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1---
2id: unleash_context
3title: Unleash Context
4---
5
6To standardise a few activation strategies, we also needed to standardise the Unleash context, which contains fields that vary per request, required to implement the activation strategies.
7
8The unleash context is defined by these fields:
9
10- userId: String,
11- sessionId: String,
12- remoteAddress: String,
13- properties: Map<String, String>
14
15All fields are optional, but if they are not set you will not be able to use certain activation strategies.
16
17E.g., the `userWithId` strategy obviously depends on the `userId` field.
18
19The `properties` field is more generic and can be used to provide more abritary data to strategies. Typical usage is to add more metadata. For instance, the `betaUser` strategy may read a field from `properties` to check whether the current user is a beta user.