January 2010
Intermediate to advanced
272 pages
6h 41m
English
Content preview from CouchDB: The Definitive GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 4. The Core API
This chapter explores the CouchDB in minute detail. It shows all the nitty-gritty and clever bits. We show you best practices and guide you around common pitfalls.
We start out by revisiting the basic operations we ran in the last chapter, looking behind the scenes. We also show what Futon needs to do behind its user interface to give us the nice features we saw earlier.
This chapter is both an introduction to the core CouchDB API as well as a reference. If you can’t remember how to run a particular request or why some parameters are needed, you can always come back here and look things up (we are probably the heaviest users of this chapter).
While explaining the API bits and pieces, we sometimes need to take a larger detour to explain the reasoning for a particular request. This is a good opportunity for us to tell you why CouchDB works the way it does.
The API can be subdivided into the following sections. We’ll explore them individually:
Server
Databases
Documents
Replication
Server
This one is basic and simple. It can serve as a sanity check to see
if CouchDB is running at all. It can also act as a safety guard for
libraries that require a certain version of CouchDB. We’re using the
curl utility again:
curl http://127.0.0.1:5984/
CouchDB replies, all excited to get going:
{"couchdb":"Welcome","version":"0.10.1"}
You get back a JSON string, that, if parsed into a native object or data structure of your programming language, gives you access to the welcome string and ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.