mongoose-trigger | Mongoose plugin to automatically emit needed events | Pub Sub library

I have a nodeJS server which maintains a MongoDB and a client which sends a post request with a buildName variable in JSON.

What I am trying to do is setup an event listener that is triggered when the mongoDB document with a field matching the buildName sent by the client is updated or created. Multiple clients can be listening and must be notified if a document containing the same buildName that they pass in is updated or created.

I have tried to do polling with this method where my client just sat in a while loop and constantly asked if there was an update, however, I ran into performance issues so I switched to event listeners.

I tried a few different ways of setting up a callback when my client sends its post request which gets called whenever a document is updated and then sends that updated mongodb doc as a res.json. One of the ones I am using is mongoose-trigger npm module which allows me to setup event listeners for both creates and updates.

I also looked on here for possible solutions which brought me to mongoose-trigger for getting events triggered on creates and updates, but still could not find an answer that satisfied using this triggering to fire off a response to a post request.

Here is a snippet of the code for creating the triggering event object: