youtube sub list

Article source : Wuhan Octave Cat Technology Co., Ltd. www.bayinmao.com. Problem:Phpcms v9 List page How to call sub-columns such as: Home > Products > Product type a> product Type A11On the list page, in product Type A, include product type a1, product type a2, product type A3How to call the category on the list pageP

1. Reasons for the Sub-list (sharding)在网站初期，为了节约资源，常常部署单点（单一服务器）mysql作为数据存储。随着网站业务量增大，机器的性能有限，单点mysql的I/O性能瓶颈马上达到高潮。?为了突破单节点I/O的性能，聪明的架构师开始引入多节点，这就是所谓分库。如果说单节点是单线程串行计算，那么多节点就是多线程并行计算。多节?点的mysql服务借鉴了并行的思想，将原本对单点的操作分散到N台机器上，提升的效果明显。?有可能我们的网站发展很迅速，每天的注册用户很多，然而这些注册用户都是存放在一张user表上的，这张表越来越大，每一次insert操作需要维护的?成本也非常高。于是乎，就开始将user表拆分成user_1,user_2...等表，这就是所谓分表。2. The main idea of segmentation (sharding)顾名思义，切分就是指：按照一

Subclass of 1:list (master)(1) Sub-class features of listArrayList:The underlying data structure is a number of groups, check 迿 fast, and delete slowlyThread insecure, high efficiencyVector:The underlying data structure is a number of groups, query fast, and delete slowlyThread-safe, low-efficiencyLinkedList:The underlying data knot PO is linked list, query slow,