Struct Idempotency 

pub struct Idempotency { /* private fields */ }

Implementations

impl Idempotency

pub fn new(cache: &CacheStore) -> Self

Remember answers for 24 hours, which is Stripe’s window and long enough for any retry policy a client would plausibly run.

pub fn with_driver(store: Arc<dyn Cache>) -> Self

pub fn header(self, name: &str) -> Self

Read the key from a different header.

pub fn remember_for(self, ttl: Duration) -> Self

How long an answer is remembered.

pub fn scope_by( self, scope: impl Fn(&Request) -> String + Send + Sync + 'static, ) -> Self

Decide whose key it is — a user id from the auth middleware, a tenant.

pub fn required(self) -> Self

Refuse a write that carries no key, with a 400 that says so.

Off by default, because most endpoints are fine without one. On for a payments API, where a client that forgets the header has a bug that should be found in development rather than in the ledger.

Trait Implementations

impl Clone for Idempotency

fn clone(&self) -> Idempotency

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Middleware for Idempotency

fn handle(&self, request: Request, next: Next) -> BoxFuture<Response>