[原创]嵌入式微秒级内存数据库eXtremeDB.

eXtremeDB实时数据库是一款特别为实时与嵌入式系统数据管理而设计的数据库，只有50K到130K的开销，速度达到微秒一级。接口语言包括C、C＋＋、嵌入式SQL、JNI等，通过定制数据库根据应用动态生成。使用时通过接口编程，编译链接时将eXtremeDB内核嵌入到应用程序中。eXtremeDB完全驻留在主内存中，不使用文件系统（包括内存盘在内）。eXtremeDB通过交易机制保证数据一致性来支持本地多进程或多线程，通过RPC或RSQL实现网络化访问。eXtremeDB通过eXtremeLog实现磁盘镜像、通过eXtremeHA实现内存镜像进行自动在线备份以保证数据安全,最新的支持磁盘和内存两种操作模式的eXtremeDB Fusion。eXtremeDB支持各种平台，包括Solaris、HPUX、Windows、Linux、VxWorks、eCos等各种OS，运行在x86、ARM、PowerPC、MIPS等各种处理器上。体验eXtremeDB会有一种耳目一新的感觉。

技术交流：tonyjiangbest@yahoo.com.cn
欢迎喝大家共同交流实时方面的技术，eXtremeDB下载中心：http://www.leadingtek.com.cn/developer-zone/developer-zone.asp

好消息：eXtremeDB内存实时数据库在线研讨会～～


知名实时数据库专家McObejct公司将于2008-7-11(下周五)下午12：00开展实时数据库eXtremeDB在线研讨会，欢迎广大的工程师朋友踊跃参加技术研究讨论：

参会入口：
http://www.mcobject.com/pressroom.php?step=3&article=104


Event Information: Embedded Databases: Building In ‘Always On’ High Availability (Asia - Pacific region)
 This event requires registration
   Event status: Not started  
Date and time: Thursday, July 10, 2008 9:00 pm
Pacific Daylight Time (GMT -07:00, San Francisco)
Change time zone  
 Friday, July 11, 2008 12:00 pm
China Standard Time (GMT +08:00, Beijing)  
 Friday, July 11, 2008 1:00 pm
Japan Standard Time (GMT +09:00, Tokyo)  
 Friday, July 11, 2008 1:00 pm
Korea Standard Time (GMT +09:00, Seoul)  
Duration: 1 hour
Description: Attend McObject’s free 1-hour webinar, “Embedded Databases: Building In ‘Always On’ High Availability”, for development solutions that address the “always on” needs of mission critical embedded systems, while also taming these applications’ growing data complexity.

When data management coding becomes a burden, integrating an off-the-shelf database management system (DBMS) can improve reliability, scalability and time-to-market. Embedded systems developers often choose in-memory database systems, which offer faster performance, greater efficiency and a smaller code footprint.

But this approach highlights the issue of operational continuity, important in so many embedded applications. How can a RAM database survive the failure of the software or hardware environment in which it operates? And how can an embedded database (in-memory, or not) meet the high availability (HA) needs of telecommunications, military/aerospace, industrial control and other applications that require fault-tolerance?

In this presentation, McObject CEO Steve Graves lays out specific strategies to overcome this vulnerability. Attendees will learn general principles of database High Availability, or the ability to keep an application or service continuously operational and usable by clients (99.999% uptime is the benchmark).

The presentation walks through the process of HA-enabling an application on both Master and Replica database nodes, as well as speeding development and preserving platform-independence by using an HA Application Framework. It addresses advanced topics such as synchronous (“eager”) vs. asynchronous (“lazy”) replication and the role of time-cognizance in deterministic HA applications.

In the event’s Q&A session, attendees can leverage Mr. Graves’ 20+ years of embedded database experience to address their own data management and High Availability challenges.

Learn to reap the benefits of High Availability in real-time embedded applications. Register to attend “Embedded Databases: Building In ‘Always On’ High Availability” on Friday, July 11!