With Oracle Cloud Infrastructure Load Balancing Classic, you can distribute incoming traffic across multiple Oracle Cloud Infrastructure Compute Classic instances running your applications in the Oracle Public Cloud. In this way, Oracle Cloud Infrastructure Load Balancing Classic provides similar features commonly available in a dedicated hardware load balancer or a separately managed instance of Oracle Traffic Director.
You create a load balancer from the Oracle Cloud Infrastructure Compute Classic console and then associate a pool of Compute instances with each load balancer. If a Compute instance is unavailable or unreachable, the load balancer automatically reroutes the traffic to the remaining compute instances in the server pool. When a Compute instance becomes available and is reachable again, the load balancer resumes routing traffic to that instance.
Additional Compute instances can be added or removed from the server pool as the request load changes, without disrupting the overall access to the application.
The overhead of encrypting and decrypting HTTPS traffic can be offloaded to the load balancer so that Compute instances can focus on their main work.
Note:You need to first create a load balancer on an IP network before you can use PaaS Service Manager (PSM) to associate pools of PaaS instances or IaaS Compute instances with each load balancer.