你是一个程序员， 老板要你做个游戏平台，支撑十多亿游戏用户数据的写入和存储。 游戏用户包含多种字段，比如id, 装备、是否参与过节日活动等，功能不断迭代，需要支持扩展各种属性字段以及多维度查询。比如没参加过情人节活动的剑士有哪些？ 那么问题 ...

01凌晨三点，你的手机又响了连接数飙升，主从延迟告警，慢查询堆了一屏。打开电脑，翻日志、查监控、分析执行计划——等忙完，天亮了。这是无数 DBA 的日常。数据库实例从几十台涨到成百上千台，MySQL 要看缓冲池命中率，Redis ...

【IT168 技术】MySQL是关系型数据库中的明星，MongoDB是文档型数据库中的翘楚。下面通过一个设计实例对比一下二者：假设我们正在维护一个手机产品库，里面除了包含手机的名称，品牌等基本信息，还包含了待机时间，外观设计等参数信息，应该如何存取数据呢?

在高精度定位、自动驾驶、无人机、测绘与机器人等领域，RTK（实时动态差分）是实现厘米级定位的核心技术。而NTRIP作为互联网环境下传输 RTCM 差分数据的事实标准，承担着基准站与流动站之间差分数据可靠传输的关键作用。一、什么是NTRIP？NTRIP（Networked ...

During the dot-com bubble in the 1990s, one common software stack for web applications was LAMP, which originally stood for Linux (OS), Apache (web server), MySQL (relational database), and PHP ...

Craigslist handles a boatload of postings every day, but as big as that load is, their daily incoming traffic is not enough to sink a relational vessel. However, managing their archive of postings was ...

Percona, which provides MySQL and MongoDB solutions and services, has introduced a bundle of updated products for MongoDB and MySQL environments. The bundle includes PerconaServer for MongoDB 3.4, ...

eWEEK content and product recommendations are editorially independent. We may make money when you click on links to our partners. Learn More. Open-source server specialist Percona is branching out yet ...

Some especially significant implications for Web developers can be found in a new study by research firm Ovum that measured the sentiment about Big Data vendors in 2012 Twitter posts. While the study ...