What is 'singleton' in SAP EP-PIN - Portal Infrastructure?

singleton - Overview

• Component: EP-PIN

• Component Name: Portal Infrastructure

• Description: A design pattern that ensures that a class only has one instance and that provides a global point of reference to that instance.

singleton - Details

• 
  Key Concepts: 
  A singleton is a component of the SAP Enterprise Portal Infrastructure (EP-PIN) that allows for the creation of a single instance of a portal application. This means that only one instance of the application can be created and used at any given time. This helps to ensure that the application is always up-to-date and consistent across all users.
  
  How to use it: 
  In order to use a singleton, you must first create an instance of the portal application. This can be done by using the EP-PIN Portal Infrastructure's "Create Instance" feature. Once the instance has been created, it can then be used by all users who have access to the portal.
  
  Tips & Tricks: 
  When creating an instance of a portal application, it is important to ensure that all users have access to the same version of the application. This will help to ensure that everyone is working with the same version and that any changes made are consistent across all users. Additionally, it is important to keep track of any changes made to the application so that they can be easily reverted if necessary.
  
  Related Information: 
  The SAP Enterprise Portal Infrastructure (EP-PIN) provides a number of features and tools for managing portal applications, including singleton components. Additionally, there are a number of third-party tools available for managing portal applications, such as SAP Solution Manager and