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Cascade Email Queue Processing Halted
Email notifications are not being sent after Cascade modified the email queue processing. Emails remain stuck in the queue indefinitely, and users don't receive important notifications like fix approvals or payment confirmations.
Cascade likely broke the async email worker or message consumer.
Error Messages You Might See
Email queue size: 1523 (growing)
Message consumer crashed
Failed to deserialize email message
SMTP connection failed
Common Causes
- Cascade removed @EnableAsync or @EnableScheduling from configuration
- Email consumer bean deleted or configuration modified
- Message queue serialization broken - messages can't be deserialized
- Cascade added exception in email processing that stops worker thread
How to Fix It
Ensure @EnableAsync is on configuration class and email sending is marked @Async. Check message queue (RabbitMQ, SQS, etc.) for messages. Review error logs for exceptions in email consumer. Test sending email manually to verify SMTP configuration. Monitor queue size and consumer status.
Real developers can help you.
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I've been working at a large software company named Kainos for 2 years, and mainly specialise in Platform Engineering. I regularly enjoy working on software products outside of work, and I'm a huge fan of game development using Unity. I personally enjoy Python & C# in my spare time, but I also specialise in multiple different platform-related technologies from my day job.
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Dor Yaloz
SW engineer with 6+ years of experience,
I worked with React/Node/Python
did projects with React+Capacitor.js for ios
Supabase expert
zipking
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5 years+ Experienced Dev (Specially in Web Development), can help in python, javascript, react, next.js and full stack web dev technologies.
Sage Fulcher
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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.
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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 check email queue status?
Use message broker UI (RabbitMQ, SQS Console). Check queue depth and consumer count.
How do I reprocess stuck emails?
Manually trigger resend or purge and reseed queue. Check why messages failed first.