java - Most performant protocol for uploading binary data to a jax-rs (REST) service -

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environment

my application (war) has javascript frontend , java rest service.

the files uploaded generated in frontend, not directly user interaction -- not use case user uploading files herself. reason, it's necessary initiate upload javascript code.

i need able send metadata (generated other parts of application) binary data when i'm uploading -- why need sort of protocol instead of uploading file.

question

what haven't been able determine best practice uploading files, regards, primarily, protocol used.

i've come across following protocols:

however, internets has, usual, lots of different info hasn't been giving me coherent picture:

  • with regards reliability, internets seems you're better off using multipart/mixed type transfer data, instead of pure application/octet-stream type.
  • json doesn't natively doesn't support binary data, , apparently, base64 has high processing overhead.
  • it's javascript frontend, json preferred.
  • sure, use protobuf.js, i'd rather use leading-edge tech bleeding-edge tech.

my priorities are:

  • reliable data transfer of files between 1 , 10 megabytes.
  • performant , efficient data transfer.
  • readable code/architecture

in short, which of 3 formats mentioned above fits requirements best, given i'm using java rest service on backend?

(if fact i'm using java rest service -- instead of say, servlet -- upload files going biggest slowdown, that's answer!)

edit: added information asked comments -- thanks!


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