Realizes Three-Tier Structure Mail System Based on the Web

摘要

E-mail system in the B / S three-tier structure in the features: the cli ent part of the message processing logic assigned to a feature server, no longer responsible for dealing with complex calculations and data access to key services, enabling e-mail client running efficiency is improved. Three-tiered structure also makes it clear layers of function modules, independently of each other, thus greatly simplifying maintenance and modification work.