Squid proxy server enables you to cache your web content and return it quickly on subsequent requests. System administrators often struggle with delays and too much bandwidth being used, but Squid solves these problems by handling requests locally. By deploying Squid in accelerator mode, requests are handled faster than on normal web servers,...

Why did I...

Linux is truly amazing when you consider how it originated and how it continues to evolve. From its modest beginning as the hobby of one person — Linus Torvalds of Finland — Linux has grown into a full-fledged operating system with features that rival those of any commercial UNIX operating system. To top it off, Linux — with...

In early 2004, DTrace remained nascent; while Mike Shapiro, Adam Leventhal, and I had completed our initial implementation in late 2003, it still had substantial gaps (for example, we had not yet completed user-level instrumentation on x86), many missing providers, and many features yet to...

Active Directory is a common repository for information about objects that reside on the network, such as users, groups, computers, printers, applications, and files. The default Active Directory schema supports numerous attributes for each object class that can be used to store a variety of information. Access Control Lists (ACLs) are...

Maximizing the performance of Unix systems is a challenge that requires a specialized understanding of operating system behavior, knowledge of the design and tuning capabilities of the applications that run on the system, and an intimate acquaintance with system and application performance measuring tools that assist in...

I knew the Internet before it got famous. There were places but no paths, no maps, no search engines. Entry required a key in the form of an IP address and an incantation in the language of UNIX. It was a small world that felt big because it was so easy to get lost in the shadowy realm of texts and data, completely devoid of color....

Named after the Monty Python comedy troupe, Python is an interpreted, open-source, object-oriented programming language. It's also free and runs portably on Windows, Mac OS, Unix, and other operating systems. Python can be used for all manner of programming...

Oracle Corporation acquired GoldenGate in 2009 as part of future strategy to implement advanced replication technologies within the product suite of data warehousing and real-time transaction management. Before the advent of Oracle GoldenGate technology, data replication was performed using Oracle Streams and third-party replication...

Hands-On Networking Fundamentals opens the world of computer networks to you. Computer networks arc a staple in homes, offices, and organizations. Through sharing information and resources, networks extend the power of computers worldwide. If you are new to networking or just beginning, this book is your chance to learn about networks...