The Definitive Guide to Linux Network Programming by Keir Davis, John W. Turner and Nathan Yocom
As the title claims, the scope of The Definitive Guide to Linux Network Programming is broad. The authors take a hands-on approach, and each chapter contains concrete programming examples of varying sizes and complexities. The three main sections cover fundamental networking concepts, alternative design architectures and security. The book also contains an appendix on IPv6. In addition, all of the code can be downloaded from the publisher's Web site.
Many of the concepts presented in the book are quite general and not limited necessarily to Linux. Hence, the book can be used as a concise introduction for developers new to networking and socket programming. Intermediate-level developers, on the other hand, could benefit from the explanation of architecture and performance. For instance, the book contrasts multiplexing, pre-forking and multithreading server designs. Simple yet effective guidelines help developers make their design decisions.
The material in the book typically is presented in a self-contained manner, but you do need to be familiar with C. Also, in explaining a few points, the authors rely on C++ and advanced libraries in order to provide more realistic coding examples. For instance, a GUI chat example uses the C++ Standard Template Library (STL) and the Qt graphical library.
Roughly a third of the book discusses how to secure code at different levels, from buffer overruns to authentication. Developers should consider security to be an essential activity, on the same level as debugging and performance tuning. The book also contains a section that briefly introduces tools for automated code analysis. These can be useful instruments to improve code quality and application stability.
The book does have a few shortcomings. Because of its introductory nature, the descriptions of several topics may be confusing. At a minimum, some topics, including non-blocking sockets and OpenSSL BIO, may require further reading if you are interested in a more in-depth understanding. In addition, the book has no bibliography, and only limited pointers are offered to additional reference materials. Not-so-experienced programmers might benefit more from a more critical analysis of the code proposed in the book through exercises or extensions. Finally, the code examples contain some errors. The publisher's Web site has yet to make available the book's correction list.
Practical Task Scheduling Deployment
July 20, 2016 12:00 pm CDT
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
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With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide