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WebLogic: The Definitive Guide, by Jon Mountjoy, Avinash Chugh
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BEA's WebLogic Server implements the full range of J2EE technologies, and includes many additional features such as advanced management, clustering, and web services. Widely adopted, it forms the core of the WebLogic platform, providing a stable framework for building scalable, highly available, and secure applications. In fact, in the long list of WebLogic's strengths and features, only one shortcoming stands out: the documentation that comes with the WebLogic server often leaves users clamoring for more information.
WebLogic: The Definitive Guide presents a 360-degree view of the world of WebLogic. Providing in-depth coverage of the WebLogic server, the book takes the concept of "definitive" to a whole new level. Exhaustive treatment of the WebLogic server and management console answers any question that developers or administrators might think to ask. Developers will find a useful guide through the world of WebLogic to help them apply their J2EE expertise to build and manage applications. Administrators will discover all they need to manage a WebLogic-based setup. And system architects will appreciate the detailed analysis of the different system architectures supported by WebLogic, the overall organization of a WebLogic domain and supporting network infrastructure, and more.
WebLogic: The Definitive Guide is divided into three sections that explore WebLogic and J2EE, Managing the WebLogic Environment, and WebLogic Enterprise APIs. Some of the topics covered in this comprehensive volume include:
- Building web applications on the WebLogic Server
- Building and optimizing RMI applications
- Using EJBs with WebLogic, including CMP entity beans
- Packaging and deploying applications
- Understanding WebLogic's support for clustering
- Performance tuning and related configuration settings
- Configuring WebLogic's SSL support
- Maximizing WebLogic's security features
- Building web services with XML
- Using WebLogic's JMX services and MBeans
- Sales Rank: #438654 in Books
- Published on: 2004-02-01
- Original language: English
- Number of items: 1
- Dimensions: 9.19" h x 1.52" w x 7.00" l, 2.66 pounds
- Binding: Paperback
- 848 pages
About the Author
Jon Mountjoy has worked with J2EE technologies since their inception, and with WebLogic in particular. He currently works as a Product Development Manager at a firm specializing in risk management, and has held posts training and consulting in J2EE technologies. Jon has a post-graduate degree in computer science.
Avinash Chugh presently works as Senior Development Manager for a firm that produces software for the regulated industries (finance, energy, pharmaceutics). He has over three years experience with J2EE technologies, primarily on the WebLogic Server. Avinash holds a post-graduate degree in computer applications from Delhi University. He likes to spend his free time on vegetarian cooking, racquet sports, and ambient/experimental music.
Most helpful customer reviews
3 of 5 people found the following review helpful.
A comprehensive and useful overview of WebLogic
By Dr. Lee D. Carlson
WebLogic has become a very popular tool for integrating and managing applications in multi-tier environments. Implemented as an application server, it remains one of the leaders in J2EE compliance. There is a lot to WebLogic, and so it is unlikely that any one person would need to be in a situation where expertise in all of its properties and capabilities would be required. Because of its popularity though, for those who must confront it via Web applications, a good general familiarity with it is essential. This book gives a comprehensive overview of WebLogic, and readers who need a particular set of questions answered or need an in-depth review will find it useful. The interest of this reviewer was in performance issues in WebLogic, and so the review will be confined to these issues as they are discussed in the book, as space permits. The book devotes an entire chapter to the performance tuning of WebLogic applications, but some of the other performance issues discussed in the book outside of this chapter include:
1. The Enterprise Java Bean (EJB) container supports checking on value changes so that only persistent fields that have been modified are written to the database. This results in enhanced performance for the EJB.
2. WebLogic provides flow control mechanisms that allow the suppression of messages during times of peak messaging. This ensures that the performance of other WebLogic services will not be affected adversely.
3. The use of cache filters, which enhance application performance by caching various portions of the application without needing code changes.
4. Client-server interactions are optimized when the client is operating within the same virtual machine (VM) as the Remote Method Invocation (RMI) object. Java pass-by-reference semantics when the client and the server object are collocated.
