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Definition: hotspot


(1) For Wi-Fi networks, see Wi-Fi hotspot.

(2) A network node that is processing at maximum capacity or is backlogged.

(3) The instructions in a program that are executed more than the others. To improve performance, the hotspots are the routines that should be refined. A Java compiler aptly named Hotspot optimizes the parts of the program executed most frequently.

(4) (hot spot) An area with excessive heat in the datacenter. Hot spots are typically found near server racks not cooled properly. Contrast with "cold spot," which is an area that is too cool, often because it is near air conditioning vents.

(5) The part of a graphic on a Web page that serves as a link to another website or page. When the hotspot area is clicked or tapped, the link is executed. The more the hotspot occupies the entire area of the graphic, the easier it is to select. However, too often, the hotspot is only a small area within the graphic. See hypergraphic and image map.




The Hotspot Location
The hotspot comprises the actual pixels that the cursor makes contact with on the graphic. In this example, the cursor must make contact with the text.






A Really Bad Example
This graphic link appears when encrypted content is selected in the application (top). However, even though the background color darkens when the cursor is over the graphic (middle), the link is still not clickable until the cursor is moved over the three dots on the right.