On remove() and set(null) in ThreadLocal

Related articles: Will ThreadLocal of ThreadLocal series leak memory? Today, when summarizing the experience of processing sonar scanning, the students in the group mentioned one point: "ThreadLocal does not call the remove() method, and there is a risk of memory leakage". Sonar is fully described as follows: Call "remove()" on ...

Posted on Thu, 11 Nov 2021 04:30:07 -0500 by ramtulasi

bug caused by improper operation of ThreadLocal

background The project is a simple web project. The multi-user login merchant management system uses ThreadLocal to cache the login user's information (duid, user's unique id) bug description When the test environment has landed many times, the data detected by the query interface is sometimes absent. Troubleshooting process The log is uniquely ...

Posted on Wed, 03 Nov 2021 19:39:23 -0400 by slobodnium

Detailed explanation of ThreadLocal in Java

1, Introduction to ThreadLocal Concurrency is easy to occur when multiple threads access the same shared variable, especially when multiple threads write to a variable. In order to ensure thread safety, general users need to take additional synchronization measures when accessing shared variables to ensure thread safety. ThreadLocal is a way t ...

Posted on Wed, 03 Nov 2021 14:41:53 -0400 by ReignFire

ThreadLocal thread isolation

ThreadLocal is an internal thread storage class under the java.lang package. It can store data in the thread memory. After the data is stored, only the specified thread can get the stored data to realize thread isolation. ThreadLocal creates a copy of the variable in each thread, so each thread can access its own internal copy variable. It can ...

Posted on Sun, 03 Oct 2021 13:07:43 -0400 by guestabc