5. The Java Database Connectivity (JDBC) connection pools enhance the performance and scalability of an application by allowing the same physical connection to be shared by multiple applications. Connection testing however can cause delays, since WebLogic will execute the test whenever the connection pool receives a connection request from a client.
6. Although by default WebLogic allows one to retrieve the physical connection associated with a logical connection, it cannot reuse a physical connection, but will instead discard it and replace it with a new connection in the pool. The performance of an application will be degraded if it depends on the physical connections, since any statement cache might not be valid for the new connection in the pool. One can change this default however to allow physical connections to be returned to the pool when they are closed, if one really desires to do so.
7. The performance of JDBC applications can be improved by configuring WebLogic so that it maintains a statement cache for each connection in a connection pool. When a callable statement is created using a connection obtained from the pool, it will be cached so as to avoid recompiling when using it again.
8. The performance of a Java Messaging Service (JMS) server can be adjusted using WebLogic by setting up quotas that restrict the number of messages held in server memory, or by enabling paging so that messages held in memory can be swapped out to a persistent store under threshold conditions. The JMS server can also suppress the rate at which JMS clients produce messages when the server attains threshold conditions. WebLogic uses `flow control" to do this, which delays the time it takes for calls to produce a message to return. The rate of flow of the messages is thus controlled based on a minimum and maximum range. Any degradation in the conditions will cause the flow rate from senders to approach the minimum range. When the conditions improve, the rate will approach the maximum range. The WebLogic flow control mechanism is given detailed discussion in the book.
9. Two types of JMS file stores are possible under WebLogic, namely file-based stores and JDBC-accessible database stores. File stores are faster than JDBC stores, and they do not generate network traffic, whereas JDBC stores will if the database is on a different machine. JMS stores for persistent messages will also degrade application performance. In addition, enabling message paging to a JMS store is more expensive than disabling paging altogether.
10. Message delivery and can be controlled and handled in WebLogic by using either `delayed' or `scheduled' message delivery, time-to-live settings, and redelivery mechanisms. Messaging can affect performance depending on the type of messages exchanged. Server memory, message payloads, network resources, and server support for paging and persistent messaging will all have to be optimized in order to get maximum performance from the JMS server. Message selectors also affect performance, and several mechanisms that are used are discussed in the book.
11. JMS clients can use WebLogic to dynamically create a permanent destination on the JMS server using methods that are asynchronous, and so there may be a large delay between when a request for a new destination is submitted and when the new destination is bound to the Java Naming and Directory Interface (JNDI) tree of the server. Polling will then have to be done by the client regularly in order to find out if the destination has been created.
12. JMS servers can of course be clustered, and JMS clients use connection factories to obtain connections to a JMS server, wherein a load balancing strategy is used to decide which server in the cluster should host the JMS connection. Connection routing can be used to improve scalability, even though it increases network traffic, but network traffic can be minimized for server-side applications. 13. WebLogic uses transaction collocation to reduce network traffic by collocating objects on the server on which the transaction was initiated. If multiple objects are cluster-aware and are engaged in a distributed transaction, WebLogic will collocate the objects on the server on which the transaction had started.
4 of 9 people found the following review helpful.
Good Book: Very Comprehensive :
By Deepak K
Hi,
Though a good book but it is simplly a cut and paste of online weblogic documents.
if you want to carry all the online doc in one book then buy this book.
But still, I would recommend this book to all interested in weblogic admin.
Thanks
deepak
4 of 4 people found the following review helpful.
Easily the best WebLogic book ever
By Jonathan M. Julian
Don't be fooled by the bad reviews here...if you need to learn WebLogic in "21 days" or want a "kick start", then perhaps this book is not for you. But if you are an experienced developer that needs information one notch better than the BEA docs, then this book should be on your bookshelf. Mine stays at work, dog-eared and always ready to explain some detail to help solve a problem. Node Manager? Clustering? Domains configuration? SSL? It's all covered, in depth. Note that this book covers BEA WebLogic Server 8.1, not Portal, Integration, or WorkShop.
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