153 10.1.1 Machines created by VirtualBox version 4.0 or later . . . . . . . . . . . 153 10.1.2 Machines created by VirtualBox versions before 4.0 . . . . . . . . . . . 154 10.1.3 Global configuration configuration data . . . . . . . . . . . . . . . . . . . . . . . . . . 154 10.1.4 Summary of 4.0 configuration changes . . . . . . . . . . . . . . . . . . 155 10.1.5 VirtualBox XML files . . . . . . . . . . . (“Karmic Koala”), 10.04 (“Lucid Lynx”), 10.10 (“Maverick Meerkat). – Debian GNU/Linux 3.1 (“sarge”), 4.0 (“etch”), 5.0 (“lenny”) and 6.0 (“squeeze”) – Oracle Enterprise Linux 4 and 5 – Redhat Enterprise Linux

151 10.1.1 Machines created by VirtualBox version 4.0 or later . . . . . . . . . . . 151 10.1.2 Machines created by VirtualBox versions before 4.0 . . . . . . . . . . . 152 10.1.3 Global configuration configuration data . . . . . . . . . . . . . . . . . . . . . . . . . . 152 10.1.4 Summary of 4.0 configuration changes . . . . . . . . . . . . . . . . . . 153 10.1.5 VirtualBox XML files . . . . . . . . . . . (“Karmic Koala”), 10.04 (“Lucid Lynx”), 10.10 (“Maverick Meerkat). – Debian GNU/Linux 3.1 (“sarge”), 4.0 (“etch”), 5.0 (“lenny”) and 6.0 (“squeeze”) – Oracle Enterprise Linux 4 and 5 – Redhat Enterprise Linux

152 10.1.1 Machines created by VirtualBox version 4.0 or later . . . . . . . . . . . 152 10.1.2 Machines created by VirtualBox versions before 4.0 . . . . . . . . . . . 153 10.1.3 Global configuration configuration data . . . . . . . . . . . . . . . . . . . . . . . . . . 153 10.1.4 Summary of 4.0 configuration changes . . . . . . . . . . . . . . . . . . 154 10.1.5 VirtualBox XML files . . . . . . . . . . . (“Karmic Koala”), 10.04 (“Lucid Lynx”), 10.10 (“Maverick Meerkat). – Debian GNU/Linux 3.1 (“sarge”), 4.0 (“etch”), 5.0 (“lenny”) and 6.0 (“squeeze”) – Oracle Enterprise Linux 4 and 5, Oracle Linux 6 – Redhat

154 10.1.1 Machines created by VirtualBox version 4.0 or later . . . . . . . . . . . 154 10.1.2 Machines created by VirtualBox versions before 4.0 . . . . . . . . . . . 155 10.1.3 Global configuration configuration data . . . . . . . . . . . . . . . . . . . . . . . . . . 155 10.1.4 Summary of 4.0 configuration changes . . . . . . . . . . . . . . . . . . 156 10.1.5 VirtualBox XML files . . . . . . . . . . . (“Karmic Koala”), 10.04 (“Lucid Lynx”), 10.10 (“Maverick Meerkat). – Debian GNU/Linux 3.1 (“sarge”), 4.0 (“etch”), 5.0 (“lenny”) and 6.0 (“squeeze”) – Oracle Enterprise Linux 4 and 5, Oracle Linux 6 – Redhat

154 10.1.1 Machines created by VirtualBox version 4.0 or later . . . . . . . . . . . 154 10.1.2 Machines created by VirtualBox versions before 4.0 . . . . . . . . . . . 155 10.1.3 Global configuration configuration data . . . . . . . . . . . . . . . . . . . . . . . . . . 155 10.1.4 Summary of 4.0 configuration changes . . . . . . . . . . . . . . . . . . 156 10.1.5 VirtualBox XML files . . . . . . . . . . . (“Karmic Koala”), 10.04 (“Lucid Lynx”), 10.10 (“Maverick Meerkat). – Debian GNU/Linux 3.1 (“sarge”), 4.0 (“etch”), 5.0 (“lenny”) and 6.0 (“squeeze”) – Oracle Enterprise Linux 4 and 5, Oracle Linux 6 – Redhat

