Upgrade from Varnish 3 to 4

[Jensen, Kristian]

Hi,

We are about to upgrade from 3 to 4, and have discussed whether we should delete .bin file or not.

Some believe that we should delete it so that varnish can "start from a fresh."

I personally think it is a bad solution, since varnish then write the file from the beginning again, and auto expand it every time there is a need for more space. This will cause fragmentation on and unnecessary operations on the SSD disk.

Is there any reason to delete the file during an upgrade?

Kristian Jensen
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