About the method of Vue2 SSR caching Api data

This article mainly introduces Vue2 SSR cache Api data. The content is quite good. I will share it with you now and give it as a reference.

This article introduces the Vue2 SSR cache API data and shares it with everyone. The details are as follows:

1. Install cache dependency: lru-cache

npm install lru-cache --dev

2. api configuration file

config-server.js

var LRU = require('lru-cache')

let api
if (process.__API__) {
  api = process.__API__
} else {
  api = process.__API__ = {
    api: 'http://localhost:8080/api/',
    cached: LRU({
      max: 1000,
      maxAge: 1000 * 60 * 15
    }),
    cachedItem: {}
  }
}

module.exports = api

Configure lru-cache

3. Encapsulate the api

import axios from 'axios'
import qs from 'qs'
import md5 from 'md5'
import config from './config-server.js'

export default {
  post(url, data) {
    const key = md5(url + JSON.stringify(data))
    if (config.cached && config.cached.has(key)) {
      return Promise.resolve(config.cached.get(key))
    }
    return axios({
      method: 'post',
      url: config.api + url,
      data: qs.stringify(data),
      // 其他配置
    }).then(res => {
      if (config.cached && data.cache) config.cached.set(key, res)
      return res
    })
  }
}

We use axios for the ajax library, because axios can be used in nodejs and browsers

And encapsulate the node side and the browser side separately

import config from './config-server.js'

const key = md5(url + JSON.stringify(data))

Generate a through url and parameters The only key

if (config.cached && config.cached.has(key)) {
  return Promise.resolve(config.cached.get(key))
}

if (config.cached && data.cache) config.cached.set(key, res)

Determine whether the cache is enabled, and if the interface specifies cache, it will The data returned by the api is written to the cache

Note:

This api will handle all requests, but many requests do not actually need to be cached, so If you need to cache, you can add cache: true in the passed data, such as:

api.post('/api/test', {a: 1, b:2, cache: true})

If you don’t need caching, just pass the value as normal

Of course there are many ways to mark whether to cache, you don’t have to use this one

The above is the entire content of this article, I hope it will be helpful to everyone’s study , please pay attention to the PHP Chinese website for more related content!

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