What is HTTP 504 Gateway Timeout?
The 504 Gateway Timeout response occurs when a server acting as a gateway waits too long for another server to respond.
It is common in distributed systems where multiple services communicate with each other.
Common Causes
- Slow backend services
- Database performance issues
- Network latency
- Incorrect timeout configuration
- Overloaded services
DevOps Troubleshooting
- Check application performance
- Review proxy timeout settings
- Inspect infrastructure metrics
- Analyse distributed tracing data
Summary
The 504 Gateway Timeout response indicates that an upstream service failed to respond quickly enough.