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Use of sessionStorge The sessionStorage property allows you to access a session Storage object. It is similar to localStorage, except that the data stored in localStorage has no expiration time setting, and the data stored in sessionStorage will be cleared at the end of the page session. The page session is maintained while the browser is open, ...

What is MyCat? Look at the introduction on the official website. A Completely Open Source Large Database Cluster for Enterprise Application Development Enhanced database supporting transactions, ACID, and MySQL alternatives An enterprise-level database that can be considered a MySQL cluster to replace the expensive Oracle cluster ...

Based on MySQL master-slave replication, this paper uses mycat to realize read-write separation. The role of mycat in applications can be seen in the following figure: mycat allows programmers to only care about business code writing, without worrying about load balancing of back-end database cluster, separation of reading and writing, data ...

Original address: http://blog.csdn.net/Dreamcode/article/details/50401858 Full article download address: http://download.csdn.net/detail/dreamcode/9383516  Simply put, we can understand the horizontal segmentation of data as the segmentation of data rows, that is to say, some rows in the table are divided into one database, while some o ...