Singleton Design Pattern in Java — From Naive to Thread-Safe
The article discusses the Singleton Design Pattern in Java, emphasizing its importance in managing database connections efficiently. It explains how to implement a Singleton pattern to ensure that only one instance of a database connection is created, thus avoiding performance overhead. Additionally, it addresses thread safety concerns and presents solutions for concurrent access to the Singleton instance.
- ▪The Singleton pattern is used to manage database connections efficiently by preventing multiple instances.
- ▪A private constructor is used to restrict instantiation of the class, ensuring a single instance is created.
- ▪Thread safety can be achieved by synchronizing the method that returns the instance.
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try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 849917) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } kichu Posted on May 21 Singleton Design Pattern in Java — From Naive to Thread-Safe #java #designpatterns #beginners #singleton What is the need for Singleton Pattern ? Let's say we need to connect to DB and for every request if we keep creating a new Instance of Db connection to connect to Db this will create a Performance overhead. As it is costly to create a Db connection for every request and it takes time to create the connection which causes delay.
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