provides a duplicate function call suppression
npm install node-singleflightprovides a duplicate function call suppression
If a duplicate comes in, the duplicate caller waits for the original to complete and receives the same results.
argument func may need to set up timeout in some ways, otherwise it may create too many listeners and cause memory leak
Yarn
``
yarn add node-singleflight
NPM
`
npm install node-singleflight --save
+ See do.test.js File
`js
const singleflight = require('node-singleflight')
async function example() {
let data = singleflight.Do('SomeKey', async () => {
let data = await doSomething()
let processed = processData(data)
return processed
})
return data
}
``