# updateCacheEggServer

**Repository Path**: vesper0407/update-cache-egg-server

## Basic Information

- **Project Name**: updateCacheEggServer
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 2
- **Forks**: 0
- **Created**: 2021-12-09
- **Last Updated**: 2023-11-11

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# updateCache
a dedicated task for updating edge cache resources

### environment
- Linux (CentOS macOS Ubuntu ...)
- 不要在windows上部署 用了很多Linux shell命令

### 关于wget timeout参数
- [timeout不是用来控制下载时间](https://blog.csdn.net/zhuxinquan61/article/details/89221735)

### eggjs支持https
- 暂不支持在config.default.js中配置cluster
- [github issues](https://github.com/eggjs/egg/issues/1344)
- 解决办法
  1. 获取证书
    ```shell
    mkdir ssl
    cd ssl
    openssl genrsa -out server.key 1024
    openssl req -new -key server.key -out server.csr
    openssl x509 -req -in server.csr -signkey server.key -out server.crt
    ```
  2. package.json中scripts新增devs 支持https
     ```json
      {
      "scripts":{
                "devs": "egg-bin dev --port=5002 --https.key='./ssl/server.key' --https.cert='./ssl/server.crt'"
                }
      }
      ```
  3. npm run devs
- http服务器的话就直接 ```npm run dev```
- wget测试服务器之间的网速 -q安静模式 -O指定文件位置 --timeout指定超时重试
    ```shell
    drj_MacBook:~ apple$ time wget http://162.14.105.224:8080/panorama/skiing/face2/video/vp09/4/seg-10.m4s -O /dev/null --timeout 1 -q
                    real	0m5.159s
                    user	0m0.010s
                    sys	    0m0.024s
    ```
- nethogs监控
  - 监控可以 但是用来主动获取有点问题 
    要知道真实的传输速率最好传了才知道 获取的空闲速率很低

## QuickStart

<!-- add docs here for user -->

see [egg docs][egg] for more detail.

### Development

```bash
$ npm i
$ npm run dev
$ open http://localhost:5001/

$ npm run devs
$ open https://localhost:5002/
```

### Deploy

```bash
$ npm start
$ npm stop
```

### npm scripts

- Use `npm run lint` to check code style.
- Use `npm test` to run unit test.
- Use `npm run autod` to auto detect dependencies upgrade, see [autod](https://www.npmjs.com/package/autod) for more detail.


[egg]: https://eggjs.org


### 超时了 node.js ClusterClientNoResponseError
- nodejs.ClusterClientNoResponseError: client no response in 72172ms exceeding maxIdleTime 60000ms, maybe the connection is close on other side.
- 生产版本不会出现这个问题，是正常的现象。
- 看到这个报错不要手动quit 程序还在运行
- node_modules/cluster-client/lib/leader.js:71
- 调整maxIdleTime
- heartbeatInterval and responseTimeout
  ```javascript
    //定义在 node_modules/cluster-client/lib/index.js
    const defaultOptions = {
    port: parseInt(process.env.NODE_CLUSTER_CLIENT_PORT || 7777),
    singleMode: process.env.NODE_CLUSTER_CLIENT_SINGLE_MODE === '1',
    maxWaitTime: 30000,
    responseTimeout: 3000,
    heartbeatInterval: 20000,
    autoGenerate: true,
    isBroadcast: true,
    logger,
    transcode,
    formatKey,
    };
  ```
### wget https
```shell
Last login: Thu Jan 27 14:01:10 on ttys010
drj_MacBook:~ apple$ ssh root@81.70.14.129
Last login: Thu Jan 27 14:01:10 2022 from 115.60.29.146
[root@VM-0-15-centos ~]# wget https://162.14.105.224:8080/panorama/skiing/face2/video/vp09/4/seg-10.m4s -O /dev/null
--2022-01-27 14:02:56--  https://162.14.105.224:8080/panorama/skiing/face2/video/vp09/4/seg-10.m4s
正在连接 162.14.105.224:8080... 已连接
错误: 无法验证 162.14.105.224 的由 "/C=XX/L=Default City/O=Default Company Ltd/CN=162.14.105.224" 颁发的证书:
  出现了自己签名的证书
要以不安全的方式连接至 162.14.105.224 使用"--no-check-certificate"
[root@VM-0-15-centos ~]# wget https://162.14.105.224:8080/panorama/skiing/face2/video/vp09/4/seg-10.m4s -O /dev/null --no-check-certificate
--2022-01-27 14:03:06--  https://162.14.105.224:8080/panorama/skiing/face2/video/vp09/4/seg-10.m4s
正在连接 162.14.105.224:8080... 已连接
警告: 无法验证 162.14.105.224 的由 "/C=XX/L=Default City/O=Default Company Ltd/CN=162.14.105.224" 颁发的证书:
  出现了自己签名的证书
已发出 HTTP 请求 正在等待回应... 200 OK
长度 1328923 (1.3M) [application/octet-stream]
正在保存至: "/dev/null"

100%[================================================>] 1,328,923   1011KB/s 用时 1.3s   

2022-01-27 14:03:07 (1011 KB/s) - 已保存 "/dev/null" [1328923/1328923])
```