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40:33

Data, Visibility, and Abstraction

Posted by Stuart Sierra  on  Jul 15, 2013 1

Stuart Sierra introduces some general guidelines for designing systems which make their data and abstractions more transparent to developers, using code examples in Clojure.

37:25

Engines of Abstraction

Posted by Jim Duey  on  Jun 13, 2013 1

Jim Duey surveys several abstraction techniques that can help in writing reusable code in Clojure.

Expressing Abstraction - Abstracting Expression

Posted by Ola Bini  on  Nov 01, 2012 2

Ola Bini attempts to answer a few questions: Why are new languages still being created, Is it worth choosing languages strategically, and Does language actually matter?

Panel: Objects On Trial

Posted by Michael Feathers, Brian Foote, Richard P. Gabriel, Joshua Kerievsky, Eliot Miranda and Dave Ungar  on  Dec 23, 2011 4

Michael Feathers, Brian Foote, Richard P. Gabriel, Joshua Kerievsky, Eliot Miranda and Dave Ungar put Objects on trial and found them guilty for not living up to their promise.

The Mapping Dilemma

Posted by David Nolen  on  Dec 15, 2011 3

David Nolen critiques the tools, languages and methodologies used today from the perspective of solving the “mapping dilemma”, introducing match, a pattern matching library for Clojure.

Heresies and Dogmas in Software Development

Posted by Dean Wampler  on  Nov 29, 2011 4

Dean Wampler discusses the merits of several controversial issues: Goto, Design before Code, Design Patterns, Corba vs. REST, Object Middleware and ORMs, and Identifiers with Spaces.

Case Study: Large-scale Pure OO at the Irish Government

Posted by Richard Pawson  on  Oct 13, 2011 10

Richard Pawson discusses a case study of a large pure OO project for the Irish government, presenting the challenges met, the reason for choosing pure OO, and lessons learned implementing it.

Clojure: The Art of Abstraction

Posted by Alex Miller  on  Aug 09, 2011 1

Alex Miller presents some of the abstractions that make Clojure a great language: Collections, Sequence and Higher Order Functions, Multimethods, Protocols, Atoms, Macros, and others.

Abstractions at Scale–Our Experiences at Twitter

Posted by Marius Eriksen  on  Dec 14, 2010 1

Marius Eriksen considers that scalability problems appear when leaky abstractions are used, exemplifying with RDBMS, GC, and threads, presenting abstractions that help dealing with scalability issues: map-reduce, shared-nothing web applications, big table, all providing narrow access to explicit resources.

RPC and its Offspring: Convenient, Yet Fundamentally Flawed

Posted by Steve Vinoski  on  Dec 19, 2009 2

In this presentation from QCon London 2009, Steve Vinoski discusses what RPC means, the origin and history of RPC, RFC 707, the origins of Distributed Computing Environment (DCE), the growth of the Internet, standardization, distributed objects, CORBA, DCOM, Java, SOAP, WS-*, the fundamental flaws in RPC, REST properties and constraints, REST vs RPC philosophy, Erlang reliability and concurrency.

Eric Evans on DDD: Strategic Design

Posted by Eric Evans  on  Nov 30, 2007 8

This talk introduces two broad principles for strategic design. 'Context mapping' addresses the fact that different groups model differently. 'Core domain' distills a shared vision of the system's "core domain" and provides a systematic guide to when "good enough" is good enough versus when to push for excellence.

DDD: putting the model to work

Posted by Eric Evans  on  Nov 06, 2007 18

This talk will outline some of the foundations of domain-driven design:How models are chosen and evaluated;How multiple models coexist;How the patterns help avoid the common pitfalls, such as overly interconnected models;How developers and domain experts together in a DDD team engage in deeper exploration of their problem domain and make that understanding tangible as a practical software design.

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