InfoQ Homepage DevOps Content on InfoQ
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Inotify: Efficient, Real-Time Linux File System Event Monitoring
The need to scan a given filesystem for changes is a fairly common one, and there are a variety of common tasks which need this. A framework which offers real-time event notification for Linux file system events is Inotify. In this article we will walk through how to use Inotify to monitor directories and trigger alerts on changes and present tools you might want to add to your personal toolbox.
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Implementing Google's "Did you mean" Feature In Java
Leandro Moreira shows how to implement a domain specific version of Google’s “Did you mean” feature based on the SpellChecker project in the Apache Lucene sandbox using thee alternative algorithms (Levenshtein, Jaro-Winkler and N-gram).
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Scaling Clojure Web Apps with Google AppEngine
InfoQ takes a look at how a combo of Clojure and Google AppEngine (GAE) powers a new online project management tool, how Clojure integrates with GAE's key/value store, and the power of LISP.
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How HTML5 Web Sockets Interact With Proxy Servers
Peter Lubbers makes an introduction to HTML5 Web Sockets explaining how they interact with proxy servers, and what proxy configuration or updates are needed for the Web Sockets traffic to go through.
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Book Excerpt and Interview: Cloud Computing and SOA Convergence in Your Enterprise: A Step-by-Step Guide
A new book by David Linthicum, Cloud Computing and SOA Convergence in Your Enterprise: A Step-by-Step Guide, describes how to get the enterprise ready for cloud computing by carefully modeling enterprise data, information services and processes in a service oriented manner to make the transition to providing and consuming cloud services easier.
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Scout - Extensible Server and Application Monitoring
Scout is an extensible server and application monitoring service which focuses upon ease of installation and configuration. Scout offers default alerts to help administrators understand how the application is behaving under various loads as well as allowing developers to create plugins to extend Scout.
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Book Excerpt and Interview: Dynamic SOA and BPM: Best Practices for Business Process Management and SOA Agility
Boris Lublinsky interviews Marc Fiammante as part of a review of Marc' new book, Dynamic SOA and BPM: Best Practices for Business Process Management and SOA Agility. The book is based on many years of practical experience obtained during dozens of enterprise SOA implementations and covers major steps of such implementations
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Extreme Transaction Processing Patterns: Write-behind Caching
Lan Vuong shows how to optimize the performance of an application by leveraging the write-behind caching pattern which sends batch updates to the back-end database asynchronously within a user configurable interval of time, instead of doing sychronous write-through updates typical in web apps.
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MicroORM - A Dynamically Typed ORM for VB and C# in about 160 Lines
Using the new DLR features in VB 10 and C# 4 you can build a configuration-free ORM that works well with legacy stored procedures. Though accessed using normal object-dot-property syntax, all the data objects are built at runtime based solely on the information returned by the database. And this is done with no interfaces to define, classes to implement, or data mapping definitions to write.
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"SOA Governance" Revitalized
This article by Miko Matsumura discusses why people are pursuing SOA, whether SOA is dead, what SOA Governance is, what the relationship is to SOA itself, how it differs from management, how SOA differs from integration, and why SOA and SOA Governance continue to be significant issues for the Enterprise.
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Web Service Contract Versioning
Today we introduce the book “Web Service Contract Design and Versioning for SOA” by Thomas Erl, Anish Karmarkar, Priscilla Walmsley, Hugo Haas, L. Umit Yalcinalp, Canyang Kevin Liu, David Orchard, Andre Tost, James Pasley. More exactly, chapters 20, 21, and 22 of the book addressing the issues related to service contract versioning.
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Open Cloud Will Make Business SHINE
William El Kaim describes an Open Cloud Model based on agile principles and driven by an independent user community to define it further. He provides a sketch of a potential Cloud Operating System. He also defines the SHINE principles for transforming IT into BT (Business Technology).