Research Of Dynamic Load Technology Based On OSGI And Realization Of Over The Air Application Server

With the rapid development of information technology,our daily lives have become more and more convenient.Various kinds of information services provided by the enterprise-level software have become an indispensable part of people's lives.At the same time,various factors make the demand change more faster than ever,resulting in the reduction of the software life cycle,so how to make the software which has millions of users respond to the change quickly and effectively is to be the architect's key concern.Architecture is a core part in a software development,now if we need add or update module into a running software, we should stop the system first and then make operation on it.For a enterprise software which has millions of users,the system downtime first impact on the users'lives,even more serious is the damage to the enterprise's profit and credit.In summary,dynamic load the software module is necessary,but also the technology trends.In view of this,dynamic load technology like Java class loading mechanism,OSGi technology gradually become the weapon of embrace demand change.Over the air application server is a communication software,which is characterized by a large user base and time intensive.This paper raised and solved several major issues in OTAS,these problems also exist in most other enterprise software:(1)The lack of a operational framework to deal with the software's ever-changing demand.(2)Hot swap does not implement in the software.(3)Lack of uniform technical standards.This paper proposed solutions based on the analysis of related technology,use OSGi technology to make OTAS to be a pluggable,dynamical,stable and efficient modular server.After testing,the new system can adapt to dynamic loading and hot swap,OSGi technology can also be applied to the system which has the similar requirements.