CourseElementary54125

Course Introduction："HTML5 From Beginner to Mastery Tutorial" introduces in detail that HTML5 has added a lot of new content based on HTML, with more functions and more dazzling effects.

CourseElementary26927

Course Introduction："Javascript Basics Tutorial" will take you to quickly learn the basic knowledge of javascript and explain it through examples, so that you can better understand the javascript scripting language.

CourseElementary30795

Course Introduction：This tutorial will start from the basics and does not require you to have any programming knowledge. The "HTML Tutorial" contains our knowledge of HTML5, truly achieving a comprehensive learning of HTML.

CourseElementary24069

Course Introduction："HTML5 Quick Self-Study Tutorial" is suitable for zero-based entry learning of HTML5. HTML5 is the fifth version of HTML development. With the support of browser technology, it has also begun to be widely used. H5 will become the new standard for WEB development. This course will provide readers with Explain all the core features of HTML5.

CourseElementary90672

Course Introduction："JavaScript Elementary Tutorial" is an introductory course to JavaScript, designed to let everyone know and understand the common knowledge of JavaScript.

Course Introduction：HBase is a Hadoop-based distributed storage system designed to store and process large-scale structured data. In order to optimize its read and write performance, HBase provides a variety of caching mechanisms, which can improve query efficiency and reduce read and write delays through reasonable configuration. This article will introduce HBase caching technology and how to configure it. HBase cache types HBase provides two basic cache mechanisms: block cache (BlockCache) and MemStore cache (also called write cache). The block cache is in

2023-06-20 comment 01056

Course Introduction：HBase writes quickly but reads slowly. The read time of HBase is usually a few milliseconds, while the read time of Redis is usually tens of microseconds. The performance difference is very big. Both HBase and Redis support KV type. But Redis supports richer types such as List and Set.

2019-06-06 comment 06339

Course Introduction：hbase relies on "Zookeeper" to provide a message communication mechanism. ZooKeeper is a distributed, open source distributed application coordination service; as the cluster coordinator of hbase, zookeeper can coordinate and handle hbase activities.

2020-11-12 comment 08635

Course Introduction：The difference between HBase and Redis: 1. HBase is fast to write but slow to read. The reading time of HBase is usually a few milliseconds, while the reading time of Redis is usually tens of microseconds. The performance difference is very big. 2. Both HBase and Redis support KV type. But Redis supports richer types such as List and Set.

2019-06-17 comment 06820

Course Introduction：hbase relies on "HDFS" to store underlying data. HBase uses Hadoop HDFS as its file storage system to provide HBase with high-reliability underlying storage support; HDFS has high fault tolerance and is designed to be deployed on low-cost hardware.

2020-11-17 comment 014796