Clojure, Web and Luminus

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The document discusses Clojure and web development frameworks. It introduces Clojure and why it is useful for web development. It then discusses libraries and frameworks for the Clojure web toolbox, including Ring, Compojure, and existing frameworks like Noir, Pedestal, and Luminus. Luminus is introduced as a framework that utilizes the Clojure ecosystem while providing defaults and flexibility. The presentation concludes with discussing improvements to Luminus.

Technology Design

Clojure,Web
and
Luminus
Monday, April 29, 13

• :name “Edward Tsech”
• :nick “edtsech”
• :langs [:clojure :haskell :shen]
• :interests [:fp :frp :data]
About
Monday, April 29, 13

Agenda
• Why Clojure?
• Clojure + Web
• Clojure Toolbox
• Libraries vs Frameworks
• Existing frameworks
• Luminus’ approach
Monday, April 29, 13

Clojure as Ecosystem
• Mature ecosystem of JVM
• Interactive development (REPL)
• ClojureScript
• Leiningen
• Emacs/Vim/SublimeText??
• Datomic
Monday, April 29, 13

Clojure as Language
• Rapid development
• Concurrency
• FP
• Metaprogramming
• DSL
• Data centric
Monday, April 29, 13

Clojure + Web
• Ring - HTTP abstraction (WCGI, Rack,
Hack)
• Compojure - routing DSL (Sinatra, Scotty,
Scalatra)
Monday, April 29, 13

Functional Web
Architecture
https://speakerdeck.com/weavejester/functional-web-
architecture
Monday, April 29, 13

Clojure Web Toolbox
• Auth - Friend
• JSON - data.json,
cheshire
• Validation - lib-noir,
Validateur
• Testing - Kerodon,
Peridot
• Logging - tools.logging
• XML - data.xml, data.zip
• SQL - Korma,
clojure.java.jdbc
• Deploy - Leiningen
• HTML - ...
• CRUD - ?
• Performance - Grinder
Monday, April 29, 13

Libraries
vs
Frameworks
Monday, April 29, 13

Libraries
• Easy to compose
• You have to know ecosystem
• You are not limited what you can build and
how to build it
• You have to create your own architecture
Monday, April 29, 13

Frameworks
• Take care of users (security, ...)
• Basic architecture
• Defaults (Libraries)
• Docs, tutorials, guides, ecosystem
• Habits
• Limitations (what..., how...)
Monday, April 29, 13

Existing Frameworks
• Conjure
• Noir
• Joodo
• Pedestal
• Luminus
Monday, April 29, 13

Origins
• Noir
• Noir + lib-noir
• lib-noir
• lib-luminus + Luminus
• lib-noir + Luminus
Monday, April 29, 13

Luminus
• Freedom (up to you
what and how)
• Utilize existing Clojure
ecosystem
• Libraries composability
• Flexible templates
• Basic architecture
• Defaults
• Documentation
• Take care of newcomers
Monday, April 29, 13

Improvements
• Improve proﬁles system
• Improve architecture
• Add proﬁles*
• Write guides, tutorials, docs
Monday, April 29, 13

Links 1
• Luminus - http://www.luminusweb.net/
• luminus-template - https://github.com/
yogthos/luminus-template
• luminus - https://github.com/yogthos/
luminus
• lib-noir - https://github.com/noir-clojure/lib-
noir
Monday, April 29, 13

Links 2
• A brief overview of the Clojure web stack -
http://brehaut.net/blog/2011/
ring_introduction
• Project Templates - http://brehaut.net/blog/
2013/project_templates
• Functional Web Architecture -
https://speakerdeck.com/weavejester/functional-
web-architecture
Monday, April 29, 13

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