---
title: Rust SDK 0.8.7
summary: null
url: https://www.fastly.com/documentation/reference/changes/2022/08/rust-sdk-0.8.7
---

## Added

- Added `Backend::is_healthy()` to `experimental` module
- Added `get_client_h2_fingerprint` to `Request` and `client_h2_fingerprint` to `RequestHandle` to get the HTTP/2 fingerprint of a client request if available
- Added an interface to the [Compute Object Store][object-store-blog].
- Added interfaces to issue [surrogate key purges][purge-docs].

[object-store-blog]: https://www.fastly.com/blog/introducing-the-compute-edge-object-store-global-persistent-storage-for-compute-functions

[purge-docs]: /guides/concepts/edge-state/cache/purging/

## Changed

- Improved deprecation messages for renaming of `Dictionary` to `ConfigStore`
- Fixed some misspellings.