Mysql Db Size

MySQL optimization is very important. The most common and most needed optimization is limit. 　　The limit of MySQL brings great convenience to paging, but when the amount of data is large, the performance of limit is reduced dramatically. The same is 10 data select * FROM Yanxue8_visit limit 10000,10 and select * from Yanxue8_visit limit 0,10 is not a quantitative level ...

As the most popular open source database, MySQL is widely used in Web applications and other small and medium-sized projects. However, in many large IT companies, MySQL has gradually deviated from the original open source version after being highly optimized and customized, more like a branch, such as the Webscalesql of Facebook, which was not long ago open source. 　　Recently, Mr. Xiong has published a blog post, from the perspective of large-scale web site architecture development of the changes in MySQL application, here for you to share. This article mainly describes the different and ...

In the PHP tutorial +mysql Tutorial Database Tutorial in the paging code than the previous ASP tutorials, the ASP.net tutorial is relatively easy, because MySQL support limit,0,n so that you can easily and quickly get the records to read, so let's look at the instance function  GetPage ($talbe, $choose, $url) {global $page, $db, $sortname; $query = $db->quer ...

StatefulSet problem created in K8s: Pod created using Deployment is stateless, when hanging in the Volume, if the Pod is hung, Replication Controller will run one to ensure availability, but because it is stateless, Pod Hanging up when the relationship with the previous Volume has been disconnected, the new Pod can not find the previous Pod. But for users, they are not aware of the underlying pods, but when the pods hang up ...

Today to introduce six more useful MySQL SQL statements, probably many people through PHP to achieve these functions. 　　1. Calculate the number of years you want to figure out how old this person is by birthdays. 　　SELECT Date_format (From_days to_days (now ())-To_days (@dateofbirth)), '%Y ' + 0; 2. Two time difference to obtain two datetime value difference. Suppose dt ...

PHP connection MySQL database 10. 　　PHP's biggest feature is the ability to manipulate the database is particularly powerful, PHP provides a variety of database support. With PHP you can easily connect to the database, request the data and display it in your Web site, or even modify the data in the database. In this section we mainly in the Internet with PHP to use most of the MySQL database as an example, to introduce the relevant MySQL database operation functions and database basic operation and other aspects of knowledge. In the MySQL database, ...

Pinterest has maintained an exponential growth that will be doubled every 1.5 months. In two years, they achieved PV from 0 to tens of billions of, from the beginning of the two founder plus an engineer to now more than 40 engineers, from a small MySQL server to 180 web Enigne, 240 API Enigne, 88 MySQL DB (Cc2.8xlarge, each DB will be configured with a slave node), 110 Redis instance and 200 Mmecach ...

43 Free cloud computing services, the cloud computing integrated development environment, source code management, problem tracking, cloud database, CMS, payment gateway, code hosting, load testing, monitoring, help and web analytics, 11 areas of free cloud computing technology summarized. Since March, the Xeround team has been brainstorming to present a free cloud computing technology "feast" for application developers-listing 43 cloud computing services that make it easier for programmers to develop applications and, more importantly, free! All they do is release your IT resources ...

Social media, E-commerce, mobile communications, and machine-machine data exchange make terabytes or even petabytes of data that the enterprise IT department must store and process.   Mastering fragmentation best practices is a very important step in the cloud planning process when users process data for cloud computing databases. Fragmentation is the process of splitting a table into a manageable size disk file. Some highly resilient key-value data stores, such as Amazon simple DB, Google App engine ...

MongoDB company formerly known as 10gen, founded in 2007, in 2013 received a sum of 231 million U.S. dollars in financing, the company's market value has been increased to 1 billion U.S. dollar level, this height is well-known open source company Red Hat (founded in 1993) 20 's struggle results. High-performance, easy to expand has been the foothold of the MongoDB, while the specification of documents and interfaces to make it more popular with users, this point from the analysis of the results of Db-engines's score is not difficult to see-just 1 years, MongoDB finished the 7th ...