Design And Implementation Of Service Chain Migration System In Edge Computing

Mobile edge computing provides services with higher reliability and lower delay by sinking computing and storage resources closer to users.Meanwhile,driven by container technology,chain micro-service has become an emerging service architecture,that is,service is split and combined in a finer granularity,so that operators can provide users with a variety of composite services.This makes the combination of service chain and migration a developing trend.But service chain migration faces many challenges.First of all,the edge server has a certain coverage area,and user movement will lead to service quality degradation or even interruption,so the service migration technology is needed to ensure the continuity of service.Secondly,the migration of service chain may involve multiple migration processes,and the earlier edge cloud selection of micro-service will affect the subsequent edge cloud selection of micro-service.Furthermore,since a single migration of the service chain involves the migration of the current node and subsequent micro-services,the increase in data volume will lead to longer downtime.Therefore,an appropriate service chain migration scheme is needed to solve the above problems.Aiming at the problem that multiple migration of service chain mode affects operation delay,this paper studies the problem model of service chain edge cloud selection in single user scenario,and proposes an improved Gibbs sampling edge cloud selection strategy.After the selection of edge cloud,aiming at the migration problem of the current running service and the subsequent un-running service,this paper further proposes the migration strategy of cloud edge end collaboration service chain.The experiment proves that the above two strategies can effectively reduce the downtime of service chain migration and reduce the total latency of service chain operation.This paper first introduces the research background and related technologies of edge computing service migration,then introduces the proposed edge cloud selection strategy and service chain migration strategy,and carries out simulation experiments on the two strategies respectively.Then this paper carries on the demand analysis of the service chain migration system,and then carries on the outline design,detailed design and final implementation.Finally,the test verifies that the system meets the design requirements and verifies the proposed strategy.