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#402 Caching Forecasts for a High-Load Endpoint

Companies:
Avito
Themes:
System DesignCachingPractice
  • There is an aiWeatherForecast function that calculates the temperature through a neural network in approximately one second.
  • There is a high-load /weather endpoint handling 10k RPS. The endpoint calls getWeatherForecast to obtain the forecast.

Optimize getWeatherForecast for high load: 

public class WeatherForecaster {

    public int getWeatherForecast() throws InterruptedException {
        // TODO optimize the method for high load
        return aiWeatherForecast();
    }

    private int aiWeatherForecast() throws InterruptedException {
        Thread.sleep(1000);

        return new Random().nextInt(70) - 30;
    }
}

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