doc: Added FAQ about how to reload your own plugin (apache#1568)

Author: Miss-you

FAQ.md

@@ -172,3 +172,17 @@ Steps:
 2. Restart APISIX
 
 Now you can trace the info level log in logs/error.log.
+
+## How to reload your own plugin
+
+The Apache APISIX plugin supports hot reloading. If your APISIX node has the Admin API turned on, then for scenarios such as adding / deleting / modifying plugins, you can hot reload the plugin by calling the HTTP interface without restarting the service.
+
+```shell
+curl http://127.0.0.1:9080/apisix/admin/plugins/reload -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT
+```
+
+If your APISIX node does not open the Admin API, then you can manually load the plug-in by reloading APISIX.
+
+```shell
+apisix reload
+```

FAQ_CN.md

@@ -123,3 +123,17 @@ https://github.com/iresty/lua-resty-radixtree#operator-list
 2、重启APISIX
 
 之后便可以在logs/error.log中查看到info的日志了。
+
+## 如何加载自己编写的插件
+
+Apache APISIX 的插件支持热加载，如果你的 APISIX 节点打开了 Admin API，那么对于新增/删除/修改插件等场景，均可以通过调用 HTTP 接口的方式热加载插件，不需要重启服务。
+
+```shell
+curl http://127.0.0.1:9080/apisix/admin/plugins/reload -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT
+```
+
+如果你的 APISIX 节点并没有打开 Admin API，那么你可以通过手动 reload APISIX 的方式加载插件。
+
+```shell
+apisix reload
+```