Disable static file caching in Tornado

Question

By default, Tornado puts a Cache-Control: public header on any file served by a StaticFileHandler. How can this be changed to Cache-Control: no-cache?

0xdabbad00 · Answer 1 · 2014-04-30T22:01:58.123

48

The accepted answer does not work for Chrome. Subclass StaticFileHandler using the following:

class MyStaticFileHandler(tornado.web.StaticFileHandler):
    def set_extra_headers(self, path):
        # Disable cache
        self.set_header('Cache-Control', 'no-store, no-cache, must-revalidate, max-age=0')

edited Apr 30 '14 at 22:01

answered Sep 18 '13 at 18:27

0xdabbad00

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1

This worked for me on Safari and Chrome for Mac OS. +1 – Randall Cook Mar 28 '14 at 19:49

score 17 · Accepted Answer · answered Aug 20 '12 at 00:40

17

Looking into the tornado/web.py it seems that the easiest way is to subclass the StaticFileHandler and override the set_extra_headers method.

def set_extra_headers(self, path):
    self.set_header("Cache-control", "no-cache")

answered Aug 20 '12 at 00:40

sigman

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Disable static file caching in Tornado

2 Answers2