# Datomic Cloud 454 and Ions release

**URL:** https://forum.datomic.com/t/datomic-cloud-454-and-ions-release/732
**Category:** Announcements
**Created:** [December 10, 2018, 9:45pm UTC](https://forum.datomic.com/t/datomic-cloud-454-and-ions-release/732 "2018-12-10T21:45:10Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![jaret](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.datomic.com/jaret/32/45_2.png) [@jaret](https://forum.datomic.com/u/jaret)
#### Post date: [December 10, 2018, 9:45pm UTC](https://forum.datomic.com/t/datomic-cloud-454-and-ions-release/732/1 "2018-12-10T21:45:10Z")

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This message covers changes in this release. For more details, see [http://docs.datomic.com/cloud/releases.html](http://docs.datomic.com/cloud/releases.html)

### 12/10/2018 - 454-8573 - Compute Template Update

The 454-8573 release contains a number of performance and availability enhancements:

- Enhancement: You can configure systems to [preload a database](https://docs.datomic.com/cloud/setting-up.html#details) before serving requests, eliminating a source of [unavailable anomalies](https://github.com/cognitect-labs/anomalies#the-categories).
- Enhancement: Ion deployments [load active databases before serving requests](https://docs.datomic.com/cloud/ions/ions-reference.html#deploy-outputs), eliminating a source of [unavailable anomalies](https://github.com/cognitect-labs/anomalies#the-categories).
- Enhancement: Improved throughput for transactions initiated by ion applications running the Production Topology.
- Enhancement: Improved performance for systems that create and delete many databases (e.g. test systems)
- Enhancement: Improvements to logging.

### 12/10/2018 - 0.9.186 - ion-dev && 0.9.28 - ion

- Enhancement: Increase CodeDeploy timeout to 5 minutes.
- Enhancement: Include doc strings for user facing functions in build artifact