June 2016
Intermediate to advanced
264 pages
7h 28m
English
book
Professional Clojure
by Jeremy Anderson, Michael Gaare, Justin Holguín, Nick Bailey, Timothy Pratley
Content preview from Professional Clojure
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Chapter 3Web Services
Clojure is a great general-purpose language, but it really shines when it comes to web services. Clojure's characteristic focus on immutable data structures, safe concurrency, and code re-use allows you to write services that are composable, reliable, and expressive.
In this chapter, we'll introduce the fundamental abstractions common to virtually all Clojure services: HTTP handlers, middleware, and routing. You'll use the popular Compojure template, which is based on Ring for HTTP abstraction and Compojure for routing. After a tour of the building blocks of a web service, you'll actually write one from start to finish: a storage-backed link shortener. The service will let users submit a full URL and a short name, then redirect requests to that short name back to the original URL. Finally, we'll briefly cover some of the popular options for deploying Clojure web services in development or production, either locally or to the cloud.
PROJECT OVERVIEW
For this example project, you're going to use the standard compojure template:
lein new compojure example-projectThe result is something very similar to the default template, but with a few extras:
- An added dependency for Compojure, a popular request routing library
- A development-only dependency on ring-mock for testing
- The lein-ring ...
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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.