Service Mesh的延伸 之论道Database Mesh 分享人：张亮 日期：2018年07月25日Service Mesh风头正劲Service Mesh产品多样化Service Mesh的优势 云原生 零入侵 可观察性 面向运维服务化之后，数据库怎么办？ 服务 • 无状态 • 根据规则路由 • 业务方处理事务 数据库 • 有状态 • 根据SQL路由 • 数据库自动处理事务数据库的进化趋势 • SQL • ACID+BASE • 分布式 NewSQLNewSQL的分类 New Architecture Transparent Sharding Middleware Database-as-a-Service What's Really New with NewSQL?数据库中间层的优势 系统 •事务 运维 • DBA 开发 • SQL数据库中间层应具备的能力 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 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

classification  IMDB Movie reviews sentiment classification  Reuters newswire topics classification  MNIST database of handwritten digits  Fashion-MNIST database of fashion articles   Boston housing price regression dataset Let us use the MNIST database of handwritten digits (or minst) as our input. minst is a collection of 60,000, 28x28 grayscale images. It contains 10 digits find the sentiment analysis of the given text. Let us create a LSTM model to analyze the IMDB movie reviews and find its positive/negative sentiment. The model for the sequence analysis can be represented

of when the lease expires/expired, in seconds since 1970-01-01 UTC. Queries the persistent lease database by MAC address. This is handy if the host wants to connect to a server running inside a VM on a be reported: • VBOX_E_OBJECT_NOT_FOUND: If MAC address not in the database. • VBOX_E_FILE_ERROR: If not able to read the lease database file. 5.32.3 getConfig IDHCPConfig IDHCPServer::getConfig( [in] autostartDatabasePath (read/write) wstring ISystemProperties::autostartDatabasePath The path to the autostart database. Depending on the host this might be a filesystem path or something else. 5.173.1.28 defaultAdditionsISO

of when the lease expires/expired, in seconds since 1970-01-01 UTC. Queries the persistent lease database by MAC address. This is handy if the host wants to connect to a server running inside a VM on a be reported: • VBOX_E_OBJECT_NOT_FOUND: If MAC address not in the database. • VBOX_E_FILE_ERROR: If not able to read the lease database file. 5.32.3 getConfig IDHCPConfig IDHCPServer::getConfig( [in] autostartDatabasePath (read/write) wstring ISystemProperties::autostartDatabasePath The path to the autostart database. Depending on the host this might be a filesystem path or something else. 5.173.1.28 defaultAdditionsISO

expires/expired, in seconds since 1970-01-01 UTC. cv Classes (interfaces) Queries the persistent lease database by MAC address. This is handy if the host wants to connect to a server running inside a VM on a be reported: • VBOX_E_OBJECT_NOT_FOUND: If MAC address not in the database. • VBOX_E_FILE_ERROR: If not able to read the lease database file. 51.3 getConfig IDHCPConfig IDHCPServer::getConfig( [in] DHCPConfigScope autostartDatabasePath (read/write) wstring ISystemProperties::autostartDatabasePath The path to the autostart database. Depending on the host this might be a filesystem path or something else. 204.1.29 defaultAdditionsISO

expires/expired, in seconds since 1970-01-01 UTC. 79 5 Classes (interfaces) Queries the persistent lease database by MAC address. This is handy if the host wants to connect to a server running inside a VM on a be reported: • VBOX_E_OBJECT_NOT_FOUND: If MAC address not in the database. • VBOX_E_FILE_ERROR: If not able to read the lease database file. 5.40.3 getConfig IDHCPConfig IDHCPServer::getConfig( [in] autostartDatabasePath (read/write) wstring ISystemProperties::autostartDatabasePath The path to the autostart database. Depending on the host this might be a filesystem path or something else. 5.194.1.29 defaultAdditionsISO

expires/expired, in seconds since 1970-01-01 UTC. 105 5 Classes (interfaces) Queries the persistent lease database by MAC address. This is handy if the host wants to connect to a server running inside a VM on a be reported: • VBOX_E_OBJECT_NOT_FOUND: If MAC address not in the database. • VBOX_E_FILE_ERROR: If not able to read the lease database file. 5.40.3 getConfig IDHCPConfig IDHCPServer::getConfig( [in] autostartDatabasePath (read/write) wstring ISystemProperties::autostartDatabasePath The path to the autostart database. Depending on the host this might be a filesystem path or something else. 5.191.1.29 defaultAdditionsISO

expires/expired, in seconds since 1970-01-01 UTC. cv Classes (interfaces) Queries the persistent lease database by MAC address. This is handy if the host wants to connect to a server running inside a VM on a be reported: • VBOX_E_OBJECT_NOT_FOUND: If MAC address not in the database. • VBOX_E_FILE_ERROR: If not able to read the lease database file. 51.3 getConfig IDHCPConfig IDHCPServer::getConfig( [in] DHCPConfigScope autostartDatabasePath (read/write) wstring ISystemProperties::autostartDatabasePath The path to the autostart database. Depending on the host this might be a filesystem path or something else. 204.1.29 defaultAdditionsISO

autostartDatabasePath (read/write) wstring ISystemProperties::autostartDatabasePath The path to the autostart database. Depending on the host this might be a filesystem path or something else. 5.135.1.28 defaultAdditionsISO one is taken from an internal database or an empty string if none is found. 1: The product string, if the device doesn’t expose the ID one is taken from an internal database or an empty string if none is mouse events to the VM. 8.2 RDPWeb reference RDPWeb consists of two required components: • Flash movie RDPClientUI.swf • JavaScript helpers webclient.js The VirtualBox SDK contains sample HTML code including:

autostartDatabasePath (read/write) wstring ISystemProperties::autostartDatabasePath The path to the autostart database. Depending on the host this might be a filesystem path or something else. 5.141.1.28 defaultAdditionsISO one is taken from an internal database or an empty string if none is found. 1: The product string, if the device doesn’t expose the ID one is taken from an internal database or an empty string if none is aspx Linux usually takes the TZ string from this table: https://en.wikipedia.org/wiki/List_of_tz_database_time_zones The default is currently UTC/GMT, but this may change to be same as the host later. TODO: