> ## Documentation Index
> Fetch the complete documentation index at: https://developers.authlete.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Authlete 2.3 Release Notes - January 2026

##### Version Number : 2.3.43

# Overview

This minor update introduces changes for Authlete 2.3.
This new version was made available on January 29th (Thu).

# New Features & Improvements

## Cache control improvements

* Added logging improvements to existing redis cache backend
* Added new `cluster` and `standalone` caching backends which adds improvements such as adding retries, selective stale cache key deletion and not relying on flush along with using the latest jedis API

## AWS Cloud HSM support

Added support for AWS cloud HSM.

# Specs support

N/A

# Bug fixes

## Client deletion timeout fix

Fixed an issue where attempting to delete a client with an important number of `granted_scopes` would result in a timeout and failure to delete.

## Cache hostname parsing fix

Fixed an issue where provided cache hostnames would be incorrectly parsed when using the newly implemented `cluster` backend.

## Cache unavailability fix

Fixed an issue where cache unavailability could potentially result in performance drops.

## UpgradeHandler synchronization fix

Fixed an issue where initializing the `UpgradeHandler` in different areas of the applications simultaneously would result in argument exception errors.

# Other

N/A