Hello, please refer to this article:
When uploading or downloading files, the w3wp.exe process increases in memory size proportionate to the file size. However, if files are processed directly through Tomcat on port 8888, there are no memory issues.
In Lucee, any CFM file can accept file uploads, and continuously calling arbitrary CFM files via IIS AJP may cause the server’s memory to increase quickly, resulting in w3wp.exe not being able to free up memory fast enough.
I eventually resolved the issue using an IIS reverse proxy or Nginx reverse proxy to Tomcat on port 8888