J. Chris Anderson

CouchDB: The Definitive Guide (eBook, ePUB)

Time to Relax

• Format: ePub

Produktbeschreibung

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 manipulationInteract with CouchDB entirely though HTTP using its RESTful interfaceModel data as self-contained JSON documentsHandle evolving data schemas naturallyQuery and aggregate data in CouchDB using MapReduce viewsReplicate data between nodesTune CouchDB for increased performance and reliability

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Produktdetails

• Verlag: O'Reilly Media
• Seitenzahl: 272
• Erscheinungstermin: 19. Januar 2010
• Englisch
• ISBN-13: 9781449382933
• Artikelnr.: 37912691

Autorenporträt

J. Chris Anderson is co-founder of Grabb.it, a Portland-based web startup which provides Web scale analytics for the music industry. He specialises in web search and large scale CouchDB deployment, both for Grabb.it and as an independent consultant. Jan Lehnardt is also an Apache CouchDB committer and co-founder of Relaxed Technologies. Jan hacks on all parts of the web technology stack and focuses on making developers' lives easier. Noah Slater is an Apache CouchDB committer and release manager. He works with the community to get CouchDB running in as many places as possible.

Inhaltsangabe

Dedication
Foreword
Preface
Using Code Examples
Conventions Used in This Book
Safari® Books Online
How to Contact Us
Acknowledgments
Introduction
Chapter 1: Why CouchDB?
1.1 Relax
1.2 A Different Way to Model Your Data
1.3 A Better Fit for Common Applications
1.4 Building Blocks for Larger Systems
1.5 Local Data Is King
1.6 Wrapping Up
Chapter 2: Eventual Consistency
2.1 Working with the Grain
2.2 The CAP Theorem
2.3 Local Consistency
2.4 Distributed Consistency
2.5 Wrapping Up
Chapter 3: Getting Started
3.1 All Systems Are Go!
3.2 Welcome to Futon
3.3 Your First Database and Document
3.4 Running a Query Using MapReduce
3.5 Triggering Replication
3.6 Wrapping Up
Chapter 4: The Core API
4.1 Server
4.2 Databases
4.3 Documents
4.4 Replication
4.5 Wrapping Up
Developing with CouchDB
Chapter 5: Design Documents
5.1 Document Modeling
5.2 The Query Server
5.3 Applications Are Documents
5.4 A Basic Design Document
5.5 Looking to the Future
Chapter 6: Finding Your Data with Views
6.1 What Is a View?
6.2 Efficient Lookups
6.3 The View to Get Comments for Posts
6.4 Reduce/Rereduce
6.5 Wrapping Up
Chapter 7: Validation Functions
7.1 Document Validation Functions
7.2 Validation's Context
7.3 Writing One
7.4 Wrapping Up
Chapter 8: Show Functions
8.1 The Show Function API
8.2 Side Effect-Free
8.3 Design Documents
8.4 Querying Show Functions
8.5 Etags
8.6 Functions and Templates
8.7 Learning Shows
8.8 Using Templates
8.9 Writing Templates
Chapter 9: Transforming Views with List Functions
9.1 Arguments to the List Function
9.2 An Example List Function
9.3 List Theory
9.4 Querying Lists
9.5 Lists, Etags, and Caching
Example Application
Chapter 10: Standalone Applications
10.1 Use the Correct Version
10.2 Portable JavaScript
10.3 Applications Are Documents
10.4 Standalone
10.5 In the Wild
10.6 Wrapping Up
Chapter 11: Managing Design Documents
11.1 Working with the Example Application
11.2 Installing CouchApp
11.3 Using CouchApp
11.4 Download the Sofa Source Code
11.5 Deploying Sofa
11.6 Set Up Your Admin Account
11.7 Configuring CouchApp with .couchapprc
Chapter 12: Storing Documents
12.1 JSON Document Format
12.2 Beyond _id and _rev: Your Document Data
12.3 The Edit Page
12.4 Saving a Document
12.5 Wrapping Up
Chapter 13: Showing Documents in Custom Formats
13.1 Rendering Documents with Show Functions
13.2 Dynamic Dates
Chapter 14: Viewing Lists of Blog Posts
14.1 Map of Recent Blog Posts
14.2 Rendering the View as HTML Using a List Function
Deploying CouchDB
Chapter 15: Scaling Basics
15.1 Scaling Read Requests
15.2 Scaling Write Requests
15.3 Scaling Data
15.4 Basics First
Chapter 16: Replication
16.1 The Magic
16.2 Simple Replication with the Admin Interface
16.3 Replication in Detail
16.4 Continuous Replication
16.5 That's It?
Chapter 17: Conflict Management
17.1 The Split Brain
17.2 Conflict Resolution by Example
17.3 Working with Conflicts
17.4 Deterministic Revision IDs
17.5 Wrapping Up
Chapter 18: Load Balancing
18.1 Having a Backup
Chapter 19: Clustering
19.1 Introducing CouchDB Lounge
19.2 Consistent Hashing
19.3 Growing the Cluster
Reference
Chapter 20: Change Notifications
20.1 Polling for Changes
20.2 Long Polling
20.3 Continuous Changes
20.4 Filters
20.5 Wrapping Up
Chapter 21: View Cookbook for SQL Jockeys
21.1 Using Views
21.2 Look Up by Key
21.3 Look Up by Prefix
21.4 Aggregate Functions
21.5 Get Unique Values
21.6 Enforcing Uniqueness
Chapter 22: Security
22.1 The Admin Party
22.2 Basic Authentication
22.3 Cookie Authentication
22.4 Network Server Security
Chapter 23: High Performance
23.1 Good Benchmarks Are Non-Trivial
23.2 High Performance CouchDB
23.3 Bulk Inserts and Mostly Monotonic DocIDs
23.4 Bulk Document Inserts
23.5 Batch Mode
23.6 Single Document Inserts
23.7 Hovercraft
23.8 Trade-Offs
Chapter 24: Recipes
24.1 Banking
24.2 Ordering Lists
24.3 Pagination
Appendixes
Installing on Unix-like Systems
Debian GNU/Linux
Ubuntu
Gentoo Linux
Problems
Installing on Mac OS X
CouchDBX
Homebrew
MacPorts
Installing on Windows
Installing from Source
Dependencies
Installing
Security Considerations
Running Manually
Running As a Daemon
Troubleshooting
JSON Primer
Data Types
The Power of B-trees
Colophon

Rezensionen

"Das Buch fasst sich angenehm kurz, geht aber auf die wichtigsten Views und Design-Dokumente ausführlich und mit einer Menge praktischer Beispiele ein. Es ist deshalb jedem zu empfehlen, der schon einmal von CouchDB gehört hat und neugierig geworden ist." -- Linux-Magazin, Mai 2010

"Auf 272 Seiten wird knapp, aber sehr prägnant alles erläutert, was man wissen und beachten sollte, wenn man mit CouchDB arbeiten möchte. Die Autoren schaffen es dabei selbst auf Details einzugehen und schreiben ohne einen mit viel akademischen Weisheiten zu bombardieren funktionierende Lösungsätze. Immer wieder wird bei den jeweiligen Aspekten auf das zerntrale abgehoben und somit dem Leser verständlich gemacht, wo die (teilweise gravierenden) Unterschiede liegen.

Man merkt das die Autoren reichlich Erfahrung haben müssen, und so finden sich auch nützliche Angaben über Performance der einzelnen Angebote oder Warnungen/Informationen zu potentiellen Fehleinschätzungen die ein Neuling in diesem Bereich begehen könnte. Ein sehr gelungenes Buch." -- php-nuke.de, April 2010