<!--
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You 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
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
-->

[Chinese](README_CN.md)
## APISIX

[![Build Status](https://travis-ci.org/apache/apisix.svg?branch=master)](https://travis-ci.org/apache/apisix)
[![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://github.com/apache/apisix/blob/master/LICENSE)

- **QQ group**: 552030619
- Mail list: Mail to dev-subscribe@apisix.apache.org, follow the reply to subscribe the mail list.
- ![Twitter Follow](https://img.shields.io/twitter/follow/ApacheAPISIX?style=social)

## What's Apache APISIX?
Apache APISIX is a dynamic, real-time, high-performance API gateway, based on the Nginx library and etcd.

APISIX provides rich traffic management features such as load balancing, dynamic upstream, canary release, circuit breaking, authentication, observability, and more.

You can use Apache APISIX to handle traditional north-south traffic,
as well as east-west traffic between services.
It can also be used as a k8s ingress controller.

The technical architecture of Apache APISIX:

![](doc/images/apisix.png)

## Features
You can use Apache APISIX as a traffic entrance to process all business data, including dynamic routing, dynamic upstream, dynamic certificates,
A/B testing, canary release, blue-green deployment, limit rate, defense against malicious attacks, metrics, monitoring alarms, service observability, service governance, etc.

- **All platforms**
    - Cloud-Native: Platform agnostic, No vendor lock-in, APISIX can run from bare-metal to Kubernetes.
    - Run Environment: Both OpenResty and Tengine are supported.
    - Supports ARM64: Don't worry about the lock-in of the infra technology.

- **Multi protocols**
    - [TCP/UDP Proxy](doc/stream-proxy.md): Dynamic TCP/UDP proxy.
    - [Dynamic MQTT Proxy](doc/plugins/mqtt-proxy.md): Supports to load balance MQTT by `client_id`, both support MQTT [3.1.*](http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt-v3.1.1-os.html), [5.0](https://docs.oasis-open.org/mqtt/mqtt/v5.0/mqtt-v5.0.html).
    - [gRPC proxy](doc/grpc-proxy.md): Proxying gRPC traffic.
    - [gRPC transcoding](doc/plugins/grpc-transcode.md): Supports protocol transcoding so that clients can access your gRPC API by using HTTP/JSON.
    - Proxy Websocket
    - Proxy Protocol
    - Proxy Dubbo: Dubbo Proxy based on Tengine.
    - HTTP(S) Forward Proxy
    - [SSL](doc/https.md): Dynamically load an SSL certificate.

- **Full dynamic**
    - [Hot Updates And Hot Plugins](doc/plugins.md): Continuously updates its configurations and plugins without restarts!
    - [Proxy Rewrite](doc/plugins/proxy-rewrite.md): Support rewrite the `host`, `uri`, `schema`, `enable_websocket`, `headers` of the request before send to upstream.
    - [Response Rewrite](doc/plugins/response-rewrite.md): Set customized response status code, body and header to the client.
    - [Serverless](doc/plugins/serverless.md): Invoke functions in each phase in APISIX.
    - Dynamic Load Balancing: Round-robin load balancing with weight.
    - Hash-based Load Balancing: Load balance with consistent hashing sessions.
    - [Health Checks](doc/health-check.md): Enable health check on the upstream node, and will automatically filter unhealthy nodes during load balancing to ensure system stability.
    - Circuit-Breaker: Intelligent tracking of unhealthy upstream services.
    - [Proxy Mirror](doc/plugins/proxy-mirror.md): Provides the ability to mirror client requests.

