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Purging old data from a MongoDB collection to keep only a certain amount (not based on date)
In my application I'm using MongoDB to store user documents and the edit history (revisions) of these documents.
I use two collections for this: data and data_revisions. Each time a user makes a change in a document from the data collection, the original document is copied over to the data_revisions collection and a reference to the original item in the data collection is added.
I am looking for a "best practice" solution for keeping only a specific amount of "revisions" in the data_revisions collection and purge old values. I want to keep e.g. max 5 records (regardless the date they were created).
I could select the last 5 items, check the creation date of the oldest one and then delete everything older, but is there perhaps a more elegant way of doing this?
node.js mongodb mongoose
asked Jan 1 at 20:25
filo891filo891
9811
add a comment |
In my application I'm using MongoDB to store user documents and the edit history (revisions) of these documents.
I use two collections for this: data and data_revisions. Each time a user makes a change in a document from the data collection, the original document is copied over to the data_revisions collection and a reference to the original item in the data collection is added.
I am looking for a "best practice" solution for keeping only a specific amount of "revisions" in the data_revisions collection and purge old values. I want to keep e.g. max 5 records (regardless the date they were created).
I could select the last 5 items, check the creation date of the oldest one and then delete everything older, but is there perhaps a more elegant way of doing this?
node.js mongodb mongoose
asked Jan 1 at 20:25
filo891filo891
9811
add a comment |
In my application I'm using MongoDB to store user documents and the edit history (revisions) of these documents.
I use two collections for this: data and data_revisions. Each time a user makes a change in a document from the data collection, the original document is copied over to the data_revisions collection and a reference to the original item in the data collection is added.
I am looking for a "best practice" solution for keeping only a specific amount of "revisions" in the data_revisions collection and purge old values. I want to keep e.g. max 5 records (regardless the date they were created).
I could select the last 5 items, check the creation date of the oldest one and then delete everything older, but is there perhaps a more elegant way of doing this?
node.js mongodb mongoose
asked Jan 1 at 20:25
filo891filo891
9811
In my application I'm using MongoDB to store user documents and the edit history (revisions) of these documents.
I use two collections for this: data and data_revisions. Each time a user makes a change in a document from the data collection, the original document is copied over to the data_revisions collection and a reference to the original item in the data collection is added.
I am looking for a "best practice" solution for keeping only a specific amount of "revisions" in the data_revisions collection and purge old values. I want to keep e.g. max 5 records (regardless the date they were created).
I could select the last 5 items, check the creation date of the oldest one and then delete everything older, but is there perhaps a more elegant way of doing this?
node.js mongodb mongoose
node.js mongodb mongoose
asked Jan 1 at 20:25
filo891filo891
9811
asked Jan 1 at 20:25
filo891filo891
9811
asked Jan 1 at 20:25
filo891filo891
9811
asked Jan 1 at 20:25
filo891filo891
9811
asked Jan 1 at 20:25
filo891filo891
9811
9811
add a comment |
add a comment |
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