I want to delete a document after a specified amount of time. Like if the user selects 24 hours then it should be auto-deleted after 24 hours. I heard about TTL in mongo but in that, I have to specify a time in the schema and it will be the same for all documents.

Is there any way to dynamically set the expiration time for every document?

CodePudding user response：

There is no system to support this per se, one suggestion is that you add a Date attribute to each document you want to delete and maintain a job that checks documents that have this attribute/if the attribute value has passed the current time, if so, delete the document.

CodePudding user response：

We can add a field like expireAt and it will contain the Date of expiration. Now add a TTL index like this-

db.dbname.createIndex({expireAt:1},{expireAfterSeconds:0})

Now just add expireAt field in every document with the expiration Date. It will auto-remove when the current time reaches the expiration date.