I have no particular reason why not to use a DB for images but it doesn’t sound good, and you just hit a reason why..
Are these images something that you could view anyway? I.e. essentially public? Why not create a script that gets that image for you? and just link it as a standard image:
(pseudo non-tested code)
viewimage.cfm?imgid=xyz
<cfcontent type=“image/png”>
<cfoutput>#dbimage.blobdata#</cfoutput>
and then in your main file:
<img src="viewimage.cfm?imgid=xyz" />
Then the script would work in a load balanced env.
MD