Nested JSON: How Deep Is Too Deep?
Nested JSON: how to structure hierarchical data, when deep nesting becomes a problem, and flattening strategies for APIs and databases.
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Tags: json, developer-tools, beginner
Nested JSON: How Deep Is Too Deep? JSON lets you put objects inside objects and arrays inside arrays. This is called nesting, and it's one of the most useful features of the format. But nesting can also become a problem — structures that are too deep are hard to read, hard to debug, and sometimes slow to process. This guide shows how nesting works, what realistic nested JSON looks like, and where to draw the line. --- What Is Nesting? Nesting means one JSON value contains another. An object can have a property whose value is another object. An array can contain objects. Those objects can contain arrays. There is no technical limit to how deep you can go. Here is a simple nested example — one level deep: The top-level object has one property, , whose value is another object. That inner…
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