Overview

Local Storage and Session Storage are web storage mechanisms provided by HTML5 that allow you to store key-value pairs in a web browser. Local Storage retains data across browser sessions, meaning it persists even after the browser is closed. Session Storage, on the other hand, stores data only for the duration of the page session, and it vanishes as soon as the browser tab or window is closed.

This module, "HTML5 Storage: Cache your data," provides JavaScript actions to efficiently manage your data using both local and session storage. It allows you to:

• Store data in local or session storage.
• Fetch data from local or session storage.
• Clear specific items or all data from local or session storage.

These actions make it simple to implement caching in your Mendix applications, ensuring your data is easily accessible and efficiently managed.

Documentation

Typical Usage Scenario

This module is ideal for applications that require persistent or session-based data storage directly in the user's browser. For example, you can use it to:

• Cache user preferences: Store settings like theme selection, language preferences, or other personalized configurations that should persist across sessions.
• Save form data: Retain form inputs temporarily during a session, allowing users to continue filling out forms even after page reloads.
• Implement offline functionality: Store data locally when the internet connection is unavailable, and sync it back to the server once the connection is restored.
• Session-specific data management: Use session storage to keep track of temporary data, like user progress in a multi-step form, without affecting other tabs or windows.

By leveraging local and session storage, this module helps enhance the user experience by reducing server load, improving page load times, and allowing for offline capabilities.

Features and Limitations

Features:

• Store Data: Easily store key-value pairs in both local and session storage with JavaScript actions.
• Fetch Data: Retrieve stored data seamlessly, whether it's persistent (local storage) or session-specific.
• Clear Data: Remove specific items or clear all data from either storage type, ensuring data is managed efficiently.
• Compatibility: Works across all modern browsers that support HTML5 storage, ensuring broad applicability.

Limitations:

• Storage Limits: The module is subject to HTML5 storage limits, typically around 5MB per domain for both local and session storage.
• Security Considerations: Data stored in local and session storage is not encrypted, so sensitive information should be handled carefully.
• Browser Dependency: The module relies on the browser's storage capabilities, which may be affected by user settings (e.g., clearing cookies and site data) or private browsing modes.
• Data Synchronization: While local storage persists across sessions, it is not automatically synchronized across different devices or browsers. Consider using additional server-side storage if cross-device consistency is required.