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
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