Help & DocumentationCloud Load BalancerProduct IntroductionApplication and Conventional CLB comparison
CLB offers two types of instances: CLB (formerly "application CLB") and classic CLB.
- Cloud Load Balancer: support TCP/UDP/HTTP/HTTPS Protocol, provide balance based on domain name and URL path, and support flexible repost.
- Traditional Cloud Load Balancer: private network does not support HTTP/HTTPS Protocol, and the configuration method is simple.
Cloud Load Balancer can cover all the functions of the traditional Cloud Load Balancer. From Features, product performance and other considerations, it is recommended that you use the instance type is Cloud Load Balancer. A detailed comparison of the two is as follows:
| Product Type | Cloud Load Balance | Classic Cloud Load Balancer | ||
|---|---|---|---|---|
| Public network | Private network | Public network | Private network | |
| Layer-7 repost (HTTP/HTTPS) | ✓ | ✓ | ✓ | × |
| Layer-4 repost (TCP / UDP) | ✓ | ✓ | ✓ | ✓ |
| Layer-4 encrypts repost (TCP SSL) | ✓ | × | × | × |
| Support for HTTP/2 and websocket (secure) | ✓ | ✓ | ✓ | × |
| Cloud Load Balancer's strategy | IP hash (Layer-7) Weighted polling Weighted Minimum Connections | IP hash (Layer-7) Weighted polling Weighted Minimum Connections | IP hash (Layer-7) Weighted polling Weighted Minimum Connections | WRR |
| Session hold | ✓ | ✓ | ✓ | ✓ |
| Health check | ✓ | ✓ | ✓ | ✓ |
| Customize repost rules (domain name / URL) | ✓ | ✓ | × | × |
| Support SNI multi-certificate feature | ✓ | ✓ | × | × |
| Repost to different back-end ports | ✓ | ✓ | × | × |
| Layer-7 personalized configuration | ✓ | ✓ | × | × |
| Layer-7 redirect function (rewrite) | ✓ | × | × | × |
| Support cross-region binding function | ✓ | × | × | × |
| Support Layer-7 log storage to COS | ✓ | × | ✓ | × |
