The revised document now exceeds 16,777,216 in size

When attempting to add new data to an array using mongoose, I encountered two errors. Here is the code snippet in question:

return await db.fileMeta.findOneAndUpdate({
    username: username,
    'files.fileUID': {
        $ne: data.fileUID
    }
}, {
    $addToSet: {
        files: data
    }
}).exec();

The JavaScript object data contains 25 items totaling 789 bytes, far below the 16MB limit. However, my previously working code started throwing the following error recently:

MongoError: BSONObj size: 16829075 (0x100CA93) is invalid. Size must be between 0 and 16793600(16MB) First element: $v: 1
    at MessageStream.messageHandler (/home/user/projects/web-app/node_modules/mongoose/node_modules/mongodb/lib/cmap/connection.js:268:20)
    ...

After resolving the above error, I encountered another one:

MongoError: Resulting document after update is larger than 16777216
    at MessageStream.messageHandler (/home/user/projects/web-app/node_modules/mongoose/node_modules/mongodb/lib/cmap/connection.js:268:20)
    ...

Inspecting MongoDB Compass revealed a total size of 16.2MB. While this matches the limit set by the error, it is puzzling since the data object is significantly smaller. How do I address this issue effectively?

https://i.sstatic.net/Q5mAV.png

javascriptmongodbmongoosemongoose-schema

Answer №1

Following the suggestion from @Evert, I decided to restructure my database by storing each file's metadata as its own separate document rather than as an array within a larger document. This change has significantly improved the functionality of my system.

const newFileMetadata = new db.FileMetadata(data);

const savedData = await newFileMetadata.save();
//Success

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