Abstract: The hot deployment mechanism is a typical feature of mainstream application servers.But current application servers only support hot deployment of standalone applications,which cannot satisfy the requirement of complicated enterprise applications with dependency injection.Failures will occur when some modules are updated online,which will result in failure of the whole application platform.To solve the problem,a technology of hot deployment with dependency reconstruction was introduced.We created dependencies between modules when each module of applications is deployed at the first time.On its updating,we found out modules affected by the update,reconstructed dependency and carried out partial hot deployment,avoiding the cost of restarting application server.Experiments show that our technology of hot deployment can ensure the correctness of the application with dependency injection and operating efficiency of application servers will be highly improved in the scenario of real-world applications.

Key words: Hot deployment,Dependency reconstruction,Application server