What Is a Slot?

A narrow notch, groove, or opening, such as one used for inserting a coin in a slot machine.

Also, used as a term meaning a position in a series, sequence, or program. He was slotted into that role in the production.

A computer-controlled device that spins a series of reels, each with multiple symbols, and then displays combinations of those symbols to the player in order to generate winning combinations and payout amounts. In modern slots, the number of possible symbol combinations has been greatly increased by using microprocessors to weight particular symbols in a given reel’s rotation.

In ATG, a slot is a dynamic placeholder that either waits for content (a passive slot) or calls out for it (an active slot). The slot’s content is dictated by a scenario and the content is displayed on a page by a renderer.

You can mark settings as deployment slot settings, which makes them “sticky” when you swap a function app with a different instance of the same app. This ensures that event sources and bindings are connected to the correct slot and prevents accidental changes to these configuration settings. However, setting names must be consistent across slots to make this work. For example, the WEBSITE_HTTPLOGGING_RETENTION_DAYS and DIAGNOSTICS_AZUREBLOBRETENTIONDAYS settings must be configured as deployment slot settings before you swap them. Otherwise, these settings will not appear in the new instance of the app and can be accidentally changed. This can cause a build error.