Class Subsetting (0.11.0) 

Subsetting(mapping=None, *, ignore_unknown_fields=False, **kwargs)

Subsetting configuration for this BackendService. Currently this is applicable only for Internal TCP/UDP load balancing, Internal HTTP(S) load balancing and Traffic Director.

.. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields

Attributes
Name Description
policy str
Check the Policy enum for the list of possible values. This field is a member of oneof_ _policy.
subset_size int
The number of backends per backend group assigned to each proxy instance or each service mesh client. An input parameter to the CONSISTENT_HASH_SUBSETTING algorithm. Can only be set if policy is set to CONSISTENT_HASH_SUBSETTING. Can only be set if load balancing scheme is INTERNAL_MANAGED or INTERNAL_SELF_MANAGED. subset_size is optional for Internal HTTP(S) load balancing and required for Traffic Director. If you do not provide this value, Cloud Load Balancing will calculate it dynamically to optimize the number of proxies/clients visible to each backend and vice versa. Must be greater than 0. If subset_size is larger than the number of backends/endpoints, then subsetting is disabled. This field is a member of oneof_ _subset_size.

Classes

Policy

Policy(value)
 
    For Traffic Director, the number of backends per backend
    group (the subset size) is based on the `subset_size`
    parameter.

    For Internal HTTP(S) load balancing, the number of backends
    per backend group (the subset size) is dynamically adjusted
    in two cases:

    - As the number of proxy instances participating in Internal
      HTTP(S) load balancing increases, the subset size
      decreases.
    - When the total number of backends in a network exceeds the
      capacity of a single proxy instance, subset sizes are
      reduced automatically for each service that has backend
      subsetting enabled.
NONE (2402104):
    No Subsetting.

    Clients may open connections and send traffic to
    all backends of this backend service. This can
    lead to performance issues if there is
    substantial imbalance in the count of clients
    and backends.