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Load Balancing

Load Balancing Advanced (LBA)

Build highly scalable systems that are not tied to the performance limits of a particular server with Cloudn Load Balancing Advanced (LBA). Cloudn LBA effectively distributes high-volume web traffic across multiple virtual servers, and supports an Amazon AWS compatible API.

Load Balancing
Automatic Scale-Out
LBA Functions
Rich API

Cloudn LBA balances the load of web application traffic flowing from the Internet to the virtual server. A host name is automatically issued to every generated LBA.

Cloudn LBA automatically scales in and out of each zone based on the application traffic load. This creates a very flexible system.

DNS round robin is used for traffic distribution across all zones.


Load Balancer


  • A load balancer is created in a specified zone and application traffic (HTTP and HTTPS) is distributed to the registered Cloudn virtual server.

Distribution Method

  • Fewest connections.

Health Check


  • A virtual server will be excluded from the load balancer distribution destination if its response is not normal.
  • Continuous health checks are performed. Excluded virtual servers will automatically be added to the load balancing destination when the response returns to normal.
  • Health check settings can be configured.

Distribution Method

  • HTTP/HTTPS protocol.
  • Health is judged based on the type of HTTP response (ex: 200 success response) on accessing a particular URL.
  • Set by user.


  • API


  • A host name is automatically issued to every generated LBA.
  • Health check intervals can be configured in seconds.
  • User interface is only available via API.

The Amazon AWS compatible API enables you to configure the load balancer to automatically launch in specific zones and control other settings.
See Related Resources for Cloudn LBA API guide.

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