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Load Balancer Setup
Table of Contents
Overview
When to Use
Quick Start
Reference Guides
Best Practices
Overview
Deploy and configure load balancers to distribute traffic across multiple backend servers, ensuring high availability, fault tolerance, and optimal resource utilization across your infrastructure.
When to Use
Multi-server traffic distribution
High availability and failover
Session persistence and sticky sessions
Health checking and auto-recovery
SSL/TLS termination
Cross-region load balancing
API rate limiting at load balancer
DDoS mitigation
Quick Start
Minimal working example:
# /etc/haproxy/haproxy.cfg
global
log stdout local0
log stdout local1 notice
maxconn 4096
daemon
# Security
tune.ssl.default-dh-param 2048
ssl-default-bind-ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256
ssl-default-bind-options ssl-min-ver TLSv1.2
defaults
log global
mode http
option httplog
option denylogin
option forwardfor
option http-server-close
# Timeouts
timeout connect 5000
timeout client 50000
timeout server 50000
// ... (see reference guides for full implementation)
Reference Guides
Detailed implementations in the references/ directory:
Guide
Contents
HAProxy Configuration
HAProxy Configuration
AWS Application Load Balancer (CloudFormation)
AWS Application Load Balancer (CloudFormation)
Load Balancer Health Check Script
Load Balancer Health Check Script
Load Balancer Monitoring
Load Balancer Monitoring
Best Practices
✅ DO
Implement health checks
Use connection pooling
Enable session persistence when needed
Monitor load balancer metrics
Implement rate limiting
Use multiple availability zones
Enable SSL/TLS termination
Implement graceful connection draining
❌ DON'T
Allow single point of failure
Skip health check configuration
Mix HTTP and HTTPS without redirect
Ignore backend server limits
Over-provision without monitoring
Cache sensitive responses
Use default security groups
Neglect backup load balancers
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