---
title: kIOWriteThruCache
framework: IOKit
role: symbol
role_heading: Global Variable
platforms: [iOS 18.4+, iPadOS 18.4+, Mac Catalyst 13.0+, macOS 10.0+, visionOS 2.4+]
path: iokit/kiowritethrucache
---

# kIOWriteThruCache

## Declaration

```swift
var kIOWriteThruCache: Int { get }
```