writing out one byte at a time….

regarding setUseCache

here’s what procmon sees with it disabled, 20% less disk activity, roughly 30-35m mb less reads and writes

versus currently enabled, see the users folder where my temp folder is has almost no disk activity

oddly, there are all these paths under c:\test which don't exist?

here you can see why, lucee is searching around to find the location, then imageio afterwards starts making tmp files

that blog post recommends a slightly different approach to avoid this issue

On windows, the temp files are appearing in C:\lucee\tomcat\lucee-server with jdk 11.0.7 Tomcat and 5.3.9.5

they are locked by the tomcat process and thus can’t be deleted, but they do disappear after a few minutes

Some additional info, I tested this on my Mac locally and the temp files are getting cleaned up automatically after a few minutes, but on a Linux Server running same version of Lucee 5.3.7.48 with Java openjdk version 11.0.11 the files are not getting cleaned up automatically.