mirror of
https://github.com/Unleash/unleash.git
synced 2024-12-22 19:07:54 +01:00
53 lines
2.3 KiB
Markdown
53 lines
2.3 KiB
Markdown
---
|
|
id: toggle_variants
|
|
title: Feature Toggle Variants
|
|
---
|
|
|
|
> This feature was introduced in _Unleash v3.2.0_.
|
|
|
|
Do you want to facilitate more advanced experimentations? Do you want to use Unleash to handle your A/B experiments? Say hello to feature toggle variants!
|
|
|
|
You can now extend feature toggles with multiple variants. This feature enables you to extend a feature toggle to divide your traffic among a set of variants.
|
|
|
|
|
|
|
|
#### How does it work?
|
|
|
|
Unleash will first use activation strategies to decide whether a feature toggle is considered enabled or disabled for the current user.
|
|
|
|
If the toggle is considered **enabled**, the Unleash client will select the correct variant for the request. Unleash clients will use values from the Unleash context to make the allocation predictable. `UserId` is the preferred value, then `sessionId` and `remoteAdr`. If no context data is provided, the traffic will be spread randomly for each request.
|
|
|
|
If the toggle is considered **disabled** you will get the built-in `disabled` variant.
|
|
|
|
A json represntation of the empty variant will be the following:
|
|
|
|
```json
|
|
{
|
|
"name": "disabled",
|
|
"enabled": false
|
|
}
|
|
```
|
|
|
|
The actual representation of the built-in the client SDK will vary slighty, to honor best pratices in various languages.
|
|
|
|
> If you change the number of variants, it will affect variant allocations. This means that some of the users will be moved to the next variant.
|
|
|
|
_Java SDK example:_
|
|
|
|
```java
|
|
Variant variant = unleash.getVariant("toggle.name", unleashContext);
|
|
System.out.println(variant.getName());
|
|
```
|
|
|
|
#### Client SDK Support
|
|
|
|
To make use of toggle variants, you need to use a compatible client. Client SDK with variant support:
|
|
|
|
- [unleash-client-node](https://github.com/Unleash/unleash-client-node) (from v3.2.0)
|
|
- [unleash-client-java](https://github.com/Unleash/unleash-client-java) (from v3.2.0)
|
|
- [unleash-client-ruby](https://github.com/Unleash/unleash-client-ruby) (from v0.1.6)
|
|
- [unleash-client-python](https://github.com/Unleash/unleash-client-python) (from v3.3.0)
|
|
- [unleash-client-dotnet](https://github.com/Unleash/unleash-client-dotnet) (from v1.3.6)
|
|
|
|
If you would like to give feedback on this feature, experience issues or have questions, please feel free to open an issue on [GitHub](https://github.com/Unleash/unleash/).
|