A Guide to Slot Machines


Slot is a type of gaming machine in casinos. It has a long history, but only in the last two decades has it become the primary source of casino revenue. This article looks at how Charles Redd envisioned ways to apply emerging technology to the form and function of slot machines, enabling them to take on a role that previously only table games could fill.

Slot – a narrow, elongated depression, groove, notch, or slit, especially one providing a track or path for a moving object (such as a deer).

In casinos, slots are often defined by their POP and RTP (Payout Percentage and Return To Player), which tell players what the machine is expected to pay back over time and in the short term respectively. These numbers can be confusing to new and experienced gamblers alike, so we’ve put together a guide to slot terminology.

A slot is a position, either in a sequence or on a schedule: “He has to be there at 1 p.m.”

In BigQuery, slots are purchased and assigned to jobs in pools called reservations. When a query’s capacity demands change, BigQuery automatically re-evaluates the reservation’s capacity availability and reassigns or pauses slots as needed. You can create multiple reservations for different purposes; for example, you might have a reserved pool named prod for production workloads and another named test for testing. As a best practice, we recommend creating only one administration project for your reservations to simplify billing and allocation.