🗺️ MapReduce Design Patterns🗺️ MapReduce设计模式What is a MapReduce Design Pattern?什么是MapReduce设计模式？ “A MapReduce design pattern is a template for solving a common and general data manipulation problem with MapReduce.” “MapReduce设计模式是使用MapReduce解决通用数据处理问题的模板。” General Approach: It is not specific to...

🖥️ RPC Protocol & Performance Optimization🖥️ RPC协议与性能优化📜 RPC Definition📜 RPC定义 “Remote Procedure calls allow one computer program to call subroutines of another computer remotely, without worrying about the underlying network communication...

🗂️ HDFS Distributed File System🗂️ HDFS 分布式文件系统Overview of HDFSHDFS 概述 “Hadoop Distributed File System (HDFS) is a Distributed File System, built on the idea of one write, many reads, high fault tolerance, and high throughput.” “Hadoop 分布式文件系统 (HDFS) 是一个分布式文件系统，基于一次写入、多次读取、高容错性和高吞吐量的理念构建。” Key...

内存的基础知识 什么是内存，有何作用 存储单元、内存地址的概念和联系 内存地址从0开始，每个地址对应一个存储单元 按字节编址vs按字编址 按字节编址：每个存储单元大小为==1字节==，即1B 按字编址：每个存储单元大小为1个字。如果字长为16，则每个字的大小为16个二进制位 进程运行的基本原理 指令的工作原理 操作码+若干参数（可能包含地址参数） 逻辑地址（相对地址）vs...

🧩 Redis Architecture & Setup🧩 Redis 架构与设置💡 Introduction to Redis💡 Redis 简介 Redis is a NoSQL key-value database, functioning as an in-memory data store. Redis 是一个 NoSQL 键值数据库，作为一个内存数据存储。 It allows fast access to various data structures (strings, lists, sets, etc.) using unique...

🗄️ MongoDB Overview🗄️ MongoDB 概述 MongoDB: A leading NoSQL database known for flexibility, scalability, and support for unstructured data. MongoDB: 一种领先的 NoSQL 数据库，以其灵活性、可伸缩性和对非结构化数据的支持而闻名。 ⚙️ Administration⚙️ 管理 Key Responsibilities: 主要职责: Installation: Set up MongoDB on cloud infrastructure. 安装:...

📊 MongoDB Aggregation Framework📊 MongoDB 聚合框架 Purpose: Enables complex data analysis and transformation similar to SQL’s GROUP BY and JOIN. 目的：实现复杂的数据分析和转换，类似于 SQL 的 GROUP BY 和 JOIN。 Pipeline Approach: Data flows through multiple stages, each performing a specific...

🗂️ Working with MongoDB Indexes🗂️ 使用 MongoDB 索引📚 Overview of Indexes📚 索引概述 Definition: A database index functions like a book’s index, allowing faster query results by referencing an ordered list instead of scanning the entire dataset. 定义：数据库索引的功能类似于书的索引，通过引用有序列表而不是扫描整个数据集来加快查询结果。 Collection...

📚 Working with MongoDB📚 使用 MongoDB🗂️ Schema Design🗂️ 模式设计 Schemas provide a blueprint for data organization and storage. 模式为数据组织和存储提供了蓝图。 MongoDB is schema-less but using schemas can enhance: MongoDB 是无模式的，但使用模式可以增强： Consistency and Data Integrity: Ensures uniformity across documents in a...