• Addressing WGA validation issues
  Some Vista users weren't able to validate due to WGA being down. Were you affected?
  (tags: WGA )

Pro EJB 3: Java Persistence API

EJB 3.0 sets a new precedent. It has made huge advances in ease of development, and its drastically simplified programming model has been widely acclaimed.

Mike Keith, EJB 3.0 co-specification lead, and Merrick Schinariol, reviewer of EJB 3.0, offer unparalleled insight and expertise on the new EJB 3.0 persistence specification, in this definitive guide to EJB 3.0 persistence technology. Expect full coverage and examination of the EJB 3.0 spec from these expert authors, including:

• The new EntityManager API
• The new features of EJB Query Language (EJB QL)
• Basic and advanced object-relational mapping
• Advanced topics like concurrency, locking, inheritance, and polymorphism

Assuming a basic knowledge of Java, SQL, JDBC, and some J2EE experience, Mike Keith and Merrick Schinariol will teach you EJB 3 persistence from the ground up. After reading it, you will have an in-depth understanding of the EJB 3.0 Persistence API and how to use it in your applications.

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With the discovery last week of the connection between Vista’s poor networking performance and audio activities, word quickly spread around the Net. No doubt this got Microsoft’s attention, and they have responded to the issue.

Here are some points of interest:

• “We have been looking into this problem and are working on a doc that will go into the technical details of what we have found.”
• “Please note that some of what we are seeing is expected behavior, and some of it is not. In certain circumstances Windows Vista will trade off network performance in order to improve multimedia playback. This is by design.”
• “The connection between media playback and networking is not immediately obvious. But as you know, the drivers involved in both activities run at extremely high priority. As a result, the network driver can cause media playback to degrade. This shows up to the user as things like popping and crackling during audio playback. Users generally hate this, hence the trade off.”
• “In most cases the user does not notice the impact of this as the decrease in network performance is slight. Of course some users, especially ones on Gigabit based networks, are seeing a

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The theory behind Vista’s ReadyBoost feature makes sense; store non essential data on the USB drive for quick access. Sounds good, but in reality does ReadyBoost really increase computer performance? PCSTATS finds the answer. For PCs with 1GB or higher the effects are negligible. What’s really interesting is the impact 1GB - to - 2GB has on Vista.

Continue @ Source

News Source: www.pcstats.com