Middleware (middleware)

Middleware has become an indispensable key technology for building distributed and heterogeneous network information systems. It is also listed as the three pillars of the basic software system as the operating system and database management system.

Middleware (MiddlewareIs a major category of basic software and belongs to the scope of reusable software. As the name suggests, middleware is in the middle of the operating system software and the user's application software. Middleware is built on the operating system, network, and database, and the lower layer of the application software. Its role is to provide an environment for running and developing the application software on its upper layer, it helps users develop and integrate complex application software flexibly and efficiently.

Among the many definitions about middleware, it is widely accepted thatIDCDescription: middleware is an independent system software or service.ProgramDistributed Application Software shares resources between different technologies. The middleware is located on the operating system of the client server to manage computing resources and network communication.

Middleware classification:

LMessage Middleware

LData access middleware

LRemote Call Middleware

LTransaction Processing Middleware

LObject Request Proxy Middleware

Middleware features:

LEase of use

LLocation transparency: the application does not need to know the network and application address of the other party. without re-compilation, the application can be transferred from one machine to another.

LIntegrity of message transmission: messages should not be lost or duplicated

LMessage format integrity: the message format should not be damaged

LLanguage transparency: middleware programs should be able to communicate with other programs written in different languages; if one program is rewritten in different languages, other programs should not be affected