In the development stage, we mainly work in the Windows environment for customization. As the provided development tool, IStudio, is based on Swing, it is optimized for the Windows environment. The operating environment does not require special O/S. However, for the latest version of MESIM, JDK 1.6 or higher is recommended. 

HTTP, TCP/IP, X.25, and SOAP protocols are provided, and the basic connection method is through JMS. In addition, other interfaces can be used, and if necessary, plug-ins can be used or provided through customization. 

There are two types of linkages: a synchronous method that enables real-time processing and an asynchronous method that is batch-wise. Each linkage method can be set and used according to the project. 

Once the linkage is established and the sending/receiving system setting is complete, it may be difficult to understand the linkage from the linkage point of view. MESIM EAI provides the connection pattern and configuration diagram constructed through modeling in GUI. 

MESIM EAI transmits and receives data while maintaining data stability and resource efficiency as much as possible through segmentation/compression during large-capacity processing. 

In order to operate the system stably, MESIM EAI provides data consistency and integrity by using all transmission and reception systems XA and 2Phase-commit. In case of failure, it basically provides auto-starting function, and provides load-balancing and fail-over functions through HA (High-Availability). Equipment such as L4 and CFS (Cluster File System) is required to utilize this function. 

SSL 2.0 is used for network layer security, and symmetric key encryption such as SEED, ARIA, DES, and DEDES is used for data. Also, you can apply third-party just by setting it. 

You can check all connected systems through EMC, the management console. You can check the current status of the adapter (started, stopped, failed), and the status of resources is provided as a graph, making it easier for administrators to operate/manage them. 

EAI is a data-centric solution, and ESB is a service-centric integration solution. 

Although the functions and performance of MESIM EAI are different for each version, the linkage method was developed by including the lower version in the upper version. Therefore, you can upgrade stably and simply by installing a higher version of Hub and performing the upgrade for each system.