Reference documentation and code samples for the Compute Engine v1 API enum BackendServiceConnectionTrackingPolicy.Types.ConnectionPersistenceOnUnhealthyBackends.
Specifies connection persistence when backends are unhealthy. The default value is DEFAULT_FOR_PROTOCOL. If set to DEFAULT_FOR_PROTOCOL, the existing connections persist on unhealthy backends only for connection-oriented protocols (TCP and SCTP) and only if the Tracking Mode is PER_CONNECTION (default tracking mode) or the Session Affinity is configured for 5-tuple. They do not persist for UDP. If set to NEVER_PERSIST, after a backend becomes unhealthy, the existing connections on the unhealthy backend are never persisted on the unhealthy backend. They are always diverted to newly selected healthy backends (unless all backends are unhealthy). If set to ALWAYS_PERSIST, existing connections always persist on unhealthy backends regardless of protocol and session affinity. It is generally not recommended to use this mode overriding the default. For more details, see Connection Persistence for Network Load Balancing and Connection Persistence for Internal TCP/UDP Load Balancing.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-04-01 UTC."],[[["This page provides documentation for the `ConnectionPersistenceOnUnhealthyBackends` enum within the Google Cloud Compute Engine v1 API, specifically in the `Google.Cloud.Compute.V1` namespace."],["The latest version documented is 3.6.0, with a wide range of previous versions also listed, going as low as 1.0.0 for users who are not using the newest version."],["The `ConnectionPersistenceOnUnhealthyBackends` enum specifies how connections are handled when backends become unhealthy, with options including `DEFAULT_FOR_PROTOCOL`, `NEVER_PERSIST`, and `ALWAYS_PERSIST`."],["The documentation details the behavior of each persistence option in the `ConnectionPersistenceOnUnhealthyBackends` enum, covering protocol types and tracking modes, as well as session affinity."],["The documentation provides additional links for users to access more information regarding connection persistence, such as Network Load Balancing and Internal TCP/UDP Load Balancing, within Google Cloud documentation."]]],[]]
