java
AbstractRoutingDataSource :- Importance of Thread Bound Transaction Context for lookup key
I am implementing AbstractRoutingDataSource in our project. From what i read AbstractRoutingDataSource is an abstract data source implementation that routes getConnection() calls to one of various target DataSources based on a lookup key. The latter is usually (but not necessarily) determined through some thread-bound transaction context. What I am wondering is ,what is the advantage of using a thread bound transaction context to determine the lookup key? When is it ideal to use such a method. Any help would be highly appreciated. Thanks in advance :)
Briefly, Bound Threads can change the attributes of the underlying lightweight process. and Lightweight processes are not cached when the bound threads exit. In Scheduling Context; Bound threads for System Scope and Unbound threads are Process Scope. [Docs Oracle, 2010] System Scope: compete for CPU with other system threads (such as Kernel Threads). Process Scope: compete for the CPU within the current process.
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