- **Fine-grained routing**
    - [Supports full path matching and prefix matching](doc/router-radixtree.md#how-to-use-libradixtree-in-apisix)
    - [Support all Nginx built-in variables as conditions for routing](/doc/router-radixtree.md#how-to-filter-route-by-nginx-builtin-variable), so you can use `cookie`,` args`, etc. as routing conditions to implement canary release, A/B testing, etc.
    - Support [various operators as judgment conditions for routing](https://github.com/iresty/lua-resty-radixtree#operator-list), for example `{"arg_age", ">", 24}`
    - Support [custom route matching function](https://github.com/iresty/lua-resty-radixtree/blob/master/t/filter-fun.t#L10)
    - IPv6: Use IPv6 to match route.
    - Support [TTL](doc/admin-api.md#route)
    - [Support priority](doc/router-radixtree.md#3-match-priority)
    - [Support Batch Http Requests](doc/plugins/batch-requests.md)

- **Security**
    - Authentications: [key-auth](doc/plugins/key-auth.md), [JWT](doc/plugins/jwt-auth.md), [basic-auth](doc/plugins/basic-auth.md), [wolf-rbac](doc/plugins/wolf-rbac.md)
    - [IP Whitelist/Blacklist](doc/plugins/ip-restriction.md)
    - [IdP](doc/plugins/oauth.md): Support external authentication services, such as Auth0, okta, etc., users can use this to connect to OAuth 2.0 and other authentication methods.
    - [Limit-req](doc/plugins/limit-req.md)
    - [Limit-count](doc/plugins/limit-count.md)
    - [Limit-concurrency](doc/plugins/limit-conn.md)
    - Anti-ReDoS(Regular expression Denial of Service): Built-in policies to Anti ReDoS without configuration.
    - [CORS](doc/plugins/cors.md) Enable CORS(Cross-origin resource sharing) for your API.
    - [uri-blocker](doc/plugins/uri-blocker.md): Block client request by URI.
    - [Request Validator](doc/plugins/request-validation.md)

- **OPS friendly**
    - OpenTracing: support [Apache Skywalking](doc/plugins/skywalking.md) and [Zipkin](doc/plugins/zipkin.md)
    - works with external service discovery：In addition to the built-in etcd, it also supports `Consul` and `Nacos` [DNS discovery mode](https://github.com/apache/apisix/issues/1731#issuecomment-646392129), and [Eureka](doc/discovery.md)
    - Monitoring And Metrics: [Prometheus](doc/plugins/prometheus.md)
    - Clustering: APISIX nodes are stateless, creates clustering of the configuration center, please refer to [etcd Clustering Guide](https://github.com/etcd-io/etcd/blob/master/Documentation/op-guide/clustering.md).
    - High availability: support to configure multiple etcd addresses in the same cluster.
    - Dashboard: Built-in dashboard to control APISIX.
    - Version Control: Supports rollbacks of operations.
    - CLI: start\stop\reload APISIX through the command line.
    - [Stand-alone mode](doc/stand-alone.md): Supports to load route rules from local yaml file, it is more friendly such as under the kubernetes(k8s).
    - [Global Rule](doc/architecture-design.md#Global-Rule): Allows to run any plugin for all request, eg: limit rate, IP filter etc.
    - High performance: The single-core QPS reaches 18k with an average delay of less than 0.2 milliseconds.
    - [Fault Injection](doc/plugins/fault-injection.md)
    - [REST Admin API](doc/admin-api.md): Using the REST Admin API to control Apache APISIX, which only allows 127.0.0.1 access by default, you can modify the `allow_admin` field in `conf/config.yaml` to specify a list of IPs that are allowed to call the Admin API. Also note that the Admin API uses key auth to verify the identity of the caller. **The `admin_key` field in `conf/config.yaml` needs to be modified before deployment to ensure security**.
    - External Loggers: Export access logs to external log management tools. ([HTTP Logger](doc/plugins/http-logger.md), [TCP Logger](doc/plugins/tcp-logger.md), [Kafka Logger](doc/plugins/kafka-logger.md), [UDP Logger](doc/plugins/udp-logger.md))

- **Highly scalable**
    - [Custom plugins](doc/plugin-develop.md): Allows hooking of common phases, such as `rewrite`, `access`, `header filer`, `body filter` and `log`, also allows to hook the `balancer` stage.
    - Custom load balancing algorithms: You can use custom load balancing algorithms during the `balancer` phase.
    - Custom routing: Support users to implement routing algorithms themselves.

