- Is there a way to get the last modified time for a collection?
- Can we get the last modified time for documents in collection?
Hi @Harinder_Singh1, welcome to the community.
There’s no in-built way(API) that provides the last modified time for a collection or a document.
However, from the top of my head I can think of the following 3 ways to get the last modified time of the collection:
- Checkout Auditing which allows administrators to track system activity for deployments with multiple users. Auditing is available on Enterprise Advanced as well as on Atlas(not available for
M0
free clusters,M2
, andM5
clusters). - You can also utilize Change Streams, which returns a change event notification document, with information on the operation and the changes it made when a change occurs on a watched collection/database.
- Create a dedicated collection to track the last modified changes across different collections with the schema that looks something like this:
{
collection: <-name of the collection you are tracking->,
last_updated: <-update this field every time you update the collection->
}
To track a document’s last updated time, you can consider adding a new field such as updatedAt
which can contain the timestamp of the time it was updated at.
An example document would look like this:
{
...existing fields and values in the document... ,
updatedAt: ISODate("2022-05-18T14:10:30Z")
}
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