10.1.1 Machines created by VirtualBox version 4.0 or later . . . . . . . . . . . 148 5 Contents 10.1.2 Machines created by VirtualBox versions before 4.0 . . . . . . . . . . . 149 10.1.3 Global configuration configuration data . . . . . . . . . . . . . . . . . . . . . . . . . . 149 10.1.4 Summary of 4.0 configuration changes . . . . . . . . . . . . . . . . . . 150 10.1.5 VirtualBox XML files . . . . . . . (“Jaunty Jackalope”), 9.10 (“Karmic Koala”), 10.04 (“Lucid Lynx”). – Debian GNU/Linux 3.1 (“sarge”), 4.0 (“etch”) and 5.0 (“lenny”) – Oracle Enterprise Linux 4 and 5 – Redhat Enterprise Linux 4 and 5 – Fedora

11 License information 283 12 Main API change log 284 12.1 Incompatible API changes with version 4.0 . . . . . . . . . . . . . . . . . . . . . 284 12.2 Incompatible API changes with version 3.2 . . function invoked by the API. As opposed to the callbacks that were used in the API before VirtualBox 4.0 however, events are now objects with an interface hierarchy. • Passive listeners are somewhat trickier exact reason and the changes you made to this machine will not be saved. Starting with VirtualBox 4.0, a “.vbox” extension of the settings file is recommended, but not enforced. (Previous versions always

202 10.1.1 Machines created by VirtualBox version 4.0 or later . . . . . . . . . . . 202 10.1.2 Machines created by VirtualBox versions before 4.0 . . . . . . . . . . . 203 10.1.3 Global configuration configuration data . . . . . . . . . . . . . . . . . . . . . . . . . . 203 10.1.4 Summary of 4.0 configuration changes . . . . . . . . . . . . . . . . . . 204 10.1.5 VirtualBox XML files . . . . . . . . . . . Installation details, page 35 for details about the various installation methods. Starting with version 4.0, VirtualBox is split into several components. 1. The base package consists of all open-source components

WebContainer (JSP/Servlet) 4.17.3. Naming (JNDI) 4.17.4. Transaction (JTA) 4.17.5. DataSources (JDBC) 4.17.6. JMS 4.17.7. Persistence (JPA) 4.17.8. EJB 4.17.9. CDI 4.17.10. HA/failover and cluster 3. Profiling 5.15.4. Monitoring 5.16. Configuration 5.17. Deployer 5.18. Dump extender 5.19. JDBC & JPA 5.20. JMS 5.21. Custom log appender 5.22. Custom JMX MBean 5.23. Working with profiles features/enterprise/4.0.x/xml/features • mvn:org.apache.karaf.features/framework/4.0.x/xml/features • mvn:org.apache.karaf.features/spring/4.0.x/xml/features • mvn:org.apache.karaf.features/standard/4.0.x/xml/features

支持任意数据库 • 数据库连接数占用高 • 仅支持单一开发语言 • 性能损耗低 • 无中心化 代理端 • 仅支持单一数据库 • 数据库连接数占用低 • 支持任意开发语言 • 性能损耗高JDBC Proxy Sidecar 数据库 任意 单一 单一 连接数 高 低 高 异构语言 仅Java 任意 任意 性能 损耗低 损耗略高 损耗低 无中心化 是 否 是 静态入口 无 有 无 无 Sidecar的优势Database Mesh架构图Sharding-Sphere 核心功能 数据分片 分布式事务 数据库治理 弹性伸缩 管控界面 实现方案 Sharding-JDBC Sharding-Proxy Sharding-Sidecar Sharding -Sphere 云原生 无中心 零侵入Sharding-Sphere：数据分片Sharding-Sphere：分布 业务代码 Sharding- Sphere 应用 应用 注册中心Sharding-Sphere：APM演进线路图 JDBC + 数据分片 版本：1.X 数据库治理 版本：2.X Proxy 版本：3.0.X 分布式事务 版本：3.1.X Sidecar 版本：4.0.X 多数据副本 版本：4.1.X 弹性伸缩 版本：4.2.X 已完成 图例： 进行中 规划中联合社区打造开源