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Short Description
Kong, with PredictHQ modifications
Full Description

API Gateway & Microservice Management

Kong is a scalable, open source API Layer (also known as an API Gateway, or
API Middleware)
. Kong was originally built at Mashape to
secure, manage and extend over
15,000 Microservices
for its API Marketplace, which generates billions of requests per month.

Backed by the battle-tested NGINX with a focus on high performance, Kong
was made available as an open-source platform in 2015. Under active
development, Kong is now used in production at hundreds of organizations from
startups, to large enterprises and government departments including: The New
York Times, Expedia,, The Guardian, Condè Nast and The
University of Auckland.

Website |
Docs |
Installation |
Blog |
Mailing List |
Gitter Chat |
freenode: #kong



  • CLI: Control your Kong cluster from the command line just like Neo in The
  • REST API: Kong can be operated with its RESTful API for maximum
  • Geo-Replicated: Configs are always up-to-date across different regions.
  • Failure Detection & Recovery: Kong is unaffected if one of your Cassandra
    nodes goes down.
  • Cluster Awareness: All Kongs auto-join the cluster keeping config updated
    across nodes.
  • Scalability: Distributed by nature, Kong scales horizontally simply by
    adding nodes.
  • Performance: Kong handles load with ease by scaling and using NGINX at
    the core.
  • Developer Portal: With
    Gelato integration,
    build beautiful portals for easy developer on-boarding.
  • Plugins: Extendable architecture for adding functionality to Kong and APIs.
    • OAuth2.0: Add easily an OAuth2.0 authentication to your APIs.
    • Logging: Log requests and responses to your system over HTTP, TCP, UDP or to disk.
    • JWT: Verify and authenticate JSON Web Tokens.
    • HMAC: Add HMAC Authentication to your APIs.
    • ACL: Acccess Control for your API Consumers.
    • IP-restriction: Whitelist or blacklist IPs that can make requests.
    • Response-Rate-Limiting: Rate limiting based on custom response header value.
    • API Analytics: Visualize, Inspect and Monitor API traffic with Galileo.
    • Loggly Integration: Push your traffic data through your Loggly account.
    • DataDog Integration: Easy Data monitoring through DataDog. DevOps will love it!
    • Runscope Integration: Test and Monitor your APIs.
    • Syslog: Logging to System log.
    • SSL: Setup a Specific SSL Certificate for an underlying service or API.
    • Monitoring: Live monitoring provides key load and performance server metrics.
    • Authentication: Manage consumer credentials query string and header tokens.
    • Rate-limiting: Block and throttle requests based on IP, authentication or body size.
    • Transformations: Add, remove or manipulate HTTP requests and responses.
    • CORS: Enable cross-origin requests to your APIs that would otherwise be blocked.
    • Anything: Need custom functionality? Extend Kong with your own Lua plugins!

For more info about plugins, you can check out the Plugin

Why Kong?

If you're building for web, mobile or IoT (Internet of Things) you will likely
end up needing common functionality on top of your actual software. Kong can
help by acting as a gateway for HTTP requests while providing logging,
authentication, rate-limiting and more through plugins.


We've load tested Kong and Cassandra on AWS; you can see our benchmark report


Kong comes in many shapes. While this repository contains its core's source
code, other repos are also under active development:

Community Resources and Tools




Here is a list of third-party tools maintained by the community:


You can find a detailed Roadmap of Kong on the Wiki.


If you are planning on developing on Kong, you'll need a development
installation. The next branch holds the latest unreleased source code.

You can read more about writing your own plugins in the Plugin Development
, or browse an
online version of Kong's source code documentation in the Public Lua API


You can use a Vagrant box running Kong and Postgres that you can find at

Source Install

Kong mostly is an OpenResty application made of Lua source files, but also
requires some additional third-party dependencies. We recommend installing
those by following the source install instructions at

Instead of following the second step (Install Kong), clone this repository
and install the latest Lua sources instead of the currently released ones:

$ git clone
$ cd kong/

# you might want to switch to the development branch. See
$ git checkout next

# install the Lua sources
$ luarocks make

Running for development

Check out the development section
of the default configuration file for properties to tweak in order to ease
the development process for Kong.

Modifying the lua_package_path
and lua_package_cpath
directives will allow Kong to find your custom plugin's source code wherever it
might be in your system.


Install the development dependencies (busted, luacheck) with:

$ make dev

Kong relies on three test suites using the busted testing library:

  • Unit tests
  • Integration tests, which require Postgres and Cassandra to be up and running
  • Plugins tests, which require Postgres to be running

The first can simply be run after installing busted and running:

$ make test

However, the integration and plugins tests will spawn a Kong instance and
perform their tests against it. As so, consult/edit the spec/kong_tests.conf
configuration file to make your test instance point to your Postgres/Cassandra
servers, depending on your needs.

You can run the integration tests (assuming both Postgres and Cassandra are
running and configured according to spec/kong_tests.conf) with:

$ make test-integration

And the plugins tests with:

$ make test-plugins

Finally, all suites can be run at once by simply using:

$ make test-all

Consult the script for a more advanced example
usage of the tests suites and the Makefile.

Finally, a very useful tool in Lua development (as with many other dynamic
languages) is performing static linting of your code. You can use luacheck
(installed with make dev) for this:

$ make lint


When developing, you can use the Makefile for doing the following operations:

Name Description
install Install the Kong luarock globally
dev Install development dependencies
lint Lint Lua files in kong/ and spec/
test Run the unit tests suite
test-integration Run the integration tests suite
test-plugins Run the plugins test suite
test-all Run all unit + integration tests at once

Enterprise Support & Demo

Learn more about Kong Priority Support,
Products, HA, Demo, Training, API Certifications and Professional Services.


Copyright 2016-2017 Mashape, Inc

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
See the License for the specific language governing permissions and
limitations under the License.
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