PathcoreFlow™ Release Notes

v4.1.1 (2025-04-07)

Fixed in this Release

We have made several updates to the image indexing service (iis) to help prevent rendering issues that occur when image files on an indexed volume are altered. For example, this can occur if a slide is rescanned and the new image replaces an existing file using the same path and name. The improvements include:

• Common endpoints that access images now periodically check the file size and mark the file as missing if it detects a change. This prevents further tile retrieval on the old version of the image.
  • If the image is actively being viewed when it is rescanned, the end user may see mixed results before requests are blocked.
  • Refreshing the page while viewing an image that has changed will show an informative messages such as "This version of the image is no longer available." or "File missing".
  • The altered image (defined by its path and contents) will be detected as a new file by the indexing process.
• Internal frame redirects are now tagged with the file ID so nginx won't serve stale cache data for tiles from a previous version.

These improvements will reduce the likelihood that stale (cached) data is used to render images on an indexed volume that have been altered by external processes.