally affected

If specific subscription types are more impacted than others

Next Steps

1. Subscribe to updates: Watch https://status.supabase.com/ for resolution 2. Join Supabase Discord: #status-incidents channel for real-time updates 3. Implement workarounds: Deploy polling fallback immediately if Realtime is critical 4. Document incident: Log timestamps of degraded performance for your team

Last Updated: Monitor status page for latest information.