The Performance Optimization Of Database In Mail Filter System

E-mail service is the most basic one in all internet services, it has provided enormous convenience for people's work, life, and entertainment. However, every thing has two aspects, along with the email popularization and ease to gain, it also brought our work and life certain negative effect, a familiar question is so-called "junk mail" and "harmful mail".In view of this situation, the paper combines the design of mail filter system , in the course of participation in the practical application project research , does the corresponding research to the performance optimization of mail filter system's database, proposes some concrete performance adjustment methods and measurement, applies in the overall system design and application process, obtains preferable application effect.The paper first introduces the concept, aim, basic strategy and implement manner of system database performance adjustment. In the next place, combining system design, introduces concrete performance adjustment technology application, system database's security authentication and authorization optimization, SQL sentence optimization. Finally, analyzes the influenced factors of data backup and recovery performance, puts forward data backup and recovery realization means.For database performance adjustment question is a quite big research category, including hardware adjustment, application adjustment and so on, the involved lay is also complex, the database also should be comprehensively considered in the concrete practical application.