# Apex Consts > Constants Framework for Apex A structured, memory-efficient approach for managing constants in Salesforce with singleton pattern and lazy initialization ## Table of Contents ### Introduction - [Getting Started](https://apexconsts.beyondthecloud.dev/getting-started.md) - [Installation](https://apexconsts.beyondthecloud.dev/installation.md) - [How It Works](https://apexconsts.beyondthecloud.dev/how-it-works.md) ### Usage - [Using Constants](https://apexconsts.beyondthecloud.dev/using-constants.md) - [Creating Custom Constants](https://apexconsts.beyondthecloud.dev/creating-constants.md) - [Best Practices](https://apexconsts.beyondthecloud.dev/best-practices.md) ### Examples - [Examples](https://apexconsts.beyondthecloud.dev/examples.md)