## Configure and Installation

APISIX Installed and tested in the following systems:

CentOS 7, Ubuntu 16.04, Ubuntu 18.04, Debian 9, Debian 10, macOS, **ARM64** Ubuntu 18.04

There are several ways to install the Apache Release version of APISIX:
1. Source code compilation (applicable to all systems)
    - Installation runtime dependencies: OpenResty and etcd, and compilation dependencies: luarocks. Refer to [install dependencies documentation](doc/install-dependencies.md)
    - Download the latest source code release package:
        ```shell
        wget http://www.apache.org/dist/apisix/1.5/apache-apisix-1.5-src.tar.gz
        tar zxvf apache-apisix-1.5-src.tar.gz
        ```
    - Install the dependencies：
        ```shell
        cd apache-apisix-1.5
        make deps
        ```
    - check version of APISIX:
        ```shell
        ./bin/apisix version
        ```
    - start APISIX (Please make sure that etcd is started and enabled the v2 protocol):
        ```shell
        ./bin/apisix start
        ```
2. [Docker image](https://hub.docker.com/r/apache/apisix) （applicable to all systems）

    By default, the latest Apache release package will be pulled:

    ```shell
    docker pull apache/apisix
    ```

    The Docker image does not include `etcd`, you can refer to [docker compose example](https://github.com/apache/apisix-docker/tree/master/example) to start a test cluster.

3. RPM package（only for CentOS 7）
    - Installation runtime dependencies: OpenResty and etcd, refer to [install dependencies documentation](doc/install-dependencies.md#centos-7)
    - install APISIX：
    ```shell
    sudo yum install -y https://github.com/apache/apisix/releases/download/1.5/apisix-1.5-0.el7.noarch.rpm
    ```
    - check version of APISIX:
        ```shell
        apisix version
        ```
    - start APISIX (Please make sure that etcd is started and enabled the v2 protocol):
        ```shell
        apisix start
        ```

**Note**: Apache APISIX does not yet support the v3 protocol of etcd, so you need to enable v2 protocol when starting etcd.
We are doing support for etcd v3 protocol.
```shell
etcd --enable-v2=true &
```

## For Developer

1. For developers, you can use the latest master branch to experience more features

    - build from source code
    ```shell
    git clone git@github.com:apache/apisix.git
    cd apisix
    make deps
    ```

   - Docker image
    ```shell
    git clone https://github.com/apache/apisix-docker.git
    cd apisix-docker
    sudo docker build -f alpine-dev/Dockerfile .
    ```


2. Getting start

    The getting started guide is a great way to learn the basics of APISIX, just follow the steps in [Getting Started](doc/getting-started.md).

     Further, you can follow the documentation to try more [plugins](doc/README.md#Plugins).

3. Admin API

    Apache APISIX provides [REST Admin API](doc/admin-api.md) to dynamic control the Apache APISIX cluster.

4. Plugin development

    You can refer to [plugin development guide](doc/plugin-develop.md), and [sample plugin `echo`](doc/plugins/echo.md) documentation and code implementation.

     Please note that Apache APISIX plugins' added, updated, deleted, etc. are hot loaded, without restarting the service.

For more documents, please refer to [Apache APISIX Document Index](doc/README.md)

## Dashboard
APISIX has built-in support for Dashboard,

The dashboard only allows 127.0.0.1 by default, and you can modify `allow_admin` in `conf/config.yaml` by yourself, to list the list of IPs allowed to access.

## Benchmark

Using AWS's 8 core server, APISIX's QPS reach to 140,000 with a latency of only 0.2 ms.

[benckmark script](benchmark/run.sh), [test method and process](https://gist.github.com/membphis/137db97a4bf64d3653aa42f3e016bd01) has been open source, welcome to try and contribute.

