Ha Mysql Cluster

Today's world is a large data age of the information world, our life, whether life, work, learning are inseparable from the support of information systems. The database is the place behind the information system for saving and processing the final result. 　　Therefore, the database system becomes particularly important, which means that if the database is facing problems, it means that the entire application system will also face challenges, resulting in serious losses and consequences. Now the word "Big Data age" has become very popular, although it is unclear how the concept landed. But what is certain is that as the internet of things 、...

Cloudera's location is bringing big Data to the Enterprise with Hadoop Cloudera in order to standardize the configuration of Hadoop, you can help the enterprise install, configure, Run Hadoop to achieve large-scale enterprise data processing and analysis. Since it is for enterprise use, Cloudera's software configuration is not to use the latest Hadoop 0.20, but the use of Hadoop 0.18.3-12.clou ...

SQL and NoSQL Hybrid database solutions that are compatible with many SQL applications while providing NoSQL scalability. Xeround provides such services in the cloud, including a free version. 　　Other programmes include JDBC-driven database.com, NuoDB, http://www.aliyun.com/zixun/aggregation/13932.html ">clustrix and Voltdb." Xero ...

Opennebula:what ' snewin5.4 Chinese version. Opennebula 5.4 (this version, named Medusa, the ogre in Ancient Greek mythology) is the third version of the Opennebula 5 series. As we maintain a high level of attention to the needs of the community, we also devote a great deal of effort to enhancing the key functional points described in the 5.2 continuity plan. In general, almost every Opennebula component is focused on usability and functionality enhancements, and reduces API changes to a micro ...

OpenStack Object Storage (Swift) is one of the subprojects of the OpenStack Open source Cloud project, known as Object storage, which provides powerful extensibility, redundancy, and durability. This article will describe swift in terms of architecture, principles, and practices. Swift is not a file system or a real-time data storage system, which is called object storage and is used for long-term storage of permanent types of static data that can be retrieved, adjusted, and updated as necessary. Examples of data types that are best suited for storage are virtual machine mirroring, picture saving ...

"Guide" Xu Hanbin has been in Alibaba and Tencent engaged in more than 4 years of technical research and development work, responsible for the daily request over billion web system upgrades and refactoring, at present in Xiaoman technology entrepreneurship, engaged in SaaS service technology construction. The electric dealer's second kill and buys, to us, is not a strange thing. However, from a technical standpoint, this is a great test for the web system. When a web system receives tens or even more requests in a second, system optimization and stability are critical. This time we will focus on the second kill and snapping of the technology implementation and ...

Whether it is a virtual machine crash or a host error, the High Availability Virtualization (HA) utility guarantees that the virtual machines that are wrong can be restarted automatically. 　　These HA applications have created unrealistic expectations for http://www.aliyun.com/zixun/aggregation/7155.html > Developers and server Administrators. The server management team is beginning to believe that they can apply HA tools to a wide variety of enterprise casing programs, but recently brought by the mobility of virtual machines between data centers ...

Basically are in group discussion, when others ask the introductory questions, later thought of new problems to add in. 　　But the problem of getting started is also very important, the understanding of the principle determines the degree of learning can be in-depth. 　　Hadoop is not discussed in this article, only peripheral software is introduced. 　　Hive: This is the most software I've ever asked, and it's also the highest utilization rate around Hadoop. 　　What the hell is hive? How to strictly define hive is really not too easy, usually for non-Hadoop professionals ...

In 2017, the double eleven refreshed the record again. The transaction created a peak of 325,000 pens/second and a peak payment of 256,000 pens/second. Such transactions and payment records will form a real-time order feed data stream, which will be imported into the active service system of the data operation platform.

With the advent of the software definition era, business is growing, data volume and the pressure of the system also follow. From the traditional relational database to the dedicated data warehouse, from the minicomputer to the current popular x86 server, the technical architecture has changed greatly. Users need to focus on not just a single server or storage node, but the entire IT system, including the performance, security, and reliability of the overall system architecture. According to traditional concept, users may be more inclined to choose minicomputer when they build enterprise data center, and now the x86 server is from performance, reliability and security ...