让我们来考虑这样一个简单却很典型的数据库在机场的应用实例:查询某次航班的所有旅客名单。这个操作所引发的的查询请求大致按如下方式被处理: 1、机场登机口的 PC 机(客户端)调用 API 与 DBMS 的客户端通信管理器(Client Communications Manager)建立网络连接。在一些情况下,客户端直接通过... ...
MyBatis tutorial 环境搭建+日志打印 初步使用 我们知道,jdbc太恶心了,所以出现了mybatis。mybatis的优势,在于resultMap和动态sql,我们会一一讲到。 环境搭建+日志打印 项目基于maven,maven的依赖: <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http:///POM/4.0.0" xmlns:xsi="http://www.w3....
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redis 127.0.0.1:6379> CONFIG SET CONFIG_SETTING_NAME NEW_CONFIG_VALUE Example redis 127.0.0.1:6379> CONFIG SET loglevel "notice" OK redis 127.0.0.1:6379> CONFIG GET loglevel 1) "loglevel" 2) "notice" Print Page Previous Next Advertisements...
Redis-shake is a tool for synchronizing data between two redis databases. Redis-shake是一个用于在两个redis之间同步数据的工具,满足用户非常灵活的同步、迁移需求。 - GitHub - dbms-ops/RedisShake: Redis-shake is a tool for synchronizing data between two redi
Graph databases explained There are plenty of models for processing and storing large quantities of data. However, conventional databases with their rigid tabular structures quickly reach their limits when modeling complex relationships. So-called ‘graph databases’ have proven themselves to be… ...