Does SSLcat support load balancing?

Yes, SSLcat has powerful built-in load balancing features, supporting multiple load balancing algorithms and intelligent connection pool management.

Load Balancing Algorithms

SSLcat supports various load balancing algorithms:

• Round Robin - Distributes requests to backends in sequence
• Least Connections - Selects the backend with the fewest connections
• IP Hash - Selects a backend based on the client's IP hash
• Weighted Round Robin - Distributes requests based on weights

Basic Configuration

Configure multiple backend servers:

proxies:
  - domain: "app.example.com"
    targets:
      - "http://backend1.example.com:3000"
      - "http://backend2.example.com:3000"
      - "http://backend3.example.com:3000"
    protocol: "http"
    load_balance: "round_robin"

Weighted Load Balancing

Set weights for different backends:

proxies:
  - domain: "app.example.com"
    targets:
      - target: "http://backend1.example.com:3000"
        weight: 3
      - target: "http://backend2.example.com:3000"
        weight: 2
      - target: "http://backend3.example.com:3000"
        weight: 1
    protocol: "http"
    load_balance: "weighted_round_robin"

Health Checks

Configure backend health checks:

proxies:
  - domain: "app.example.com"
    targets:
      - "http://backend1.example.com:3000"
      - "http://backend2.example.com:3000"
      - "http://backend3.example.com:3000"
    protocol: "http"
    load_balance: "least_conn"
    health_check:
      enabled: true
      path: "/health"
      interval: 30
      timeout: 5
      retries: 3

Failover

Configure a failover mechanism:

proxies:
  - domain: "app.example.com"
    targets:
      - "http://primary.example.com:3000"
      - "http://backup1.example.com:3000"
      - "http://backup2.example.com:3000"
    protocol: "http"
    load_balance: "round_robin"
    failover:
      enabled: true
      max_failures: 3
      recovery_time: 60

Connection Pool Management

Intelligent connection pool configuration:

proxies:
  - domain: "app.example.com"
    targets:
      - "http://backend1.example.com:3000"
      - "http://backend2.example.com:3000"
    protocol: "http"
    load_balance: "round_robin"
    connection_pool:
      max_connections: 100
      max_idle_connections: 10
      idle_timeout: 90
      keep_alive: true

Session Persistence

Configure session persistence (sticky sessions):

proxies:
  - domain: "app.example.com"
    targets:
      - "http://backend1.example.com:3000"
      - "http://backend2.example.com:3000"
    protocol: "http"
    load_balance: "ip_hash"
    session_sticky:
      enabled: true
      cookie_name: "SSLCAT_SESSION"
      cookie_ttl: 3600

Monitoring and Statistics

Load balancing monitoring features:

• Backend Status - Displays the status of each backend
• Connection Statistics - Shows the distribution of connections
• Response Time - Displays the response time of each backend
• Error Rate - Shows the error rate of each backend

Best Practices

Recommendations for load balancing configuration:

• Enable Health Checks - Ensure the availability of backend services
• Set Weights Reasonably - Set weights according to backend performance
• Configure Failover - Improve service availability
• Monitor Performance - Continuously monitor the effectiveness of load balancing

With SSLcat's load balancing features, you can build a high-availability service architecture.