Abstract: The grid service container is a fundamental component in a service grid, which is responsible for shielding resource heterogeneity and hosting grid application services. Most current grid service container implementations adopt thread-based concurrency approach to process concurrent user requests, which has limitations in terms of performance and scalability. An event-driven architecture called SEDA (staged event driven architecture) was adopted to improve the performance of concurrent processing and scalability. It results in decoupling architecture with demarcation stages between which events asynchronous communicate and in which the non-blocking I/O mechanism can be adopted naturally. The early implementation experience and some optimistic performance evaluation results were presented, which show that the event-driven architecture can indeed raise the performance like throughput and latency and get better scalability by the asynchronous message mechanism and the reduction of the system synchronous obstruction.