From embedded software in a mobile device to software in a large enterprise server, it is important that resources, such as memory, threading, files, or network connections are managed efficiently to allow the systems to function properly and effectively. In many systems, the actual need for resource management is discovered late in the software development lifecycle, at system-analysis or performance-analysis time. The design techniques that must be used in implementing resource management in a system depend largely upon the domain, the system constraints and requirements. A technique that works well in a particular system or configuration may not be as effective in a different system.