Jakarta EEvignette|Logo de Jakarta EE Jakarta EE (anciennement Java 2 Platform, Enterprise Edition, ou J2EE //, puis Java Platform, Enterprise Edition ou Java EE), est une spécification pour la plate-forme Java d'Oracle, destinée aux applications d'entreprise. La plate-forme étend Java Platform, Standard Edition (Java SE) en fournissant une API de mapping objet-relationnel, des architectures distribuées et multitiers, et des services web. La plate-forme se fonde principalement sur des composants modulaires exécutés sur un serveur d'applications.
Software lockoutIn multiprocessor computer systems, software lockout is the issue of performance degradation due to the idle wait times spent by the CPUs in kernel-level critical sections. Software lockout is the major cause of scalability degradation in a multiprocessor system, posing a limit on the maximum useful number of processors. To mitigate the phenomenon, the kernel must be designed to have its critical sections as short as possible, therefore decomposing each data structure in smaller substructures.