Exploiting ThreadLocal to enhance scalability
Description
This gives an overview of the ThreadLocal class that appeared in the version 1.2 of the Java platform. It may be difficult to write thread-safe classes and it needs a thorough analysis of the conditions under which variables will be read or written. It also requires a careful scrutiny of how the class might be used by other classes. It may at times be very difficult to make a class thread-safe without concession on its functionality, performance or ease of use. It is difficult to make those classes thread-safe in any practical way, which retain state information from one method invocation to the next.
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