haproxy.cfg

# Simple HAProxy Configuration

# Global settings
global
    log stdout format raw daemon

# Default settings
defaults
    mode    http
    timeout connect 5000ms
    timeout client  50000ms
    timeout server  50000ms
    log global
    option httplog
    option dontlognull

# Frontend to accept incoming requests on port 80
frontend http-in
    bind *:80
    # Define ACLs to match request paths
    acl is_auth path_beg /api/auth
    acl is_discounts path_beg /api/discounts
    acl is_items path_beg /api/items
    acl is_root path_beg /

    # Use corresponding backend based on ACL
    use_backend auth-backend if is_auth
    use_backend discounts-backend if is_discounts
    use_backend items-backend if is_items
    use_backend frontend-backend if is_root

# Backend for the auth service
backend auth-backend
    server auth1 localhost:3001

# Backend for the discounts service
backend discounts-backend
    server discounts1 localhost:3002

# Backend for the items service
backend items-backend
    server items1 localhost:3003

# Backend for the frontend service
backend frontend-backend
    server frontend1 127.0.0.1:3000