Comment by jaffathecake
24 days ago
If the bandwidth saving gets you the image 10ms sooner, but due to the decoding time it takes 70ms longer to display, you're losing.
And in the cached cache, the bandwidth saving is gone, and you're still paying the decoding penality.
Right, so in that hypothetical scenario where your bandwidth is over ~40MB/s, the bandwidth saving isn’t so relevant. That sounds a bit tautological?
I'm not sure where you're getting those numbers from. But, in the cached case, the download time is very fast, yes.
And you might want the cache to either take up less space or hold more images.