Is there a more efficient way to handle post data without increasing its size when encoding JSON within a URI

I have a significant amount of data to post, and it needs to be minimized for performance reasons.

Initially, my data consists of JavaScript objects which I then convert to JSON format before sending it via POST request.

The issue is that my data includes numerous objects (lists []) and dictionaries ({}) along with short text enclosed in quotes ("") by the JSON formatting.

Subsequently, when the data is sent, all brackets ([{), curly braces ({}), and quotes ("") are URI encoded by the browser. This results in a significant increase in string length.

For example, running the following comparison shows that the URI encoded string is 50% larger:

 alert(JSON.stringify(myStuff).length);
    alert(encodeURI(JSON.stringify(myStuff)).length);

This expansion can become quite problematic, especially with large initial strings. It seems that while JSON is a standard format, this downside affects efficiency. Are there any alternatives to using JSON in this case? Or am I overlooking something here? Is URI encoding always necessary for data transmission?

javascriptjson

Answer №1

Is data always required to be sent as URI encoded?

Not necessarily. It actually depends on the content type you are using for sending it.

If you opt for the x-www-form-urlencoded content-type, then yes, you need to encode the data. However, if you choose multipart/form-data, encoding is not necessary. This topic has been discussed in more detail in this post. When dealing with a substantial amount of data, it may be more beneficial to avoid x-www-form-urlencoded.

Switching the content type alone isn't enough; you also have to include the appropriate mime boundaries. It appears that using multipart/form-data would be a more efficient approach for your situation. According to http://www.w3.org/TR/html401/interact/forms.html#h-17.13.4:

The content type "application/x-www-form-urlencoded" is inefficient for sending large quantities of binary data or text containing non-ASCII characters. The content type "multipart/form-data" should be used for submitting forms that contain files, non-ASCII data, and binary data.

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