Wow! eBook – Blog

Book Description

CouchDB is a new breed of database for the Internet, geared to meet the needs of today’s dynamic web applications. With this concise introduction, you’ll learn how CouchDB’s simple model for storing, processing, and accessing data makes it ideal for the type of data and rapid response users now demand from your applications—and how easy CouchDB is to set up, deploy, maintain, and scale.

The code-packed examples in this book will help you learn how to work with documents, populate a simple database, replicate data from one database to another, and a host of other tasks.

• Install CouchDB on Linux, Mac OS X, Windows, or (if you must) from the source code
• Interact with data through CouchDB’s RESTful API, and use standard HTTP operations, such as PUT, GET, POST, and DELETE
• Use Futon—CouchDB’s web-based interface— to manage databases and documents, and to configure replications
• Learn how to create, update, and delete documents in JSON format, and how to create and delete databases
• Work with design documents to get the formatting and indexing your application requires

Table of Contents
Chapter 1. Why CouchDB?
Chapter 2. Installation
Chapter 3. CouchDB Basics Download Now »

Book Description

Today’s mobile devices have GPS and standard APIs to give you access to coordinates—but what can you do with that data? With this concise book, application developers learn how to work with location data quickly and easily, using Node.js, CouchDB, and other open source tools and libraries.

Node.js makes it simple to run event code on the Web, and the CouchDB document-oriented database lets you store location data and perform complex queries on it quickly. You’ll learn how to get started with these tools, and then use them together to build an example project called MapChat, using HTML and JavaScript code samples.

• Learn how to serve dynamic content with Node.js, and use its asynchronous IO to handle several requests at once
• Become familiar with GeoJSON, Geohash, and the Geospatial Data Abstraction Library (GDAL) for working with spatial data
• Build geospatial indexes using the GeoCouch branch of CouchDB
• Combine these tools to build a project that lets users post real-time chat messages tagged with their current map location

About the Author
David Thompson has been developing code using open source tools for 10 years. He is passionate about open source, web applications, and api design. He has work almost exclusively for startups where building applications on new and innovative technologies is the norm. Download Now »

Book Description

A practical guide to web developers who need to scale their CouchDB database instances. The basic concepts behind CouchDB’s scalability (i.e. its distributed shared nothing architecture) will be covered as well as:

• Replicating using both Futon and CouchDB’s RESTful API
• Continuous replication
• Conflict resolution
• Load balancing
• Clustering with CouchDB Lounge

About the Author
Bradley Holt is a web developer and entrepreneur. He has ten years of experience with PHP and MySQL and started using CouchDB soon before version 1.0 was released. He is the co-founder of Found Line, a creative services firm located in Burlington, Vermont. He has been the primary organizer of his local PHP users group since its inception in 2007.

He is a Board Member at Vermont Community Access Media (VCAM), a non-profit community media and technology center. He is a minor contributor of source code and bug reports to Zend Framework and an active member of the PHP community. He blogs at http://bradley-holt.com/ and can be found on Twitter as @BradleyHolt [http://twitter.com/BradleyHolt. Download Now »

Book Description

If you want to use CouchDB to support real-world applications, you’ll need to create MapReduce views that let you query this document-oriented database for meaningful data. With this short and concise ebook, you’ll learn how to create a variety of MapReduce views to help you query and aggregate data in CouchDB’s large, distributed datasets.

You’ll get step-by-step instructions and lots of sample code to create and explore several MapReduce views through the course of the book, using an example database you construct. To work with these different views, you’ll learn how to use the Futon web administration console and the cURL command line tool that come with CouchDB.

• Learn how the Map and Reduce steps work independently and together to index your data
• Use the example database to create several temporary views based on different criteria
• Discover the uses of Map and Reduce JavaScript functions
• Convert your temporary views to permanent views within a design document
• Learn several options for querying the data within your views
• Limit the number of results returned, skip some results, or reverse the order of the output
• Group your results by exact keys or by parts of keys Download Now »

Book Description

Three of CouchDB’s creators show you how to use this document-oriented database as a standalone application framework or with high-volume, distributed applications. With its simple model for storing, processing, and accessing data, CouchDB is ideal for web applications that handle huge amounts of loosely structured data. That alone would stretch the limits of a relational database, yet CouchDB offers an open source solution that’s reliable, scales easily, and responds quickly.

CouchDB works with self-contained data that has loose or ad-hoc connections. It’s a model that fits many real-world items, such as contacts, invoices, and receipts, but you’ll discover that this database can easily handle data of any kind. With this book, you’ll learn how to work with CouchDB through its RESTful web interface, and become familiar with key features such as simple document CRUD (create, read, update, delete), advanced MapReduce, deployment tuning, and more.

* Understand the basics of document-oriented storage and manipulation
* Interact with CouchDB entirely though HTTP using its RESTful interface
* Model data as self-contained JSON documents
* Handle evolving data schemas naturally
* Query and aggregate data in CouchDB using MapReduce views Download Now »

Book Description

The new world of cloud computing needs data storage. CouchDB is the scalable, portable, simple database engine that is helping open source cloud architects put their data stores onto a firm foundation. Beginning CouchDB provides the tools to begin using this very powerful database engine without having to pay license fees for the software, or worry about administrator’s certifications or vast hardware requirements. This book teaches the fundamentals of one of the most powerful database engines ever created for the price of a good lunch. After reading this book and working through the examples, you’ll be able to write your own applications for CouchDB quickly and easily.

• In-depth, non-intimidating guide to CouchDB and how it differs from similar offerings such as SimpleDB and BigTable, and also how it differs from traditional relational and object-oriented databases such as Oracle, SQL Server, and MySQL.
• Detailed explanation of how CouchDB works, its suitability for use in distributed environments, the role of Erlang, and other technical topics in a manner that does not obfuscate methods or results. JavaScript is extremely popular as a development language for CouchDB. No Erlang is required, but a little bit can’t hurt either.
• A tutorial-oriented approach to teaching readers how to use CouchDB, featuring many code examples and listings, as well as screenshots where relevant. Download Now »