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@kitten-team/koa-cache-proxy

Proxy middleware for koa

  • 1.0.3
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  • npm
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koa-cache-proxy

这个项目 fork 自koa-proxy,在保留原有 api 的基础上拓展了其他功能,原始 api 参考原文档,下文只描述改动的部分

安装

npm install koa-cache-proxy -S

新特性

  •  使用 async/await 代替 generate,不再支持低版本 koa2 和 node
  • 增加 hook 功能对某些自定义 url 做响应
  • 增加 cache 功能,可将反向代理的资源缓存在内存中,减少反向代理的次数

用例

  • hook 功能
const proxy = require('koa-cache-proxy')
...
app.use(
  proxy({
    host: 'https://alicdn.com',
    match: /^\/example(\/)?/,
    hooks: [
      {
        path: '/example/LfkFyA2UCcsn8NIr', //随便起的一个url
        handle(ctx) {
          // do something
        },
      },
    ],
 })
)
...

使用 hook 功能, hook 中定义的链接只会在 match 匹配的前提下生效

  • cache 功能
const proxy = require('koa-cache-proxy')
...
app.use(
  proxy({
    host: 'https://alicdn.com',
    match: /^\/example(\/)?/,
    cache: true //缓存所有,
    // cache: /\.html$/ 缓存所有html结尾文件
    // cache(path) { return false } 动态决定是否缓存
 })
)
...

cache 缓存时会连同 response header 也一并缓存

新增属性

使用此插件,在 koa 的 ctx 中将新增以下属性

  • ctx.isCacheable

ctx.path 是否符合缓存规则

LICENSE

Licensed under the MIT license.

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Package last updated on 10 Sep 2018

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