tower
https://github.com/tower-rs/tower
Rust
async fn(Request) -> Result<Response, Error>
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- Issues
- balance/p2c: stale cached ready index after discovery removal can route requests to a different endpoint
- retry: `TpsBudget` over-allocates retries for fractional `retry_percent < 1.0`
- `TrackCompletionFuture` retains the load-tracking handle on `Err` until the future is dropped
- `Steer` built with zero services returns `poll_ready = Ready(Ok(()))` but `call` panics
- util: `CallAll::unordered()` can silently drop a buffered request after a partial poll
- buffer: `bound = 0` panics in `Buffer::new` / `Buffer::pair` (and via `BufferLayer::new`)
- hedge: zero `period` is accepted but panics on first `call` with divide-by-zero
- feat(circuit-breaker): add CircuitBreaker Tower middleware
- examples: add ServiceBuilder middleware composition example
- Add SetTaskLocal service + layer
- Docs
- Rust not yet supported