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Alternatives to the Singleton Design Pattern

page 1 of 6

Published: 23 Nov 2010

Unedited - Community Contributed

Abstract
The Singleton Design Pattern is one of the simplest and most widely known design patterns in use in software development. However, despite its simplicity, it is very easy to get wrong and the consequences of its use even when properly implemented can outweigh its benefits. It turns out there are other ways to achieve the goals of the Singleton pattern which will often prove to be simpler, safer, and more maintainable.

by Steven Smith
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Article Contents:

Introduction
The Singleton Pattern
Single Responsibility Principle
Testing
IOC Container Managed Lifetime
References and Summary

Introduction

The Singleton Design Pattern is one of the simplest design patterns in software development, yet one of the easiest to misuse as well. In this article, we'll examine some alternatives to the Singleton pattern in its most naïve implementation, as well as consider an alternative to making classes themselves responsible for managing their instances.

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User Comments

Title: Just use public static readonly
Name: Ramon Smits
Date: 12/8/2010 7:42:43 PM
Comment:
Just use a public static readonly member. Easy, fast, lazy and threadsafe!

public class MyClass
{
public static readonly MyClass Instance = new MyClass();
private MyClass(){}
}

Much easier then this will be difficult to do!

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