问题
Is there a way to tell curl command not to use server's side cache? e.g; I have this curl command:
curl -v www.example.com
how can I ask curl to send a fresh request to not use the cache?
Note: I am looking for an executable command in the terminal.
回答1:
I know this is an older question, but I wanted to post an answer for users with the same question:
curl -H 'Cache-Control: no-cache' http://www.example.com
This curl command servers in its header request to return non-cached data from the web server.
回答2:
The -H 'Cache-Control: no-cache' argument is not guaranteed to work because the remote server or any proxy layers in between can ignore it. If it doesn't work, you can do it the old-fashioned way, by adding a unique querystring parameter. Usually, the servers/proxies will think it's a unique URL and not use the cache.
curl "http://www.example.com?foo123"
You have to use a different querystring value every time, though. Otherwise, the server/proxies will match the cache again. To automatically generate a different querystring parameter every time, you can use date +%s, which will return the seconds since epoch.
curl "http://www.example.com?$(date +%s)"
来源：https://stackoverflow.com/questions/31653271/curl-command-without-using-cache