https://github.com/wangdahoo/resource-pool

https://github.com/wangdahoo/resource-pool

Last synced: 2 months ago
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• Host: GitHub
• URL: https://github.com/wangdahoo/resource-pool
• Owner: wangdahoo
• Created: 2017-10-09T10:38:22.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2017-10-11T09:56:27.000Z (over 8 years ago)
• Last Synced: 2025-05-29T01:58:56.689Z (about 1 year ago)
• Language: JavaScript
• Size: 8.79 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# Resource-Pool

> Resource Pooling.

### Install

```bash

$ npm install resource-pool

```

### How to Use

```js

/* 以创建 mongodb 连接池为例 */

const Pool = require('resource-pool')

const MongoClient = require('mongodb').MongoClient

const MONGO_URI = 'mongodb://localhost:27017/some-mongodb'

function createConnection () {

  return new Promise((resolve) => {

    MongoClient.connect(MONGO_URI, (err, db) => {

      if (err) throw err

      resolve(db)

    })

  })

}

function closeConnection (db) {

  db.close()

}

const pool = new Pool({

  create: createConnection,

  destroy: closeConnection

})

pool.acquire().then(({r, release}) => { // get resource from pool

  // r is the resource instance, and it is the `db` boject here for mongodb

  let col = r.collection('articles')

  col.insert({

    title: '从今天开始',

    description: '关心粮食和素材。我有一所房子，面朝大海，春暖花开。'

  })

  // return to pool

  release()

})

```