node-singleflight

node-singleflight

provides a duplicate function call suppression

If a duplicate comes in, the duplicate caller waits for the original to complete and receives the same results.

Notice

argument func may need to set up timeout in some ways, otherwise it may create too many listeners and cause memory leak

Install

Yarn

yarn add node-singleflight

NPM

npm install node-singleflight --save

Usage

• See do.test.js File

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
}