Product Description

<p><span style="font-family:Microsoft Yahei">Supports PostgreSQL engine, currently compatible with PostgreSQL version 9.6. The default deployment of architectures, both of the main and standby, provide a full set of solutions of disaster recovery, backup, recovery, monitoring and other needs. According to practices, can provide a variety of packages for custom consumption as well as one-stop database solutions.</span></p>

Priority

<p><span style="font-family:Microsoft Yahei"><strong>High Security: </strong>RDS can safeguard your data security under accessing control policy, protection of multi-layer firewall function. Provides SQL audit function, controls and records all of the information of access source and access behavior.</span></p> <p><span style="font-family:Microsoft Yahei"><strong>High Reliability: </strong>To meet the financial system operation and requirements for maintenance, RDS provides three places and two disaster recovery services, hot standby architecture and automatic multi-backup mechanism by default.</span></p> <p><span style="font-family:Microsoft Yahei"><strong>High Performance: </strong>Based on many years of financial system management experience and production practices, RDS provides the best performance parameter configuration; it can also fit in user&#39;s actual business environment flexibly.</span></p> <p><span style="font-family:Microsoft Yahei"><strong>Ease to Use: </strong>Increasing, deleting, restarting, backup, expanding and other management operations of RDS instance can be operated on the console, and we provide multi-dimensional monitoring data of performance for users to analyze the application.</span></p>

Restrictions

<p>1.The database service can only be accessed using the domain name provided by the product. Otherwise, some services, such as failover, will be downgraded.<br /> 2.Read only instance does not support long transactions.<br /> 3.The East China region currently does not support access to DB by BMS.<br /> 4.Switching the billing method from pay-per-use to monthly subscription is currently not allowed.<br /> 5.Only cloud ECSs in the tenant zone are allow to access DB instances, and extranets are not allowed.<br /> 6.The instance will suffer transient interruption during version upgrading, so please perform the upgrade during a maintainable period and ensure that your application has an automatic reconnection mechanism.<br /> 7.During the change of the capacity configuration, the current instance and the corresponding read only instance will suffer transient interruption.<br /> 8.The database service will suffer transient interruption when SSL encryption is enabled.<br /> 9.Modified parameters can take effect only after restarting the instance.</p>

Related Terms and Instructions for Use

<p><span style="font-family:Microsoft Yahei"><strong>Region</strong></span></p> <p><span style="font-family:Microsoft Yahei">The region consists of multiple physical data centers, such as East China 1 and Southern China 1.</span></p> <p><span style="font-family:Microsoft Yahei"><strong>Availability Zone</strong></span></p> <p><span style="font-family:Microsoft Yahei">Availability zones are physical areas where the power and network are independent of each other in the same region. The physical distance between two availability zones is longer than 20 kilometers, such as EC1-A, SC1-B. In the same region, you can choose any available zone to design your local standby database service.</span></p> <p><span style="font-family:Microsoft Yahei"><strong>Master Node</strong></span></p> <p><span style="font-family:Microsoft Yahei">Provide RDS instance connected by application servers, strongly recommend this instance and applications on ECS are in the same available zone.</span></p> <p><span style="font-family:Microsoft Yahei"><strong>Local Slave Node</strong></span></p> <p><span style="font-family:Microsoft Yahei">When the available zone of master node is selected, the platform can recommend the most appropriate available zone for local slave node. You could also select an appropriate available zone according to the application design.</span></p> <p><span style="font-family:Microsoft Yahei"><strong>Slave Node</strong></span></p> <p><span style="font-family:Microsoft Yahei">Slave node could be created in availability zones whether in the same region with master node or not. There is one and only one local slave node, and each remote region could create only one remote salve node. Data synchronization between master node and slave node may be delayed.</span></p> <p><span style="font-family:Microsoft Yahei"><strong>Read Only Node</strong></span></p> <p><span style="font-family:Microsoft Yahei">You could create read only node to separate reading and writing according to the application design. Each remote availability zone could create only one remote read only node. Data synchronization between master node and read only node maybe be delayed. Read only node could do the following operations independently from the master node, such as upgrading version and computing capacity, restarting, setting white lists and releasing. The version of read only node must be greater than or equal to the master node.</span></p> <p><span style="font-family:Microsoft Yahei"><strong>White List Management Group</strong></span></p> <p><span style="font-family:Microsoft Yahei">The management granularity of white list for PostgreSQL is three-dimensional: database, user and VPC subnet. It set up the access policy to manage who can access the database data.</span></p>
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