Module resilient 

ResilientClient — an async-native HTTP transport.

One client per remote API. Concurrency is bounded by a semaphore; retry, auth refresh, a rate limit and a circuit breaker are inline middleware. Cancellation is structural: drop the future and the in-flight request goes with it.

The pieces live in one file each: builder assembles a client, attempt runs one call’s attempt loop, breaker is the circuit breaker, rate the token bucket, policy the retry knobs, and auth, error and observer the types those exchange.

Structs

CallPolicy

The policy for one call.

ClientError

ResilientClient

A cheap-to-clone resilient HTTP client. Build via ResilientClient::builder.

ResilientClientBuilder

Builder for ResilientClient.

RetryPolicy

Bounded retry: exponential from base_backoff (doubling per attempt), capped at max_backoff, with jitter added before each sleep.

Enums

BreakerMode

What an attempt does while the circuit breaker is open.

BreakerState

What a ResilientClient’s breaker is doing right now, for consumers that poll instead of tracking TransportEvents.

ErrorKind

RetryMode

How many times, and how long apart, a failed attempt is repeated.

TransportEvent

Traits

TransportObserver

Type Aliases

AuthFuture

Future returned by the auth token refresher.

AuthRefresher

Acquire (or re-acquire) an auth token — called lazily and on 401.