Live notice
2020 March 26 15: 00-16: 30
We invite you to witness
Cloud database SQL Server version 2019 blockbuster release
To enhance the cost-effective and database capabilities
RDS SQL Server 2019 not only adds new features engine, also provides multi-form, features high security, high performance and high intelligence.
01, SQL Server 2019 New Features
From the SQL Server 2019 version, there is an interesting thing is to define the database engine as a platform to provide a development language, data types, local or cloud environments and operating system options, then we can from which to enjoy the technological innovation it?
Big data clusters and virtualized data
SQL Server 2019 provides a scalable big data solutions, users can deploy SQL Server, Spark and running on Kubernetes HDFS container scalable cluster. Transact-SQL can also Spark or read, write, and large data.
Easily incorporate big data and relational data analysis through high-value high-capacity, query external data sources. The data for AI, machine learning and other analysis tasks. There we are familiar with SQL Server Always On Availability Group all database technology to provide high availability and disaster recovery.
Data virtualization by PolyBase, using an external table from an external SQL Server, Oracle, Teradata, MongoDB and ODBC data source query data. Users can isolate a variety of data sources in the growing data set components. To handle large amounts of data, including machine learning and AI functions take advantage of SQL Server 2019, including big data clusters provide a complete environment.
Enhanced performance and intelligent
In SQL Server 2019 also provides a rich performance and intelligent features, intelligent query processing, provide feedback line mode memory grant, batch mode on-line storage, the scalar UDF inline table variable delay compiling, APPROX_COUNT_DISTINCT be approximate query processing characteristics.
By intelligent query processing, can be found the key to the parallel workloads in large-scale operation, its performance has been improved. Memory databases, the new hybrid buffer pools, optimization TempDB metadata memory, support for memory OLTP database snapshots.
Engine performance, increased or improved the following features:
OPTIMIZE_FOR_SEQUENTIAL_KEY, forced to fast forward and static cursors, reduce the recompilation of the workload, PFS concurrent updates, planned migration program supporting role, indirect checkpoints scalability and so on.
Probably most of us have a sense of the body are two characteristics:
OPTIMIZE_FOR_SEQUENTIAL_KEY PFS and concurrent updates.
OPTIMIZE_FOR_SEQUENTIAL_KEY enable high index help improve throughput concurrent insert, for inserting an index prone last contention, such as a key index order (e.g., identity column, sequence or date / time column), the scene will be high concurrency encountered.
Followed by concurrent PFS Update, page latch contention on the PFS page is usually associated with TempDB, but there are many concurrent object is assigned a thread, it may also occur in the user database. This improvement has changed the way the use of PFS to manage concurrent updates, so you can share in the next latch (but not exclusively latch) to update them.
Accelerate database recovery feature can speed up database recovery (ADR) to reduce recovery time after restart or long-running transaction is rolled back, the recommended option is enabled by default.
Mission-critical security
SQL Server 2019 security update several important characteristics with safety Enclave's Always Encrypted, certificate management SQL Server Configuration Manager, enhanced data discovery and classification, SQL Server audit.
Database Security recent accidents really heartbreaking, safety is no small matter. Security is a comprehensive, systematic prevention and control and governance, not a single one characteristic can be resolved, in recent years, and this is a cloud database service provider core competitiveness.
Support tripartite platform
Beginning with SQL Server 2017 has supported Linux platform also supports Docker containers, but the function is relatively weak, with respect to the Windows platform, database characteristics very different.
SQL Server 2019 adds Kubernetes deployment architecture. The gradual improvement of engine characteristics, the newly added replication (Replication), Microsoft Distributed Transaction Coordinator (MSDTC), OpenLDAP support third-party providers AD, machine learning services on Linux, TempDB improvements, PolyBase on Linux, change data capture (CDC). Differences Winodws platform getting smaller and smaller. I believe the near future, there will be a new product based on the shape of the new architecture of Ali cloud cloud database, adapt to changing user needs.
02, RDS SQL Server 2019 features
Rich product form
Ali and so the database provides a wealth of product form, if your business is used to test and verify and non-core business, you can select the RDS SQL Server Fundamentals. If the core business of high-availability version can be selected depending on the degree of importance, high availability version offers exclusive, general-purpose and share type.
If your business is very central and very high degree of concurrency, you can select the RDS SQL Server Cluster Edition, read and write separation technique based on SQL Server Alwayson, read a copy of the maximum support seven instances to achieve load balancing.
Examples of life-cycle management and flexibility of the elastic properties of resources like water, electricity, like all of these forms, which means that use, convenient and quick to help customers achieve rapid deployment and development of business!
Multiple security features escort
RDS SQL Server 2012 and later provides disk encryption technology, users can use the built-in certificate encrypted disk, disk data protection level of safe and reliable control. In connection layer all versions have achieved access link encryption SSL, to prevent the risk of data leakage in the transport layer.
In the database engine layer, Enterprise Edition supports transparent database encryption (TDE), of course, also support other engine layer security mechanisms. RDS SQL Server also provides a database audit function, you can open the audit function in operation traceability who, what, when operating, such as what operating details.
RDS SQL Server cloud platform for all its operations also access the security audit platform. Meanwhile RDS SQL Server inherits Ali cloud public security system. All of these mechanisms can be a good strategy to protect the security of user data.
A full backup and restore mechanism.
Ali cloud RDS SQL Server is versatile backup and restore. Flexibility to choose the backup time and backup based on business. Database may be implemented full backup, differential backup, and a database backup database log, log backup may be selected according to the particle size of the backup service. Examples of cloning whole can be achieved, by cloning a single database backup and restore mechanism. By between instances backup and restore, replicate the database instance.
The backup and restore support backup sets and restores any point of time. All of these are implemented based backup and restore of data do not fall disk embodiment, to reduce the IO overhead instance, reduce the impact on performance when the instance backup and restore.
Experience on cloud-friendly data
The user database cloud is a very important thing. Ali cloud RDS SQL Server provides a logical and physical transmission of transmission scheme. DTS logical transport can use the tool to complete, easy to use.
Physical transmission is also achieved by the original backup, the user himself to the OSS database backup, the console access authorization by the RDS, subsequent automate all the processes, does not require complicated operation of the user intervention. Support full amount of the cloud, the cloud also supports incremental backups to reduce user downtime window. More specific information, refer to the following links:
The full backup data in the cloud SQL Server 2012 and above:
https://help.aliyun.com/document_detail/68310.html
cloud SQL Server 2012 and above the incremental backup data:
https://help.aliyun.com/ document_detail / 71614.html
cloud on the SQL Server database instance level:
https://help.aliyun.com/document_detail/72458.html
Intelligent operation and maintenance
As a PaaS cloud database platform, easy operation and maintenance user how their database is very important. RDS SQL Server in addition to the traditional alarm and performance monitoring features also provides enterprise-class database management, diagnosis and analysis platform that Ali cloud RDS SQL Server CloudDBA and Performance Insight.
By CloudDBA can manage space and trend analysis of the database, the database may be missing index analysis, statistics, analysis, index usage, and so on. In particular, it can facilitate easier to analyze and solve the deadlock problem. As shown below:
Performance Insight (Performance Insight) focus on the user database instance performance tuning, load monitoring and correlation analysis tool to help users simple and intuitive way to quickly assess the database load, waiting for the source of resources and the corresponding SQL query in order to guide users when, where, what action to take for data to optimize performance.
About RDS SQL Server Performance Insight, point of view I
Live notice
2020 March 26 15: 00-16: 00
We invite you to witness
Cloud database SQL Server version 2019 blockbuster release
To enhance the cost-effective and database capabilities