## Document
[Document Indexing for Apache APISIX](doc/README.md)

## Apache APISIX vs Kong

#### Both of them have been covered core features of API gateway

| **Features**   | **Apache APISIX**   | **KONG**   |
|:----|:----|:----|
| **Dynamic upstream**  | Yes   | Yes   |
| **Dynamic router**  | Yes   | Yes   |
| **Health check**  | Yes   | Yes   |
| **Dynamic SSL**  | Yes   | Yes   |
| **L4 and L7 proxy**  | Yes   | Yes   |
| **Opentracing**  | Yes   | Yes   |
| **Custom plugin**  | Yes   | Yes   |
| **REST API**  | Yes   | Yes   |
| **CLI**  | Yes   | Yes   |

#### The advantages of Apache APISIX

| **Features**   | **Apache APISIX**   | **Kong**   |
|:----|:----|:----|
| Belongs to   | Apache Software Foundation   | Kong Inc.   |
| Tech Architecture | Nginx + etcd   | Nginx + postgres   |
| Communication channels  | Mail list, Wechat group, QQ group, Github, meetup   | Github, freenode, forum |
| Single-core CPU, QPS(enable limit-count and prometheus plugins)   | 18000   | 1700   |
|  Latency | 0.2 ms   | 2 ms   |
| Dubbo   | Yes   | No   |
| Configuration rollback   | Yes   | No   |
| Route with TTL   | Yes   | No   |
| Plug-in hot loading   | Yes   | No   |
| Custom LB and route   | Yes   | No   |
| REST API <--> gRPC transcoding   | Yes   | No   |
| Tengine   | Yes   | No   |
| MQTT    | Yes   | No   |
| Configuration effective time   | Event driven, < 1ms   | polling, 5 seconds   |
| Dashboard   | Yes   | No   |
| IdP   | Yes   | No   |
| Configuration Center HA   | Yes   | No   |
| Speed limit for a specified time window   | Yes   | No   |
| Support any Nginx variable as routing condition  | Yes   | No   |

Benchmark comparison test [details data](https://gist.github.com/membphis/137db97a4bf64d3653aa42f3e016bd01)

## Videos And Articles
- [APISIX technology selection, testing and continuous integration](https://medium.com/@ming_wen/apache-apisixs-technology-selection-testing-and-continuous-integration-313221b02542)
- [Analysis of Excellent Performance of Apache APISIX Microservices Gateway](https://medium.com/@ming_wen/analysis-of-excellent-performance-of-apache-apisix-microservices-gateway-fc77db4090b5)

## User Stories
- [ke.com: How to Build a Gateway Based on Apache APISIX(Chinese)](https://mp.weixin.qq.com/s/yZl9MWPyF1-gOyCp8plflA)
- [360: Apache APISIX Practice in OPS Platform(Chinese)](https://mp.weixin.qq.com/s/zHF_vlMaPOSoiNvqw60tVw)
- [HelloTalk: Exploring Globalization Based on OpenResty and Apache APISIX(Chinese)](https://www.upyun.com/opentalk/447.html)
- [Tencent Cloud: Why choose Apache APISIX to implement the k8s ingress controller?(Chinese)](https://www.upyun.com/opentalk/448.html)
- [aispeech: Why we create a new k8s ingress controller?(Chinese)](https://mp.weixin.qq.com/s/bmm2ibk2V7-XYneLo9XAPQ)

## Who Uses APISIX?
A wide variety of companies and organizations use APISIX for research, production and commercial product, including:

<img src="https://raw.githubusercontent.com/api7/website-of-API7/master/user-wall.jpg" width="900" height="500">

Users are encouraged to add themselves to the [Powered By](doc/powered-by.md) page.

## Landscape
<p align="left">
<img src="https://landscape.cncf.io/images/left-logo.svg" width="150">&nbsp;&nbsp;<img src="https://landscape.cncf.io/images/right-logo.svg" width="200">
<br/><br/>
APISIX enriches the <a href="https://landscape.cncf.io/category=api-gateway&format=card-mode&grouping=category">
CNCF API Gateway Landscape.</a>
</p>

## Contributing

See [CONTRIBUTING](Contributing.md) for details on submitting patches and the contribution workflow.

## Acknowledgments

Inspired by Kong and Orange.