I've recently started trying to increase my sites performance. One of the biggest obstacles I have are the number of thumbnails being displayed.
I currently use the full size image and scale it down by defining a height/width value in the img tag. This doesn't seem very efficient so my question is whats the recommended way to display thumbnails? Should I maintain a second table in the DB for thumbnails or is there a better solution?
分享 Processing images takes its (cpu) toll, you should better avoid it where possible.
My advice: Create the thumbnails while uploading the images into separate image files, this way you can determine when to create/resize them - and not during runtime.
If you want the links to the thumbnails in a separate database field or derive it from the original name, is entirely up to you - both ways work.
This makes additional performance boosters easier to implement too (p.e. caching).
I've implemented a similar process in a php based project, its a good way to scale out. In my case, I am creating the thumbnails nightly via cron, because system load is very low in that time.
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