# Acceleration

## Y

The Power Fx Acceleration function is a feature that allows users to optimize the performance of their Power Apps solutions. This function can help users create solutions that run faster and more efficiently, making it a critical tool for any Power Apps developer. In this article, we’ll take a closer look at how to use the Power Fx Acceleration function in Power Apps.

## What is Power Fx?

Before we dive into the Power Fx Acceleration function, it’s essential to understand what Power Fx is. Power Fx is a low-code programming language that was introduced by Microsoft in 2021. It was designed to be used with Power Apps and allows users to create custom formulas and expressions that can be used to build complex applications.

Power Fx is a powerful tool that can help users create custom solutions quickly and easily. It provides a simple and intuitive syntax that can be used to create complex formulas and expressions.

## What is the Power Fx Acceleration Function?

The Power Fx Acceleration function is a feature that allows users to optimize the performance of their Power Apps applications. This function can help users create applications that are faster and more efficient by reducing the number of calculations that need to be performed.

The Power Fx Acceleration function works by caching the results of calculations that are repeated frequently. This means that if a calculation is performed multiple times in a formula, the result of that calculation will be cached, and the cached result will be used instead of recalculating the formula every time it is used.

By using the Power Fx Acceleration function, users can significantly improve the performance of their Power Apps applications.

## How to Use the Power Fx Acceleration Function

Using the Power Fx Acceleration function in Power Apps is straightforward. To use this function, follow the steps below:

1. Open Power Apps and select the application that you want to optimize.

2. Navigate to the formula bar and select the formula that you want to optimize.

3. Add the “With” keyword to the formula and specify the name of the variable that you want to use to store the cached result.

4. Add the “If” keyword to the formula and specify the condition that must be met to use the cached result.

5. Add the formula that you want to use to calculate the result if the condition is not met.

Here’s an example of how to use the Power Fx Acceleration function in a formula:

``` With( { cachedResult: MyFormula() }, If( MyCondition, cachedResult, MyFormula() ) ) ```

In this example, the “With” keyword is used to specify the name of the variable that will be used to store the cached result of the formula. The “If” keyword is used to specify the condition that must be met to use the cached result. If the condition is not met, the formula will be recalculated.

## Best Practices for Using the Power Fx Acceleration Function

When using the Power Fx Acceleration function, it’s important to follow some best practices to ensure that you get the best performance from your Power Apps application. Here are some best practices to follow:

1. Use the Power Fx Acceleration function for frequently repeated calculations.

2. Use the Power Fx Acceleration function for large calculations that take a long time to perform.

3. Use the Power Fx Acceleration function for calculations with complex dependencies.

4. Use the Power Fx Acceleration function for calculations that require external data sources.