---
title: Rust SDK 0.5.0
summary: null
url: https://www.fastly.com/documentation/reference/changes/2020/10/rust-sdk-0.5.0
---

## Added

- Added `fastly::dictionary::Dictionary`, which allows programs to look up values in Fastly Edge Dictionaries.

- Added `set_pci` method to `fastly::request::RequestExt` and `pci` to `fastly::request::RequestBuilderExt`, which both prevent cached content subject to compliance rules from being written to non-volatile storage.

- Added `set_surrogate_key` to `fastly::request::RequestExt` and `surrogate_key` to `fastly::request::RequestBuilderExt`. These allow surrogate keys to be added to cached content so that content may be purged in groups.

- Added `fastly::geo::Continent::as_code()` for easy access to two-letter continent codes.

## Changed

- `fastly::request::RequestExt` now offers `cache_override` and `cache_override_mut` as accessors to a `Request`'s `CacheOverride` instead of the `get_` and `set_` pair.