Function cacheKey

pkg/server/image.go:171–173

Key format: "scaled:" + bref + ":" + width "x" + height where bref is the blobref of the unscaled image.

(bref string, width int, height int)

// Key format: "scaled:" + bref + ":" + width "x" + height
// where bref is the blobref of the unscaled image.
func cacheKey(bref string, width int, height int) string {
	return fmt.Sprintf("scaled:%v:%dx%d:tv%v", bref, width, height, images.ThumbnailVersion())
}

// ScaledCached reads the scaled version of the image in file,
// if it is in cache and writes it to buf.