Bolt
realtime
Chat Messages Not Updating in Real-Time in Bolt App
Your Bolt.new chat feature saves messages to the database correctly, but other participants don't see new messages until they manually refresh the page. The chat feels like an email inbox rather than a live conversation, making real-time communication impossible.
Users expect chat to be instant - messages should appear within milliseconds of being sent. When they have to refresh the page to see responses, they assume the feature is broken and will abandon it for a working alternative. This is a fundamental functionality issue that undermines the entire purpose of a chat feature.
The root cause is that Bolt generated a working CRUD interface for messages (create, read, update, delete) but didn't implement the real-time subscription layer that pushes new messages to connected clients as they arrive.
Error Messages You Might See
Realtime connection failed: WebSocket error
Supabase Realtime: Table not enabled for replication
Channel already joined
Error: Maximum number of Realtime channels exceeded
WebSocket connection to 'wss://...' failed
Common Causes
- No real-time subscription — Messages are fetched on page load but there's no WebSocket or Supabase Realtime subscription to receive new messages
- Supabase Realtime not enabled — The Realtime feature is not turned on for the messages table in the Supabase dashboard
- Subscription filter too broad or narrow — The Realtime subscription listens to the wrong table, wrong event type, or wrong filter condition
- New messages not added to local state — The subscription receives events but the callback doesn't append the new message to the displayed list
- Channel not subscribed — The channel is created but .subscribe() was never called, so no events are received
- Cleanup function missing — Previous subscriptions aren't cleaned up on component unmount, causing duplicate messages or memory leaks
How to Fix It
- Enable Realtime on your table — In Supabase dashboard, go to Database > Replication and enable Realtime for your messages table
- Add a Realtime subscription — Subscribe to new messages: useEffect(() => { const channel = supabase.channel('messages').on('postgres_changes', { event: 'INSERT', schema: 'public', table: 'messages', filter: `chat_id=eq.${chatId}` }, (payload) => { setMessages(prev => [...prev, payload.new]); }).subscribe(); return () => { supabase.removeChannel(channel); }; }, [chatId])
- Handle all event types — Subscribe to INSERT, UPDATE, and DELETE events to handle new messages, edits, and deletions
- Auto-scroll to new messages — After adding a new message to state, scroll the chat container to the bottom: messagesEndRef.current?.scrollIntoView({ behavior: 'smooth' })
- Add optimistic updates — Show sent messages immediately in the UI before the database confirms, then reconcile when the Realtime event arrives
- Clean up subscriptions — Always remove channels in the useEffect cleanup function to prevent memory leaks and duplicate messages
Real developers can help you.
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.
Matt Butler
Software Engineer @ AWS
Kingsley Omage
Fullstack software engineer passionate about AI Agents, blockchain, LLMs.
ISHANTDEEP SINGH
Senior Software Engineer with 7+ years of experience in React, JavaScript, TypeScript, Next.js, and Node.js. I’ve also worked as a tech lead for startups, owning end-to-end technical execution including architecture, development, scaling, and delivery. I bring a strong mix of hands-on coding, product thinking, and technical leadership, and I’m comfortable building products from scratch as well as improving and scaling existing systems.
Victor Denisov
Developer
MFox
Full-stack professional senior engineer (15+years). Extensive experience in software development, qa, and IP networking.
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.
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Antriksh Narang
5 years+ Experienced Dev (Specially in Web Development), can help in python, javascript, react, next.js and full stack web dev technologies.
Vlad Temian
15+ years shipping production infrastructure for startups. Former CTO at qed.builders (acquired by The Sandbox).
Cursor ambassador and agentic tooling builder.
I've scaled systems, automated deployments, and built observability tools for AI coding workflows. I specialize in taking vibe-coded apps from broken prototype to production-ready: fixing Supabase auth/RLS, Stripe integrations, deployment pipelines, and cleaning up AI-generated spaghetti.
I build tools in this space (agentprobe, claudebin, micode) and understand both sides: how AI generates code and why it breaks.
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Alvin Voo
I’ve watched the tech landscape evolve over the last decade—from the structured days of Java Server Pages to the current "wild west" of Agentic-driven development. While AI can "vibe" a frontend into existence, I specialize in the architecture that keeps it from collapsing.
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You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.
Get HelpFrequently Asked Questions
How do I enable Supabase Realtime for my messages table?
Go to Supabase dashboard > Database > Replication. Toggle on the messages table. Then in your code, subscribe to postgres_changes events on that table. Note that Realtime must be enabled per-table, it's not on by default.
Why do I see duplicate messages with Realtime?
This usually happens when the subscription callback adds the message but you also add it when sending. Either use optimistic updates (add on send, reconcile on subscription) or only add messages through the subscription callback. Also ensure you clean up subscriptions in useEffect cleanup to prevent duplicate listeners.