Group items tagged

" I've been hearing from people that have had a great deal of success using the Domain Event pattern and the infrastructure I previously provided for it in Domain Events - Take 2. I'm happy to say that I've got an improvement that I think you'll like. The main change is that now we'll be taking an approach that is reminiscent to how events are published in NServiceBus."

"SourceMaking - is the best information source on the Web on such software development topics as design patterns, refactoring and UML. A lot of information freely available through the site's pages, so feel free to use bookmarklet to leave interesting chapters for further reading. You may start browsing the site by following one of these topics:"

" Guy L. Steele Jr. believes that it should not be the programmer's job to think about parallelism, but languages should provide ways to transparently run tasks in parallel. This requires a new approach in building languages supporting algorithms built on independence and build-and-conquer principles rather than on linear decomposition of problems. "

" Jeff Patton outlines the concepts behind design thinking: clear problem definition, ideation, iteration, and execution plans that emphasize continuous learning, accompanied by real-life examples. "

" Mike Lee considers that a software engineer makes great applications not because he follows good rules but because he has a better way of looking at the world and he learns from experience. "

" John Davies addresses some of the difficulties dealing with FIX, FpML, SWIFT and integration in financial services software industry, challenging some of the canonical models existing today. "

"Patterns-Based Engineering: Successfully Delivering Solutions via Patterns book, by Lee Ackerman and Celso Gonzalez, focuses on how to improve efforts in identifying, producing, managing and consuming patterns - leading to better software delivered more quickly with fewer resources."

"Something I've been looking at adding to AutoMapper was the idea of doing automatic query projection in the Select query projection in LINQ statements. One downside of AutoMapper is that projection from domain objects still forces the entire domain object to be queried and loaded. For a lot of read-only scenarios, loading up a tracked, persistent entity is a bit of a waste. And unless you're doing CQRS with read-specific tables, you're doing projection somehow from the write tables."

"A few months ago, Jimmy Bogard, author of the excellent AutoMapper wrote a great article about Autoprojecting LINQ queries. Now that Jimmy has done all the hard expression tree work, this article extends his example to include caching and simple flattening capabilities and goes on to show it in use in a simple EF 4.1 Code First application."

" Node.js has unleashed a new wave of interest in server side Javascript. In this session, you'll learn how to get productive with node.js by leveraging Connect and Express node middleware. Connect makes it simple to stack layers and build complex web services with minimal effort and maximum reuse. We'll also walk quickly through Express - an easy-to-use framework built on top of Connect that makes development even faster."

"When building larger scale applications, message queues are often very helpful for both distributing and aggregating workloads. Distributed workloads are a natural fit for message queues, simply having multiple readers attached to the same queue is often enough. Aggregation, usually implemented with one reader and multiple writers, is used to bundle lots of small updates into a large block. This facilitates the use of advanced database techniques such as the use bulk inserts instead of individual insert/update statements."

" Ulf Wiger advocates for a programming model change based on the actor model which more accurately reflects old human concurrency patterns that we have used in our daily lives for thousands of years. "

"In many conversations, and in many comments here, you hear phrases like "well that's not really suited to DDD" or "DDD isn't the best fit for that problem". You even see those kind of comments on my blog, and often they are posted by me."

"Udi and I agree on probably 95% of what we talk about, one of the places that we have differing opinions is in the use of Event Sourcing I use the term as described previously to mean the rebuilding of objects based on events, not the definition that is currently on the bliki. To me this is an important distinction and I figured it would be worthwhile to write a post on why I feel the way I do, I explained parts of it in the previous post about CQRS and Event Sourcing but I wanted to talk not just about how the patterns are symbiotic but also some of the other reasons I use event sourcing."

"As a book and methodology, DDD is an excellent way to approach complex software problems, and make them far more understandable and manageable. As a buzzword, DDD is in danger of being corrupted like many other good software practices."

"ORM users have grown accustomed to thinking in terms of .NET and LINQ, forgetting the specifics of particular databases, differences in their functionality and effectiveness of certain SQL-constructions. In this article, we shall briefly discuss some of the problems that the user may face in the process of developing an application for Entity Framework (EF), which is meant to interact with Oracle, MySQL, PostgreSQL or SQLite rather than Microsoft SQL Server. I hope this will be useful both for users who create an EF-application for these databases for the first time as well as for those who create an application that must support interaction with multiple databases, i.e., SQL Server and Oracle. As examples of implementing EF-providers for databases other than SQL Server, we shall use Devart ADO.NET providers."

"The biggest thing in web apps since "rails can't scale" is this idea that "your rdbms doesn't scale." This has gone so far as to be dubbed the coming of age for "nosql" with lots of blog posts and even a meetup. Indeed, there are many promising key-value stores, distributed key-value stores, document oriented dbs, and column oriented db projects on the radar. This is *definitely* a great thing for the web application scene and this level of variety will definitely open doors for organizations large and small in the near and long term."

" Greg Young discusses how to use events to store data, and how testing, versioning and performance are impacted by an event-centered model. "

" Stuart Halloway discusses how we use a total control time model, proposing a different one that represents the world more accurately helping to solve some of the concurrency and parallelism problems. "

"It's fair to say that the mere mention of the word REST causes polarisation in people. For a while REST struggled against the WS-* wave and then appeared to have surmounted that obstacle only to start to fall fowl of those people who believe that there is a benefit to be found within REST but perhaps not as much as others might like to believe. One of the main advocates against buying in to the totality of what "RESTafarians" believe is Jean-Jacques Dubray, who recently published an article on what he calls unREST. As JJ begins:"