doc: added power by page and user wall.

README.md

@@ -172,6 +172,14 @@ English Development Documentation: TODO
 
 - [APISIX high performance practice(Chinese)](https://www.upyun.com/opentalk/429.html)
 
+## Who Uses APISIX?
+A wide variety of companies and organizations use APISIX for research, production and commercial product.
+Here is the User Wall of APISIX.
+
+<img src="doc/images/user-wall.jpg" width="50%" height="50%">
+
+Users are encouraged to add themselves to the [Powered By](doc/powered-by.md) page.
+
 ## Landscape
 
 APISIX enriches the [CNCF API Gateway Landscape](https://landscape.cncf.io/category=api-gateway&format=card-mode&grouping=category):

README_CN.md

@@ -165,6 +165,13 @@ Dashboard 默认允许任何 IP 访问。你可以自行修改 `conf/config.yaml
 
 - [APISIX 高性能实践](https://www.upyun.com/opentalk/429.html)
 
+## APISIX 的用户有哪些？
+有很多公司和组织把 APISIX 用户学习、研究、生产环境和商业产品中。下面是 APISIX 的用户墙：
+
+<img src="doc/images/user-wall.jpg" width="50%" height="50%">
+
+欢迎用户把自己加入到 [Powered By](doc/powered-by.md) 页面。
+
 ## 全景图
 
 APISIX 被纳入 [云原生软件基金会 API 网关全景图](https://landscape.cncf.io/category=api-gateway&format=card-mode&grouping=category):

doc/powered-by.md

@@ -0,0 +1,29 @@
+# Powered by APISIX
+
+This page documents an **alphabetical list** of institutions that are using APISIX for research and production,
+or providing commercial products including APISIX.
+
+Users are encouraged to add themselves to this page, [issue](https://github.com/iresty/apisix/issues/487) and PR are welcomed.
+
+1. cunw 湖南新云网 http://www.cunw.com.cn/
+1. fansup.mobi https://fansup.mobi/
+1. ke.com 贝壳找房 https://www.ke.com/
+1. Meizu 魅族 https://www.meizu.com/
+1. sinovatech 炎黄新星 https://www.sinovatech.com
+1. souche 大搜车 https://www.souche.com/
+1. zuzuche 租租车 https://www.zuzuche.com/
+
+
+# User Cases
+
+## ke.com
+Using APISIX as traffic entry gateway
+
+## meizu
+Using APISIX as api gateway (limit, grpc transcode, abtest, dynamic configures ...)
+
+## zuzuche.com
+Using APISIX as a gateway, it uses the functions of current limiting, speed limiting, black-and-white list and so on. In the later stage, it also wants to add gRPC protocol, Serverless, custom plug-in, and other functions to meet business needs.
+
+## souche.com
+Using APISIX as a Web ACL gateway to deal with backend OA systems traffic.