SDKs

Flipswitch provides official SDKs with real-time SSE support for instant flag updates. These wrap the standard OFREP protocol with automatic cache invalidation when flags change.

Official SDKs

JavaScript/TypeScript

React, Node.js, and browser applications

Java

Spring Boot and server-side Java

Why Use Official SDKs?

Feature	Official SDK	Standard OFREP
Real-time updates (SSE)	Yes	No
Automatic cache invalidation	Yes	Manual
Reconnection with backoff	Yes	Manual
Event handlers	Yes	No

Using Standard OFREP Providers

If you don't need real-time updates, you can use any standard OpenFeature OFREP provider:

// Standard OFREP provider (polling only, no SSE)
import { OFREPWebProvider } from '@openfeature/ofrep-web-provider';
 
const provider = new OFREPWebProvider({
  baseUrl: 'https://api.flipswitch.dev',
  headers: { 'X-API-Key': 'YOUR_API_KEY' }
});

Supported Languages

Any OpenFeature SDK with OFREP support works with Flipswitch:

JavaScript/TypeScript - Web and server
Java - Server-side
Go - Server-side
.NET - Server and client
Python - Server-side
PHP - Server-side
Ruby - Server-side

See the OpenFeature ecosystem for all available providers.

SDK Configuration

All SDKs share common configuration options:

Option	Description	Default
`apiKey`	Environment API key from dashboard	Required
`baseUrl`	Flipswitch server URL	`https://api.flipswitch.dev`
`enableRealtime`	Enable SSE for live updates	`true`
`pollingInterval`	Cache TTL in milliseconds	`30000`

SDKs Overview