CODEWITHSUNDEEP
node.jsmongodbmongoose
Ply_py
Ply_py

Reputation: 115

How Do I Know A Document With Expires Attribute Got Deleted?

I'm implementing some verification procedures in Node.js. I had each verification stored in my MongoDB by Mongoose, and set a expires attribute for it, so it will be deleted after some time. Like this

var verification = new Schema({
  // something else
  createdAt: {
    type: Date,
    expires: '1d',
    default: Date.now,
  },
});

But I want to know when that doc is deleted. So I can do something else, like deleting the docs related with that verification. I've tried using post() hooks,

verification.post('remove', function(){
  // do something else
};

But it seems this won't work, since it's on application level. The doc is deleted by MongoDB directly, so remove() won't be called.

Upvotes: 1

Views: 175

Answers (1)

Christian P
Christian P

Reputation: 12240

You can't know when the document will be deleted because MongoDB removes the expired documents in a background task. There is currently no way to check which documents were deleted.

If you really need this functionality, you can create a background job that will delete documents from your own collections every 60 seconds and then notify you which documents were deleted.

Upvotes: 2

Related Questions