Get the number of read/write tickets available to the WiredTiger storage engine.
Read/Write tickets represent the number of concurrent read/write operations allowed into the storage engine.
When this value reaches zero new read/write requests may queue until a read/write ticket becomes available.
Read more on MongoDB
$ npm install --save wiredtiger-tickets
var wrTickets = ;
Give it a mongodb URI
MIT © Nikolay Spiridonov