AWS Load Balancer Support
AWS Load Balancer support, troubleshooting and optimization.
Application and Network Load Balancers sit in front of everything, so misconfiguration here looks like an outage even when your servers are fine.
Common Load Balancer problems we fix
The Elastic Load Balancing issues our engineers see most often, and how we resolve them.
ALB 502 Bad Gateway
A 502 means the target closed the connection or sent an invalid response. Keep-alive timeouts shorter than the ALB idle timeout, crashed processes and protocol mismatches are the usual causes. We align timeouts and verify target behavior.
ALB 503 Service Unavailable
A 503 means no healthy targets are registered. We check target group health checks, security groups between the load balancer and targets, and deployments that deregistered everything.
ALB 504 Gateway Timeout
The target did not respond within the idle timeout. Slow backends, database locks and NAT or security group drops cause this. We trace the slow path and adjust timeouts only after fixing the cause.
Targets unhealthy but the app works
Health check path, port, expected status codes and the security group allowing the load balancer matter. We correct the health check definition and thresholds.
Load balancer costs and unused load balancers
Idle ALBs and NLBs cost money every hour. We find load balancers with no targets or traffic and consolidate hosts behind one ALB with host-based rules.
How We Help With Load Balancer
Senior AWS engineers who explain what they change and why.
What we do
- Listener rules, routing and TLS setup
- Health check and timeout tuning
- WAF and access log integration
- Consolidation to cut load balancer cost
How it works
- Tell us what is wrong or what you want to improve
- We review with read-only access first
- We fix, explain and document the change
- We hand off with monitoring so it stays fixed
Specialized Load Balancer support
Deep-dive help for specific Load Balancer tasks.
ALB 502, 503 and 504 errors: find which side is failingFix Application Load Balancer 502 Bad Gateway, 503 and 504 Gateway Timeout errors. TwinTix uses access logs and metrics to find the failing hop.
ALB vs NLB: choosing the right AWS load balancerChoosing between ALB, NLB and Gateway Load Balancer? TwinTix compares routing, client IP, TLS, static IPs and cost to match the right type to your app.
ALB access logs: enable them and analyze with AthenaTurn ALB access logs into answers. TwinTix enables logging to S3, builds Athena tables and queries for 5xx errors, slow targets and top clients.
Target group health check failures: decode the reason and fix itTargets unhealthy in your ALB or NLB target group? TwinTix decodes the reason codes and fixes ports, paths, security groups and timing.
Frequently Asked Questions
What is the difference between ALB and NLB?
ALB works at layer 7 with HTTP routing rules. NLB works at layer 4, handles extreme throughput and static IPs, and suits non-HTTP traffic.
How do I debug ALB 5xx errors?
Enable access logs and compare ELB 5xx with target 5xx counts in CloudWatch. That shows whether the load balancer or your application produced the error.
Can you set up HTTPS and redirects?
Yes. We configure ACM certificates, HTTPS listeners and HTTP to HTTPS redirects.
Need Help With Elastic Load Balancing?
Schedule an appointment. Describe the problem and we will tell you the fastest safe way to fix it.
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