Lovable realtime

Real-Time Database Sync Not Updating in Lovable

Data changes in your Lovable app don't appear in real-time for other users. When one user creates, updates, or deletes a record, other users (or even the same user in another tab) don't see the change until they manually refresh the page.

Real-time functionality is essential for chat apps, collaborative tools, dashboards, and notification systems. When it breaks, your app feels sluggish and outdated compared to modern web applications.

The issue may be subtle — some tables update in real-time while others don't, or real-time works for inserts but not updates or deletes.

Error Messages You Might See

Realtime connection closed Subscription error: not authorized Channel error: timeout Max Realtime connections reached
Realtime connection closedSubscription error: not authorizedChannel error: timeoutMax Realtime connections reached

Common Causes

  • Supabase Realtime not enabled for table — The database table doesn't have Realtime publication enabled in Supabase settings
  • Missing subscription setup — The frontend code doesn't subscribe to real-time changes using Supabase's on() method
  • RLS blocking Realtime — Row Level Security policies prevent the subscription from receiving updates the user should see
  • Channel not cleaned up — Multiple subscriptions accumulate on component re-renders, causing memory leaks and missed events
  • Free tier limits — Supabase free tier limits concurrent Realtime connections, dropping connections when exceeded

How to Fix It

  1. Enable Realtime for the table — In Supabase dashboard → Database → Replication, enable Realtime for the specific table
  2. Set up subscription correctly — Use supabase.channel('table-changes').on('postgres_changes', { event: '*', schema: 'public', table: 'your_table' }, callback).subscribe()
  3. Check RLS policies — Ensure your RLS policies allow SELECT for the subscribed user on the rows they need to see
  4. Clean up subscriptions — In React, return a cleanup function from useEffect that removes the subscription when the component unmounts
  5. Monitor connection status — Subscribe to channel status changes to detect and handle disconnections

Real developers can help you.

legrab legrab I'll fill this later Anthony Akpan Anthony Akpan Developer with 8 years of experience building softwares fro startups Kingsley Omage Kingsley Omage Fullstack software engineer passionate about AI Agents, blockchain, LLMs. MFox MFox Full-stack professional senior engineer (15+years). Extensive experience in software development, qa, and IP networking. Basel Issmail Basel Issmail ’m a Senior Full-Stack Developer and Tech Lead with experience designing and building scalable web platforms. I work across the full development lifecycle, from translating business requirements into technical architecture to delivering reliable production systems. My work focuses on modern web technologies, including TypeScript, Angular, Node.js, and cloud-based architectures. I enjoy solving complex technical problems and helping teams turn product ideas and prototypes into working platforms that can grow and scale. In addition to development, I often collaborate closely with product managers, business analysts, designers, and QA teams to ensure that solutions align with both technical and business goals. I enjoy working with startups and product teams where I can contribute both as a hands-on engineer and as a technical partner in designing and delivering impactful software. Omar Faruk Omar Faruk As a Product Engineer at Klasio, I contributed to end-to-end product development, focusing on scalability, performance, and user experience. My work spanned building and refining core features, developing dynamic website templates, integrating secure and reliable payment gateways, and optimizing the overall system architecture. I played a key role in creating a scalable and maintainable platform to support educators and learners globally. I'm enthusiastic about embracing new challenges and making meaningful contributions. PawelPloszaj PawelPloszaj I'm fronted developer with 10+ years of experience with big projects. I have small backend background too David Olverson David Olverson Solo dev shipping production apps with AI-assisted development. I specialize in rescuing broken Lovable/Bolt/Cursor builds and taking them to production. 10+ apps shipped including SaaS CRMs, gaming platforms, real estate tools, and Discord bots. Stack: Next.js 16, TypeScript, Tailwind CSS, FastAPI, PostgreSQL, Prisma. I use Claude Code with 50+ custom skills for rapid delivery. Average turnaround: 2-4 weeks from broken prototype to production. hanson1014 hanson1014 Full-stack developer experienced in fixing and deploying AI-generated apps from Lovable, Bolt.new, Cursor, and Replit. I specialize in debugging Supabase integration issues (auth flows, RLS policies, database connections), fixing broken deployments, resolving routing/blank screen problems, and cleaning up messy React/Vite codebases. I also build production apps with the Claude API and have shipped a Mac desktop dev tool (Nexterm from scratch. Based in Hong Kong, fast turnaround. Milan Surelia Milan Surelia Milan Surelia is a Mobile App Developer with 5+ years of experience crafting scalable, cross-platform apps at 7Span and Meticha. At 7Span, he engineers feature-rich Flutter apps with smooth performance and modern UI. As the Co-Founder of Meticha, he builds open-source tools and developer-focused products that solve real-world problems. Expertise: 💡 Developing cross-platform apps using Flutter, Dart, and Jetpack Compose for Android, iOS, and Web. 🖋️ Sharing insights through technical writing, blogging, and open-source contributions. 🤝 Collaborating closely with designers, PMs, and developers to build seamless mobile experiences. Notable Achievements: 🎯 Revamped the Vepaar app into Vepaar Store & CRM with a 2x performance boost and smoother UX. 🚀 Launched Compose101 — a Jetpack Compose starter kit to speed up Android development. 🌟 Open source contributions on Github & StackOverflow for Flutter & Dart 🎖️ Worked on improving app performance and user experience with smart solutions. Milan is always happy to connect, work on new ideas, and explore the latest in technology.

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Frequently Asked Questions

How many real-time connections can I have on the free tier?

Supabase free tier allows up to 200 concurrent Realtime connections. Each browser tab or user session uses at least one connection. If you exceed this, new connections are rejected.

Does Realtime work with Row Level Security?

Yes, but the RLS policies must allow the subscribing user to SELECT the rows they want to receive updates for. If RLS blocks the query, the subscription won't receive events.

Related Lovable Issues

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