Enum BackendKind 

#[non_exhaustive]
pub enum BackendKind {
    Valkey,
    Postgres,
}

RFC-017 Stage A: backend family selector. Default Valkey. At Stage E4 (v0.8.0) both Valkey and Postgres are first-class and boot without a dev-override; BACKEND_STAGE_READY remains in ff-server::server as defence-in-depth for future backend additions.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Valkey

Valkey / FCALL backend (production path through v0.7.x).

Postgres

Postgres backend. First-class since v0.8.0 (RFC-017 Stage E4).

Implementations

impl BackendKind

pub fn as_str(&self) -> &'static str

Stable &'static str label matching the backend’s backend_label() for metrics dimensioning.

Trait Implementations

impl Clone for BackendKind

fn clone(&self) -> BackendKind

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BackendKind

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for BackendKind

fn default() -> BackendKind

Returns the “default value” for a type.

impl PartialEq for BackendKind

fn eq(&self, other: &BackendKind) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for BackendKind

impl Eq for BackendKind

impl StructuralPartialEq for BackendKind