Is there a way for Node.js to listen to a change in a particular data in a collection of MongoDB, and fire an event if a change happens?
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Is there a way for Node.js to listen to a change in a particular data in a collection of MongoDB, and fire an event if a change happens?
MongoDB apparently now supports triggers and watch, this answer is outdated.
[Original] I believe you are looking for a database trigger.
Unfortunately, MongoDB has no support for them yet, so I don’t think you can listen for changes directly from the database. You’ll need to setup some sort of notification system (e.g. pub/sub) that alerts interested parties when a collection has changed.