Product Features
Feature Comparison
| Product Features | Application Load Balancer ALB | Classic Load Balancer CLB | Description |
|---|---|---|---|
| Layer-4 Forwarding (TCP/UDP) | ✓ | ✓ | |
| Layer-7 Forwarding (HTTP/HTTPS) | ✓ | ✓ | |
| Load Balancing Algorithm | Round-Robin, Source IP Hash, Weighted Round-Robin, Least Connections, Primary Standby | Round-Robin, Source IP Hash, Consistent Hashing, Least Connections, Primary Standby | |
| Health Check | ✓ | ✓ | Conducts health checks on backend service nodes according to the rules, automatically isolates abnormal service nodes, and quickly switches the problem nodes once an issue is detected to ensure the availability of the service. |
| Session Keep | ✓ | ✓ | Supports session persistence, allowing users to forward their requests to the same backend service node. |
| Cross-Availability Zone Disaster Recovery | ✓ | ✓ | Supports binding backend service nodes of different availability zones to achieve cross-availability zone disaster recovery. |
| Public Network Firewall | ✓ | — | Only supports request proxy type. |
| Domain Forwarding | ✓ | ✓ | Supports forwarding traffic to different backend nodes based on the access domain and URL. |
| Certificate Management | ✓ | ✓ | Supports HTTPS certificate management. |
| SSL Offloading | ✓ | ✓ | Supports HTTPS SSL Offloading. |
| WebSocket | ✓ | ✓ | |
| IPv6 Address Support | ✓ | — | Only supports request proxy type in some regions. |
| Mounting Hybrid Cloud Nodes | ✓ | ✓ | Only supports request proxy type. |
| Log Function | ✓ | ✓ | Only supports request proxy type. |
| HTTP/2 | ✓ | ✓ | HTTPS supports HTTP/2. |
| Redirection | - | - | Supports redirection from HTTP to HTTPS. |
| Data Compression | - | - | HTTP/HTTPS protocol supports enabling data compression. |
| Security Policy | - | - | HTTPS protocol supports the configuration of TLS protocol versions and cipher suites. |
| Bidirectional Authentication | — | — | Does not currently support HTTPS bidirectional authentication. |