Programmer Humor

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submitted 5 months ago by [email protected] to c/[email protected]

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[–] [email protected] 2 points 5 months ago (2 children)

With something like this, how do you handle the period of time while copying? I mean you can't really leave it running as it wouldn't be in a consistent state. A "under maintenance" page instead? Copy to a fresh folder and when done tell the webserver to serve the new location?

[–] folekaule 9 points 5 months ago* (last edited 5 months ago)

It depends. I've done it a few different ways:

YOLO: especially with thugs like PHP you only affect one page at a time and with low traffic the odds of a problem is small
Maintenance page: temporarily show a page. Some servers like IIS have this built in. Otherwise it's a simple update to httpd conf
In a cluster environment, just take the node you're updating out of rotation, and only update one node at a time.
Copy and switch like you suggested. Can be combined with any of the above and is a smart move if upload is slow or can be interrupted, or it's cumbersome to restore the old files

Edit: spelling