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Is it better to make whole getInstance() method synchronized or just critical section is enough? Which one you will prefer?

Deepika Sahu answered on December 25, 2022 Popularity 1/10 Helpfulness 1/10

answer Is it better to make whole getInstance() method synchronized or just critical section is enough? Which one you will prefer?

Is it better to make whole getInstance() method synchronized or just critical section is enough? Which one you will prefer?

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This is again related to double checked locking pattern, well synchronization is costly and when you apply this on whole method than call to getInstance() will be synchronized and contented. 
Since synchronization is only needed during initialization on singleton instance, to prevent creating another instance of Singleton, It’s better to only synchronize critical section and not whole method.
Singleton pattern is also closely related to factory design pattern where getInstance() serves as static factory method.

Read more: https://javarevisited.blogspot.com/2011/03/10-interview-questions-on-singleton.html#ixzz7oRDL7GGX

Popularity 1/10 Helpfulness 1/10 Language java

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Tags: critical-section java synchronized

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Contributed on Dec 25 2022

Deepika Sahu

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Is it better to make whole getInstance() method synchronized or just critical section is enough? Which one you will prefer?

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