Architects Zone - Architectural Design Patterns & Best Practices

Why (and How) to Replace Amazon SQS with MongoDB

mattinsler — Fri, 10 Feb 2012 06:53:46 +0000

What is Amazon SQS? Amazon SQS (Simple Queue Service) is a reliable message queuing service hosted in the Amazon cloud. This service is ideal for sending messages between servers that need to acknowledge that processing has been completed. When a message is popped from the queue, it is not deleted, but marked with the client who has made the request. The client is then responsible for...

Search Expertise - A Necessary Skill in Some Industries

lyndaw — Fri, 10 Feb 2012 05:59:33 +0000

I begin 2012 with a new perspective on enterprise search, one gained as purely an observer. The venues have all been medical establishments with multiple levels of complexity and healthcare workers. As the primary caregiver for a patient, and with some medical training, I take my role as observer and patient advocate quite seriously. Preview Text: ...

Broad NoSQL Adoption in 2012?

egenesky — Thu, 09 Feb 2012 18:46:47 +0000

The current state of SQL may cause some developers physical pain, especially when they see an industry-wide survey released by Couchbase yesterday that suggest a strong growth in NoSQL adoption in 2012. As a self-defined "Simple, Fast, Elastic NoSQL Database," Couchbase has recently rebranded their NoSQL Membase server from Membase to Couchbase. This merger of Membase, an open source...

Trends in NoSQL Interest According to Google Analytics

KChodorow — Thu, 09 Feb 2012 17:42:44 +0000

About a year ago, Mike Dirolf drew an enormous circle covering a sheet of paper. “Here are the people who use databases,” he said, “and here are the people who have even heard of NoSQL,” and he drew a circle this big: ° . I think that interest has grown since then. By this time, the number of people that know about NoSQL is at least this big: o . Preview Text: ...

Apache Thrift Quickstart Tutorial

chamith buddhika — Thu, 09 Feb 2012 16:37:15 +0000

Thrift is a cross language RPC framework initially developed at Facebook, now open sourced as an Apache project. This post will describe how to write a thrift service and client in different modes such as blocking, non blocking and asynchronous. Preview Text: Originally developed at Facebook, Thrift is now an open source RPC framework thanks...

Re-use Nagios Plugins in Sensu for Quick Profit

joemiller — Thu, 09 Feb 2012 16:23:04 +0000

In my previous article I mentioned a key strength of Sensu is the ability to re-use existing Nagios plugins. This is a powerful feature of Sensu. Nagios has been around for at least 1000 years according to most recent archaeological discoveries, which means a vast amount of human effort (and capital) has gone into creating Nagios plugins. Preview Text: ...

The Problem with Unit Tests

ayende — Thu, 09 Feb 2012 15:13:48 +0000

I am a strong believer in automated unit tests. And I read this post by Phil Haack with part amusement and part wonder. RavenDB currently has close to 1,400 tests in it. We routinely ask for failing tests from users and fix bugs by writing tests to verify fixes. But structuring them in terms of source code? That seems to be very strange. Preview Text: ...

Search Needs to Help Disprove Patent Trolls

hull_j — Thu, 09 Feb 2012 15:02:57 +0000

As the “father of the Internet,” Tim Berners-Lee, got onto a plane to head to the burgeoning tech center of Tyler, Texas (all sarcasm intended), he must have wondered how he found himself in this position. Berners-Lee is testifying at a court case of a patent holder who is suing Google, Amazon, and others regarding the viability of a patent claiming intellectual property ownership over the...

Massively Easy Win7 Box Setup From Scratch

mitchp — Thu, 09 Feb 2012 05:32:20 +0000

Patrick Dubois, the Godfather of DevOps (and a DZone MVB), has created a few open source tools and one of them, VeeWee, is a tool for building boxes for a few of his favorite tools like Vagrant, KVM, and Virtual Box. In this video you will witness the magic of VeeWee as Dubois sets up a Windows 7 box with VeeWee from scratch.From the GitHub page:VeeWee: the tool to easily build vagrant base...

Automate Your DB Releases with TeamCity and Red Gate

troyhunt — Wed, 08 Feb 2012 21:16:44 +0000

Databases have long been the poor cousin of the application tier when it comes to many of the processes we take for granted in the .NET world. Source control management, for example, is near ubiquitous for application files and there are several excellent VCS products which make versioning a breeze. Preview Text: Database source control is no...

Algorithms and NoSQL (Part 3): the MongoDB Aggregation Framework

garudad — Wed, 08 Feb 2012 16:17:50 +0000

In part 1 of this article, I described the use of MongoDB to solve a specific Chemoinformatics problem, namely the computation of molecular similarities through Tanimoto coefficients. When employing a low target Tanimoto coefficient however, the number of returned compounds increases exponentially, resulting in Preview Text: This series covers...

Pipes: The Data Flow Framework for Gremlin - GraphDB Traversal

okram — Wed, 08 Feb 2012 13:29:07 +0000

Preview Text: Here's an example graph dataset to illustrate how Pipes works. Pipes is TinkerPop's dataflow framework that uses Gremlin, a graph traversal language. According to Marko Rodrigues, the pipes distribution includes multiple pipes that can be "mixed and matched to yield lazy graph traversals." This post includes...

Using Solr's Dismax Tie Parameter

gr0 — Wed, 08 Feb 2012 13:08:17 +0000

The Dismax query parser has been with Solr for a long time. Most of the time we use parameters like qf, pf or mm forgetting about a very useful parameter which allows us to control how the lower scoring fields are treated – the tie parameter. Preview Text: Most of the time in Solr's Dismax query parser we use parameters like qf, pf or mm...

Practical PHP Refactoring: Convert Procedural Design to Objects

piccoloprincipe — Wed, 08 Feb 2012 09:30:46 +0000

Even in languages where there are no constructs but classes, there is no constraint that can force a programmer into writing object-oriented code. In many cases, just wrapping a series of functions into classes do not result in the design.The Convert Procedural Design to Objects has great benefits, but it reaches a very large scale (potentially the whole application).What does object-oriented...

Searching MongoDB Sub-Documents…

mshallop — Wed, 08 Feb 2012 06:36:50 +0000

I’ve recently finished a mongo collection that stores all auditing data from my application — specifically, it records every database transaction, conducted in either mySQL or mongo, assigning an event-identifier to the event, and storing the data under an event ID within a single sessionManger object.Sounds good?Well, I like it. This design eliminated the need to maintain meta-data...