The difference between singleton design pattern formula and starving the lazy formula

Disclaimer: This article is a blogger original article, follow the CC 4.0 BY-SA copyright agreement, reproduced, please attach the original source link and this statement.

This link: https://blog.csdn.net/HYJ940228/article/details/102724473

The difference between singleton design pattern formula and starving the lazy formula

eg:

• Starving type:

• Lazy type:

• Double lock lazy type:

Scenario:

Lazy formula: The configuration files (lazy loading);