[Cialug] instant replication with rsync

[Paul Gray]

Matthew Nuzum wrote:
> Is there a way to use rsync (or a similar tool) to get near instant replication?
> 
> Scenario, you have a website that allows users to upload images. Files
> are uploaded several times per day at unpredictable intervals. You
> want the images to appear instantly regardless of which webserver they
> were uploaded on.

How are users uploading?  If they're uploading via a web front-end, then 
having the upload script do an rsync following any uploads would make the 
most sense.  You can also mount the filesystem across your web servers via 
nfs, etc...which would make sense if they had a common backend network for 
filesharing.

-PG