Load balancing policies
Extendable load balancing policies could be configured for each cluster by load balancer policy. And the developer can implement a custom load balancing policy and configured it.
See built-in load balancing policies by APIs.
Enum based load balancing policies will be suupported for backward compatibility and marked as deprecated. The new extendable load balancing policies should be used as a priority if the related policies are implemented.
Use random load balancing policy as an example:
name: example_cluster type: STRICT_DNS connect_timeout: 0.25s load_assignment: cluster_name: example_cluster endpoints: - lb_endpoints: - endpoint: address: socket_address: address: example.com port_value: 80 load_balancing_policy: policies: - typed_extension_config: name: envoy.load_balancing_policies.random typed_config: "@type": type.googleapis.com/envoy.extensions.load_balancing_policies.random.v3.Random