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    A full featured and free API Gateway in Node JS

    Why do I need an API Gateway?

    An API gateway provides a single, unified entry point across one or more internal APIs. It is an important element in any microservice architecture.


    Why Tree Gateway?

    Tree Gateway is a free and open source solution writen in Node JS that has a complete and customizable pipeline to handle your requests. It provides:

    • Authentication: More than 480 strategies available through an easy passportjs integration, including support to JWT tokens, Oauth, Basic and many others.
    • A flexible and robust Routing system that allows any kind of customized request pipeline.
    • Rate limits - To control quotas for your customers and to define actions to be taken when any quota is exceeded.
    • Caching system - Allow you to easily inject and control caching behavior for your APIs. Tree Gateway provides two kinds of cache:
      • At browser level - Intercepting the responses and controling how the HTTP cache headers are used.
      • At a server level - Caching responses for your APIs in memory (using the redis database).
    • Easy Service Discovery, using your preffered registry.
    • Integrated CircuitBreaker - A fast circuitbreaker to fast fail your responses when your API is having problems to work. It support custom handlers for events like "open" or "close" circuit.
    • Real Time Monitoring and Analytics -
      • Collect statistics about any access to your APIs. Capture any event, like a cache hit on a cache entrance, a circuitbreaker open circuit or an authentication attempt.
      • A very flexible and powerfull log system, that can be integrated with any service like logstash, timescale, loggly or new relic.
    • Easy Administration - The gateway can be configured remotelly. And no restart is needed. Any API configuration can be "hot" changed and all configurations are propagated to other tree-gateway cluster nodes with no pain. The gateway can be configured through:
      • Admin API - A REST API that can be invoked through HTTP;
      • SDK - A Node JS SDK that can be used to configure the Gateway (or a cluster of gateways) programmatically;
      • CLI - A command line tool can be used to configure using shell commands or scripts.
    • Focused on Performance and High Availability - Turn easy the creation of big clusters.
      • Support clusters of redis to share configurations, circuitbreaker states, cached content and so on.
      • Automatically propagate events to all cluster nodes.
      • Auto discovery for cluster nodes.
      • Very low resources footprint.
    • Everything can be extended or customized using only Javascript. All plugins can be written in pure Javascript.

    Watch the Quickstart video

    Quick Start

    Install the gateway:

    npm install -g tree-gateway

    Run it:


    Then map your first API. Just create an YML file (my-api.yaml):

    name: Test
    version: 1.0.0
    path: "/test"
      timeout: five seconds

    And use the Tree Gateway CLI to configure it into the gateway:

    treeGatewayConfig apis --add ./my-api.yaml

    And its done. You can test it accessing in your browser: http://localhost:8000/test/get

    Gateway Configuration Reference

    Check the Docs.

    Migrating from previous versions

    Check our migration guide.


    npm i tree-gateway

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    • trbustamante