postgresql high availability

Every time you talk about the high availability of SQL Server, a lot of DBAs, especially SQL Server DBA, have a pain in their head: Because everyone thinks that SQL Server cannot or will be difficult to implement SQL Server. There are also a lot of DBA friends head a beat, give the answer "high availability is not Micr

11.1 High availability and Network Load Balancing11.1.1 Concept of high availabilityHigh Availability (High-availability) is a series of technology totals that reduce downtime and increase protection of business data.The following

Label:Original: Http://imysql.com/2015/09/14/solutions-of-mysql-ha.shtml?hmsr=toutiao.ioutm_medium=toutiao.ioutm_ Source=toutiao.io This topic is MySQL高可用方案选型 , this topic presumably has many classmates interest. High availability and corresponding downtime for a variety of high availability levels I don't have to sa

Label: The various high-availability scenarios for MySQL are mostly deployed on the basis of the following: Based on master-slave replication; Based on the Galera protocol; Based on the NDB engine; Based on middleware/proxy; Based on shared storage; Host-based high availability; Of t

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The reliability of the computer system is measured by the average time of no fault (MTTF), that is, the average time the computer system can run normally before a fault occurs. The higher the system reliability, the longer the average fault-free time. Maintainability is measured by the mean service time MTTR), that is, the average time it takes to repair and restore the system to normal after a fault occurs. The better the maintainability of the system, the shorter the average maintenance time.

High Availability of SQL ServerEvery time we talk about the high availability of SQL Server, many DBAs, especially SQL Server DBAs, feel a pain: Because we all think that SQL Server cannot or is difficult to implement SQL Server. There are also a lot of DBA friends with a head shot, giving the answer "isn't

High-availability architectures are basically standard for Internet services, both application services and database services need to be highly available. Although the Internet service is called 7 * 24-hour uninterrupted service, but there are some times when the service is not available, such as some time the Web page is not open, Baidu can not search or can not send micro-blog, hair micro-letter and so on

Article Title: implement high-availability services on Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. The high availability service is a hot topic in enterprise applications

Tags: impact no structure. com database remote failover domestic avoidance1. Overview When we consider the highly available architecture of the MySQL database, we mainly consider the following aspects: If the database is down or an unexpected outage, and so on, can restore the availability of the database as soon as possible to reduce downtime, to ensure that the business will not be interrupted due to database failure. Data for non-prim

Label:First, MySQLMySQL small high-availability architecture program: MySQL dual master, master-slave + keepalived master-slave automatic switching server resources: two PC server Advantages: Simple architecture, saving resources disadvantage: Unable to scale linearly, master-slave failure requires manual recovery of master-slave architectureMySQL medium high-

I. OverviewWhen we consider the high-availability architecture of the MySQL database, we mainly consider the following aspects: If the database is down or an unexpected outage, and so on, can restore the availability of the database as soon as possible to reduce downtime, to ensure that the business will not be interrupted due to database failure. Da

SQL Server High-availability scenarios Scenario One:asynchronous Mirror + AliasProgram IntroductionThe database server configures an asynchronous mirroring relationship, and the program client connection string configures the alias connection.1. Create an alias in the SQL Server client configuration, replacing the server name or IP address with an alias in the client's connection string settings.2. Write a

Tags: network server database Solution binaryMySQL database, as one of the most basic data storage services, has a very important position in the whole system, so it is understandable to ask for high availability. There are many solutions that can implement different SLAs (service level agreements) that ensure that the database server continues to be available in the event of hardware or software failure.Th

MySQL database, as one of the most basic data storage services, has a very important position in the whole system, so it is understandable to ask for high availability. There are many solutions that can implement different SLAs (service level agreements) that ensure that the database server continues to be available in the event of hardware or software failure.There are two main problems that

The physical machine outage virtual machine switches to another physical machine to continue running. If the virtual machine freezes, then the virtual machine is reconfigured with high availability.as we have learned before STP ( Spanning Tree Protocol ) also enables highly available clustersaspects of High availability implementation: (mainly divided into 4 area

Environment:1. Three servers have Windows cluster set upFor a WIN cluster, refer to: http://pxizhi.blog.51cto.com/5283742/15981462. And three servers are fully installed in SQL 2014 Enterprise Editionin the build A lways on High Availability Group before the Three server database instances need to Enable AlwaysOn availability groups feature1. To start an Always

1. OverviewWhen we consider the highly available architecture of the MySQL database, we mainly consider the following aspects: If the database is down or an unexpected outage, and so on, can restore the availability of the database as soon as possible to reduce downtime, to ensure that the business will not be interrupted due to database failure. Data for non-primary nodes that are used as backups, read replicas, and so on, should be in r

If you say Taoxin potter, high availability is even more important than high performance. Why?Because you optimize the performance of the system 10 times times, your boss may say: "Xiao Dong Ah, good job."However, if you are responsible for the module, Zooey will be down, hey, you know.Availability Metrics99%-----website year unavailable for less than 88 hours99.

DirectoryOpenstack-mitaka Overview of High AvailabilityOpenstack-mitaka High-availability environment initializationOpenstack-mitaka High-availability Mariadb-galera cluster deploymentOpenstack-mitaka High