# Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
## [Unreleased]
## [1.1.1](https://github.com/aws/aws-lambda-rust-runtime/compare/lambda_runtime_api_client-v1.1.0...lambda_runtime_api_client-v1.1.1) - 2026-09-02
### Other
- release ([#1151](https://github.com/aws/aws-lambda-rust-runtime/pull/1151))
## [1.1.0](https://github.com/aws/aws-lambda-rust-runtime/compare/lambda_runtime_api_client-v1.0.3...lambda_runtime_api_client-v1.1.0) - 2026-07-09
### Added
- add SnapStart support via SnapStartResource trait ([#1150](https://github.com/aws/aws-lambda-rust-runtime/pull/1150))
### Added
- `PooledClient`: a Runtime API client that can rebuild its connection pool after a
SnapStart VM restore via `reset_pool()`, so stale connections to the Runtime API
(RAPID) are discarded. Implemented lock-free with `OnceLock`; `call()` has no
hot-path lock. Construct via `PooledClient::builder().build()`.
- `PooledClientBuilder`, returned by `PooledClient::builder()`.
- `RuntimeApiClient` trait abstracting `call`, implemented by both `Client` and
`PooledClient`.
### Deprecated
- `Client` and `ClientBuilder::build` are superseded by `PooledClient` /
`PooledClient::builder().build()`. `Client` is unchanged and fully functional; it
simply cannot reset its connection pool after a SnapStart restore. They are
documented as superseded but do **not** carry a `#[deprecated]` attribute, so no
compiler warnings are emitted; they are expected to be removed in the next major
version (2.0.0). This keeps the crate non-breaking (no major version bump).
## [1.0.3](https://github.com/aws/aws-lambda-rust-runtime/compare/lambda_runtime_api_client-v1.0.2...lambda_runtime_api_client-v1.0.3) - 2026-03-19
### Other
- release ([#1118](https://github.com/aws/aws-lambda-rust-runtime/pull/1118))
## [1.0.2](https://github.com/aws/aws-lambda-rust-runtime/compare/v1.0.2...lambda_runtime_api_client-v1.0.2) - 2026-01-06
### Added
- *(lambda-managed-instances)* API client connection pooling for concurrent requests ([#1067](https://github.com/aws/aws-lambda-rust-runtime/pull/1067))
### Changed
- MSRV updated from 1.82.0 to 1.84.0, enabled MSRV-aware resolver ([#1078](https://github.com/aws/aws-lambda-rust-runtime/pull/1078))