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What does X-Accel-Limit-Rate really do in NginX?

These are the docs for X-Accel-Limit-Rate:

Sets the rate limit for this single request. Off means unlimited.

Not much there. Most of the examples (I've found only two or three) I've seen set the value of X-Accel-Limit-Rate to 1024. This is obviously 1024 bytes, but per what? Or is that a total of some sort?

Without knowing what the value means it's difficult to know what it's really doing.

Solution

  • Apparently it is bytes per second. Source