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 2025-03-24 UTC."],[[["The page documents different versions of `ConnectionPersistenceOnUnhealthyBackends` within the `Google.Cloud.Compute.V1` namespace, ranging from version 1.0.0 to the latest version 3.6.0."],["`ConnectionPersistenceOnUnhealthyBackends` is an enum that specifies how connections are handled when backends become unhealthy, and the default behavior depends on the protocol in use."],["There are three distinct options available within the `ConnectionPersistenceOnUnhealthyBackends` enum: `AlwaysPersist`, `DefaultForProtocol`, and `NeverPersist`, as well as `UndefinedConnectionPersistenceOnUnhealthyBackends` which indicates that the enum is not set."],["The latest version 3.6.0 of `ConnectionPersistenceOnUnhealthyBackends` is available under the `Google.Cloud.Compute.V1` namespace, along with previous versions and links to each one."],["Connection persistence behavior varies based on whether the tracking mode is PER_CONNECTION or if the session affinity is configured for 5-tuple, along with the selected option for `ConnectionPersistenceOnUnhealthyBackends`."]]],[]]
