API gateway built for hybrid and multi-cloud, optimized for microservices and distributed architectures
Kong Gateway is a lightweight, fast, and flexible cloud-native API
gateway. An API gateway is a reverse proxy that lets you manage, configure, and route
requests to your APIs.
Kong Gateway runs in front of any RESTful API and can be extended through
modules and plugins. It’s designed to run on decentralized architectures, including
hybrid-cloud and multi-cloud deployments.
With Kong Gateway, users can:
- Leverage workflow automation and modern GitOps practices
- Decentralize applications/services and transition to microservices
- Create a thriving API developer ecosystem
- Proactively identify API-related anomalies and threats
- Secure and govern APIs/services, and improve API visibility across the
Extending the Kong Gateway
Kong Gateway is a Lua application running in Nginx. Kong Gateway
is distributed along with OpenResty, which is a bundle
of modules that extend the lua-nginx-module.
This sets the foundations for a modular architecture, where
plugins can be enabled and executed at runtime. At its core,
Kong Gateway implements database abstraction, routing, and plugin
management. Plugins can live in separate code bases and be injected anywhere
into the request lifecycle, all with a few lines of code.
Kong provides many plugins for you to use in your
Gateway deployments. You can also create your own custom plugins. For more
information, see the
plugin development guide,
the PDK reference, and the guide on
creating plugins with other languages.
Packages and modes
Kong Gateway is available in the following modes:
Kong Gateway (OSS): an open-source package containing the basic API gateway
functionality and open-source plugins. You can manage the open-source Gateway
with Kong’s Admin API or with declarative configuration.
Kong Gateway (available in
Free, Plus, or Enterprise modes): Kong’s API gateway
with added functionality.
- In Free mode,
this package adds Kong Manager to the basic open-source functionality.
- In Plus mode, you have access to more
Kong Gateway features, but only through Konnect Cloud.
See the Konnect Cloud documentation and the
Plus-labelled plugins on the Plugin Hub for more information.
- With an Enterprise subscription,
it also includes:
You can manage Kong Gateway in Free or Enterprise mode with Kong’s
Admin API, declarative configuration, or Kong Manager.
This package is also available as part of
Figure 1: Diagram of Kong Gateway modules and how they relate to the
foundational Gateway components.
Requests flow from an API client into the
Gateway, are modified and managed by the proxy based on your Gateway
configuration, and forwarded to upstream services.
Kong Admin API
Kong Admin API provides a RESTful
interface for administration and configuration of Services, Routes, Plugins, and
Consumers. All of the tasks you can perform against the Gateway can be automated
using the Kong Admin API.
Note: If you are running Kong in traditional mode, increased traffic could
lead to potential performance with Kong Proxy.
Server-side sorting and filtering large quantities of entities will also cause increased CPU usage in both Kong CP and database.
Kong Manager is
the graphical user interface (GUI) for Kong Gateway. It uses the Kong
Admin API under the hood to administer and control Kong Gateway.
Here are some of the things you can do with Kong Manager:
- Create new Routes and Services
- Activate or deactivate plugins with a couple of clicks
- Group your teams, services, plugins, consumer management, and everything else
exactly how you want them
- Monitor performance: visualize cluster-wide, workspace-level, or
object-level health using intuitive, customizable dashboards
Kong Dev Portal
Kong Dev Portal is used to onboard new developers and to generate API documentation, create custom pages, manage API versions, and secure developer access.
Kong Vitals provides useful metrics about the health and performance of your Kong Gateway nodes, as well as metrics about the usage of your proxied APIs. You can visually monitor vital signs and pinpoint anomalies in real-time, and use visual API analytics to see exactly how your APIs and Gateway are performing and access key statistics. Kong Vitals is part of the Kong Manager UI.
Kong Gateway can run natively on Kubernetes with its custom ingress controller, Helm chart, and Operator. A Kubernetes ingress controller is a proxy that exposes Kubernetes services from applications (for example, Deployments, ReplicaSets) running on a Kubernetes cluster to client applications running outside of the cluster. The intent of an ingress controller is to provide a single point of control for all incoming traffic into the Kubernetes cluster.
Kong Gateway plugins
Kong Gateway plugins provide advanced functionality to better manage your API and microservices. With turnkey capabilities to meet the most challenging use cases, Kong Gateway plugins ensure maximum control and minimizes unnecessary overhead. Enable features like authentication, rate-limiting, and transformations by enabling Kong Gateway plugins through Kong Manager or the Admin API.
Kong also provides API lifecycle management tools that you can use with Kong Gateway.
Insomnia enables spec-first development for all REST and GraphQL services. With Insomnia, organizations can accelerate design and test workflows using automated testing, direct Git sync, and inspection of all response types. Teams of all sizes can use Insomnia to increase development velocity, reduce deployment risk, and increase collaboration.
decK helps manage Kong Gateway’s configuration in a declarative fashion.
This means that a developer can define the desired state of Kong Gateway or
Konnect – services, routes, plugins, and more – and let decK handle
implementation without needing to execute each step manually, as you would with
the Kong Admin API.
Get started with Kong Gateway
Download and install Kong Gateway.
To test it out, you can choose either the open-source package, or
run Kong Gateway in free mode and also try out Kong Manager.
After installation, get started with one of our introductory guides:
- Quickstart: An introduction to
Kong Gateway, common objects, and basic Admin API commands.
- Getting started guide:
The complete Kong Gateway
getting started guide provides in-depth examples, explanations, and step-by-step
instructions, and explores Kong’s many available tools for managing the gateway.
Try in Konnect
Kong Konnect can manage Kong Gateway
instances. With this setup, Kong hosts the control plane and you host your
own data planes.
There are a few ways to test out the Gateway’s Plus or Enterprise features:
Kong primarily follows a semantic versioning (SemVer)
model for its products.
For the latest version support information for Kong Gateway and
Kong Mesh, see our version support policy.