What is the purpose of storing JSON data as a string within another JSON object?

Screenshot of developer tools

While exploring the local storage on my visit to YouTube, I came across some very peculiar-looking JSON data.

{
    creation: 1638112285935,
    data: "{\"quality\":1080,\"previousQuality\":360}",
    expiration: 1669216285935,
}

Why is there JSON data nested inside a string within another JSON object? What could be the purpose behind storing it in this way? Am I overlooking something significant here?

Any insights would be greatly appreciated. Thanks!

Answer №1

It's possible that the reason for this is because the data is stored in MySQL. In MySQL, you are unable to store data as type "json". To store JSON in MySQL, you must set the datatype to "TEXT" and use JSON.stringify() on the JSON before storing it in MySQL. I hope my explanation is clear despite my limited English proficiency.

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