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  • .NET 4 Beta 1 Now Supports Software Transactional Memory

    Microsoft has released a new version of .NET 4.0 Beta 1, one that incorporates STM.NET, the Software Transactional Memory. STM is an alternative mechanism to lock-based synchronization used to control the concurrent access to shared memory.

  • REST and transactions?

    The topic of distributed transactions and their place within a REST world has come up again recently. Many people have indicated that they are either thinking of using the combination or are doing so now. Others, including Roy Fielding, believe that the two simply do not go together.

  • .NET 4 Cancellation Framework

    .NET 4 will have new types to support building cancellation-aware applications and libraries. The new CancellationToken, CancellationTokenSource, and cancellation exception types provide a cooperative cancellation framework.

  • Presentation: Financial Transaction Exchange at

    Betfair is the world's largest betting exchange with a transaction volume the equivalent of over half the combined equity trading volume of every major stock exchange in the world. In response to an increase in transaction volume coupled with a decrease in value per transaction, Betfair launched a number of initiatives to dramatically increase transaction processing capacity and reduce cost.

  • Transaction Strategies Based on Java Transaction Models

    It is a common mistake to confuse transaction models with transaction strategies. Mark Richards discusses the three transaction models supported by the Java Platform (Local Transaction, Programmatic Transaction, and Declarative Transaction) and four transaction strategies (Client Orchestration, API Layer, High Concurrency, and High Speed Processing) that can be based on those models.

  • MIX 09: Nigel Ellis on Azure SQL Data Services

    Nigel Ellis, Architect at Microsoft, presented today a detailed overview of the new relational model of Azure SQL Data Service, which was announced a couple of weeks ago on the team's blog. Nigel also demonstrated how SDS could be used by WordPress (a PHP application) via an ODBC driver.

  • Eric Newcomer On Difference Between RESTful vs. Web Service Transactions

    Eric Newcomer, chair of the OSGi Alliance Enterprise Expert Group and former CTO of IONA Technologies, posted an answer to the question “What is the difference between RESTful transactions and Web Services transactions?”

  • Interview: Gregor Hohpe on Conversation Patterns and Cloud Computing

    In this interview, recorded at QCon London, Google architect Gregor Hohpe talks to Stefan Tilkov about his new work on conversation patterns, building upon his earlier work on enterprise integration patterns. Gregor also talks about the similarities and differences in several approaches to cloud computing.

  • Interview: Eric Evans Interviews Greg Young on the Architecture of a Large Transaction System

    Eric Evans, the author of Domain Driven Design and playing the role of an interviewer for the first time, asks Greg Young about the architectural challenges encountered while designing and implementing a system used to process tens of thousands of transactions per second.

  • Interview: Mark Little on Transactions, Web Services, and REST

    In this interview, recorded at QCon London 2008, Red Hat Director of Standards and Technical Development Manager for the SOA platform Mark Little talks about extended transaction models, the history of transaction standardization, their role for web services and loosely coupled systems, and the possibility of an end to the Web services vs. REST debate.

  • Interview: Randy Shoup Discusses the eBay Architecture

    In this interview from QCon San Francisco 2007, Randy Shoup discusses the architecture of eBay. Topics discussed include eBay's architectural principles, horizontal and vertical partitioning, ACID vs. BASE, handling data inconsistency, distributed caching, updating eBay on the fly, architectural and coding standards, eBay's search infrastructure, grid computing, and SOA.

  • GemStone Reveals Plans for MagLev Ruby VM at RailsConf 2008

    At RailsConf on Friday, Avi Bryant and Bob Walker of GemStone revealed plans for the MagLev project. MagLev will run Ruby on Rails within GemStone's distributed object technology. The MagLev VM, although only partially implemented, so far outperforms MRI 1.8.

  • Presentation: Voca, UK's largest payment processing engine running Spring

    In this presentation from QCon London 2007, William Soo and Meeraj Kunnumpurath discuss the Voca transaction processing system architecture, the previous Mainframe-based architecture, architectural challenges and requirements, the new Spring and J2EE-based architecture, upcoming challenges for Voca, and technologies to watch for in the future.

  • Software Transactions: A Programming Language Perspective

    Erlang has recently generated a lot of interest as a language that can deal both efficiently and elegantly with concurrency. In particular, there is no shared memory between "process" instances which only communicate via asynchronous messages. Nevertheless, Shared Memory Concurrency remains an intense research subject especially for multicore applications.

  • Should developers write their own transaction coordination logic?

    In a recent discussion Mark Little and Greg Pavlik discuss whether transaction coordinators and transaction protocols are necessary in the context of widely distributed units of work. Isn't the knowledge of state alignment patterns enough?