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The local resolver is a small application, provided as a Docker container, that resolves flags locally in your network for improved performance.

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How It Works

The local resolver provides the same API as Confidence’s remote resolvers. It fetches all rules and flags from Confidence and stores them locally. When a request comes in, the local resolver can resolve the flag locally without having to make a request to Confidence. This approach offers faster response times for backend services, which is important for providing users a great experience.

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SDK Configuration

The SDKs (except for mobile SDKs) have an option for redirecting flag resolution to the local resolver. For example, with the JavaScript SDK: 
const confidence = Confidence.create({
  clientSecret: '<flags-client-secret>',
  resolveBaseUrl: 'http://localhost:8090',
  ...
});
The local resolver is typically available at http://localhost:8090 when running as a sidecar.

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Sticky Assignments with a Local Resolver

If you want to use sticky assignments with a local resolver, you need access to a low latency key-value storage that can store mappings between entity IDs and variants. Reach out to Confidence support for more information!

Set Up Local Resolver

Step-by-step setup guide

Data Transfer

Understand data flow options

Clients Reference

Configure client authentication

SDKs Reference

SDK configuration options