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I´m building a web app that allows users to upload files < 5MB, and for this I´m using Request.ParseMultipartForm(5000000), but I´m wondering what happens if a funny guy tries to upload a file bigger than 5MB, documentation is not clear enough https://golang.org/pkg/net/http/#Request.ParseMultipartForm
The whole request body is parsed and up to a total of maxMemory bytes of its file parts are stored in memory, with the remainder stored on disk in temporary files
So, how long "temporary files" really means? because it´s a little ambiguous, does that mean that remaining file will be erase after the handler function returns? or does mean that has a lifetime determined? I wouldn´t want my app to crash if some guys try to do this and I run out of disk space.
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Most of the temporary files that the system uses are deleted automatically after the task is complete. But there can be some files which stay in your storage for future use. The same can apply for your daily use programs which need these temporary files to complete operations and tasks faster for the users.
Alternatively referred to as a foo file, a temporary file or temp file is a file created to hold information while a file's being created or modified. After the program is closed, the temporary file is deleted. Temporary files store and move data, manage settings, help recover lost data, and manage multiple users.
Most temporary files are stored in the Windows Temp folder, the location of which differs from computer to computer. Manually cleaning out the Temp folder in Windows usually takes less than a minute but it could take longer depending on how large the collection of temporary files is.
You can have Windows 10 clean it every day, every two weeks, every month, and every two months. The time period after which the temporary files are deleted works follows the setting for Storage Sense. Storage sense can delete files every day, every week, every month, or when you're low on disk space.
Temporary files live for the duration of the request. Parsing of the form and the creation of the temp files are handled by the mime/multipart package.
When the server finishes the request, it calls Form.RemoveAll to delete any temporary files associated with the form data.
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