How to create multiple thumbnail images while creating the Image assets
Hi all!
I have a requirement to create several thumbnail images (of different sizes), while creating new assets of image. These vignettes must be associated with different attributes after the recording of assets. I thought you used miniature filter, but I read that it uses a library of swing, it's very very inefficient memory-wise and we can experience the memory leak and crashes with only a very limited number of images... Another solution is to set up the filter citing ImageMagick with a system exec: it's fast, it does not have the memory and it also generates a much greater quality of thumbnail image resizer that comes with swing.
What do you think, and how can I implement this?
Thank you very much!
Hello Elena,
We noticed some performance issues in our current client, so we changed the miniature filter by default:
A temporary file is no longer used for the input image. The source image is used directly, because it is not changed by the thumbnail generator.
This avoids some performance issues, we have detected. First of all, because of the way the image has been copied (a byte is read and written each time), and second, because of some file systems environments run badly.
In addition, it relies on "deleteOnExit", which can produce an impact on the performance of the application server, as the JAVA virtual machine must maintain a list of files to delete when leaving, and which consumes memory. It is even more problematic on servers that are not restarted very often. And if at the end the application server is not normally off, these files would not be removed.
On the other hand it seems that the thumbnail generator is not necessary that the image source file ends with the extension of the right.
Now we use the provided source image directly, it's a ".tmp" instead of a file (for example) the file ".gif".
It will be useful,
Gerardo
Tags: Fusion Middleware
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