---
title: Rust SDK 0.11.0
summary: null
url: https://www.fastly.com/documentation/reference/changes/2024/10/rust-sdk-0.11.0
---

- New HTTP caching APIs, including `set_cache_key`, `set_before_send`, and
  `set_after_send` on `Request`. These allow for deep customization of caching
  behavior. The `set_after_send` method in particular sets up a callback to be
  invoked after receiving a backend response, but before caching it -- allowing
  cache configuration to be driven by the response data, and for the response to
  be modified prior to caching.
- As part of that new caching API, caching hews a bit closer to the HTTP spec.
  Where previously a response containing the string `private` or `no-store`
  _anywhere_ in the relevant cache control header would not be cached, the new
  API looks for `private` and `no-store` as standalone entries in the header,
  which is the more typical behavior. The previous behavior can be emulated by
  using the new `set_after_send` hook.
- Refactored internals to reduce unnecessary copying. This required one minor
  public API change, to `Request::get_url_mut`, which now returns a smart
  pointer rather than a direct `&mut` reference.
- `inspect` and related types have been been moved from the `experimental`
  module to `security`
- KV store API overhaul, which includes new builder-style APIs with a much
  richer set of options
- Further improvements for lazily loading and cloning HTTP headers