How BigQuery Manages Slots


When a query’s capacity demands change, BigQuery automatically re-evaluates the availability of slots. It also re-allocates and pausing them when necessary. It does this so that, given fair scheduling, all queries can use the slots they’ve been allocated.

In the past, when a person played a slot machine, they simply pulled a lever and either won or lost. Today, computerized slots allow a person to bet on multiple lines at once — up, down, sideways or diagonally. Some of these machines offer up to 200 different possible outcomes for each spin. This complexity makes them very attractive to people who want to try their luck at winning a jackpot or avoiding a loser streak.

While some people still have a negative perception of gambling, casinos are an important source of revenue for many cities. They are particularly popular among low-income residents and provide them with a chance to win money, even if they don’t gamble much. However, many people don’t realize that casino gambling is expensive. For instance, one study found that patrons spent an average of more than $700 per visit, and some spend up to $2,500 a week.

Moreover, casinos’ profits come mostly from slots. Despite the image of slot machines as arcade games only played by old ladies, they account for 85 percent of all gambling profits. That’s why many states have laws that prohibit them from paying out more than 75 percent of the total amount of money they accept as bets.

Posted on