我不构建数据库引擎，但搭建Web应用。每年我大约跑4-6个不同项目，所以我搭建了不少Web应用。我经历过有不同需求及不同的数据存储
免责声明：我不构建数据库引擎，但搭建Web应用。每年我大约跑4-6个不同项目，所以我搭建了不少Web应用。我经历过有不同需求及不同的数据存储需求的应用。我部署过你听说过或没听说过的的大部分数据存储。
我也有几次做出了错误的选择。这是一个关于其中一次的故事——原本我们为什么选择它，我们是如何发现它不合适，以及我们如何修复的。这一切都发生在一个开放源码的名为Diaspora的项目中。
Diaspora项目Diaspora 是一个有着悠久历史的分布式社交网络。早在2010年初，纽约大学四名大学生创建了一个Kickstarter视频，目的是募集10000美元，耗费一个夏天来构建一个替代Facebook的分布式项目。他们将它发送给朋友和家人，并希望有最好的结果。
但他们触到了痛处。当时正好有另一起关于Facebook的隐私丑闻，当尘埃落定，回到他们的Kickstarter项目时，他们已经从6400个不同的人那里筹集了超过200000美元，而同时这个软件项目，却连一行代码都还没有写出来。
Diaspora是第一个大大超越其目标的Kickstarter项目。其结局是，他们的项目新闻被刊登于纽约时报——但它变成了一个丑闻，，因为团队照片的背景黑板上面有一个肮脏的笑话，直到最终印刷都没有人注意到这一点。这可是刊登在纽约时报！这个事件的余波实际上是我第一次听说到这个项目。
他们在Kickstarter上成功的结果，是离开学校，来到San Francisco开始写代码。他们最后在我的办公室工作。那时我在Pivotal实验室工作，他们的一个哥哥也在那工作，所以Pivotal给他们提供了免费的办公空间、网络，当然，装有啤酒的冰箱。我白天和官方客户工作，下班后和他们一起玩，周末贡献代码。
他们最后在Pivotal待了两年多的时间。虽然只是在第一个暑假的结尾，他们已经有了一个最小化的，但已经可以使用（在某种意义上说）的一个分布式社交网络，以Ruby on Rails实现，后端用MongoDB。
这里有很多流行词汇，让我们把它分解来看。
“分布式社交网络”如果你看过《社交网络》，你就知道了所有你需要知道的关于Facebook的事。它是个web应用，它在一个单逻辑服务器上运行，它可以让你与朋友保持联系。一旦你登录，Diaspora的界面在结构上与Facebook很相似：
Diaspora用户界面的截图
在中间有个信息流，显示你所有朋友发布的信息，在边上有一些其他随机的基本没人关注过的东西。Diaspora和Facebook主要的技术差异在于对终端用户的不可见性：它是“分布的”部分。
MongoDB 的详细介绍：请点这里
MongoDB 的下载地址：请点这里
相关阅读：
MongoDB备份与恢复
CentOS编译安装MongoDB
CentOS 编译安装 MongoDB与mongoDB的php扩展
CentOS 6 使用 yum 安装MongoDB及服务器端配置
Ubuntu 13.04下安装MongoDB2.4.3
如何在MongoDB中建立新数据库和集合
MongoDB入门必读(概念与实战并重)
《MongoDB 权威指南》(MongoDB: The Definitive Guide)英文文字版[PDF]
Explain the InnoDB Buffer Pool and its importance for performance.Apr 19, 2025 am 12:24 AMInnoDBBufferPool reduces disk I/O by caching data and indexing pages, improving database performance. Its working principle includes: 1. Data reading: Read data from BufferPool; 2. Data writing: After modifying the data, write to BufferPool and refresh it to disk regularly; 3. Cache management: Use the LRU algorithm to manage cache pages; 4. Reading mechanism: Load adjacent data pages in advance. By sizing the BufferPool and using multiple instances, database performance can be optimized.
MySQL vs. Other Programming Languages: A ComparisonApr 19, 2025 am 12:22 AMCompared with other programming languages, MySQL is mainly used to store and manage data, while other languages such as Python, Java, and C are used for logical processing and application development. MySQL is known for its high performance, scalability and cross-platform support, suitable for data management needs, while other languages have advantages in their respective fields such as data analytics, enterprise applications, and system programming.
Learning MySQL: A Step-by-Step Guide for New UsersApr 19, 2025 am 12:19 AMMySQL is worth learning because it is a powerful open source database management system suitable for data storage, management and analysis. 1) MySQL is a relational database that uses SQL to operate data and is suitable for structured data management. 2) The SQL language is the key to interacting with MySQL and supports CRUD operations. 3) The working principle of MySQL includes client/server architecture, storage engine and query optimizer. 4) Basic usage includes creating databases and tables, and advanced usage involves joining tables using JOIN. 5) Common errors include syntax errors and permission issues, and debugging skills include checking syntax and using EXPLAIN commands. 6) Performance optimization involves the use of indexes, optimization of SQL statements and regular maintenance of databases.
MySQL: Essential Skills for Beginners to MasterApr 18, 2025 am 12:24 AMMySQL is suitable for beginners to learn database skills. 1. Install MySQL server and client tools. 2. Understand basic SQL queries, such as SELECT. 3. Master data operations: create tables, insert, update, and delete data. 4. Learn advanced skills: subquery and window functions. 5. Debugging and optimization: Check syntax, use indexes, avoid SELECT*, and use LIMIT.
MySQL: Structured Data and Relational DatabasesApr 18, 2025 am 12:22 AMMySQL efficiently manages structured data through table structure and SQL query, and implements inter-table relationships through foreign keys. 1. Define the data format and type when creating a table. 2. Use foreign keys to establish relationships between tables. 3. Improve performance through indexing and query optimization. 4. Regularly backup and monitor databases to ensure data security and performance optimization.
MySQL: Key Features and Capabilities ExplainedApr 18, 2025 am 12:17 AMMySQL is an open source relational database management system that is widely used in Web development. Its key features include: 1. Supports multiple storage engines, such as InnoDB and MyISAM, suitable for different scenarios; 2. Provides master-slave replication functions to facilitate load balancing and data backup; 3. Improve query efficiency through query optimization and index use.
The Purpose of SQL: Interacting with MySQL DatabasesApr 18, 2025 am 12:12 AMSQL is used to interact with MySQL database to realize data addition, deletion, modification, inspection and database design. 1) SQL performs data operations through SELECT, INSERT, UPDATE, DELETE statements; 2) Use CREATE, ALTER, DROP statements for database design and management; 3) Complex queries and data analysis are implemented through SQL to improve business decision-making efficiency.
MySQL for Beginners: Getting Started with Database ManagementApr 18, 2025 am 12:10 AMThe basic operations of MySQL include creating databases, tables, and using SQL to perform CRUD operations on data. 1. Create a database: CREATEDATABASEmy_first_db; 2. Create a table: CREATETABLEbooks(idINTAUTO_INCREMENTPRIMARYKEY, titleVARCHAR(100)NOTNULL, authorVARCHAR(100)NOTNULL, published_yearINT); 3. Insert data: INSERTINTObooks(title, author, published_year)VA
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
SublimeText3 Linux new version
SublimeText3 Linux latest version
Dreamweaver Mac version
Visual web development tools
ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment
SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.
SublimeText3 Mac version
God-level code editing software (SublimeText3)
