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title: Spike Control
collection: mulesoft
version: current
locale: en-us
portal_url: https://docs.salesforce.com/mulesoft/current/en-us/release-notes/policies/spike-control-release-notes.md
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product: Release Notes
version: master
keywords: mule, spike control, policy, release notes
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# Spike Control

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

## 1.2.3

**October 1, 2026**

### What’s New

- This release updates policy metadata only. There’s no functional change.

## 1.1.6

**October 27, 2023**

### Fixed issues

- Policy can now be applied alongside Rate Limiting.

## 1.2.1

**May 26, 2022**

### Fixed issues

- Fix policy schema not allowing additional properties via REST API.

## 1.2.0

**May 17, 2022**

### New Features and Enhancements

- First Flex compatible Policy.

- Separated Policy Definition from Policy Implementation. Stronger validations applied to a given
  policy configuration.

## 1.1.5

**Apr 30, 2020**

### Minimum Mule Version

**Mule 4.1.0**

### New Features and Enhancements

- Error handling responses revised for WSDL APIs to be compliant with SOAP 1.1 and 1.2.

- Performance improvements are introduced to the header manipulation engine.

### Fixed issues

- After a policy was applied, HTTP headers did not follow the RFC 2616 requirement of
  case-sensitivity:

  [https://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.2](https://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.2).

> [!NOTE] Because a critical issue was found in the last validation stage, the Spike Control policy
> v1.1.4 has been deprecated and removed from production.

## 1.1.3

**August, 2019**

### Minimum Mule Version

**4.1.0**

### New Features and Enhancements

- Several performance improvements are introduced in this release.

### Fixed Issues

- When using a SOAP proxy, an incorrect return code is passed.

## 1.1.2

**April 26, 2019**

### Minimum Mule Version

**4.1.0**

### New Features and Enhancements

- Several performance improvements are introduced in this release.

## 1.1.1

**March 16, 2018**

### Minimum Mule Version

**4.1.0**

### New Features and Enhancements

- Added the `violationCategory` parameter in the YAML configuration file for Feedback Loop.

### Fixed Issues

- The Rate Limiting policy is rejected from the scheduler during high network traffic.

## 1.1.0

**January 25, 2018**

### Minimum Mule Version

**4.1.0**

## See Also

- [Spike Control](https://docs.mulesoft.com/gateway/latest/policies-included-spike-control)

- [Known Issues](https://help.salesforce.com/s/issues)