SQL vs. NoSQL: Which Is Better?

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So what can we conclude? Well, with the drivers here I focused primarily on ease-of-use. There are other factors that need to be considered, as well. Do they support connection pooling, for example? Do they cache? What about pulling in large amounts of data? (Hint: Most of the better drivers for most of the popular languages support cursors, so you don’t have to pull all the data in at once.) Those are factors you’ll need to investigate as you choose a driver for the language and database you’re using. But in general, virtually all the popular languages today, including Java, PHP, Python, PERL, and even C++, have nice libraries that make database programming far easier than it used to be.

via SQL vs. NoSQL: Which Is Better?.

MongoDB does great with large complex structures that are typically read in individually, while the large relational databases do well when I’m processing huge amounts of data. And no, my clients’ data needs are nowhere near as big as Google, so we don’t encounter any performance and scalability problems.

Usermin

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Usermin is a web-based interface for webmail, password changing, mail filters, fetchmail and much more. It is designed for use by regular non-root users on a Unix system, and limits them to tasks that they would be able to perform if logged in via SSH or at the console. See the standard modules page for a list of all the functions built into Usermin.

via Webmin.

IPID

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    The 16-bit IPID field carries a copy of the current value of a counter in a host’s IP stack. Many commercial operating systems (including various versions of Windows and Linux versions 2.2 and earlier) implement this counter as a global counter. That is, the host maintains a single IPID counter that is incremented (modulo 216 ) whenever a new IP packet is generated and sent. Other operating systems implement the IPID counter as a per-flow counter (as is done in the current version of Linux), as a random number, or as a constant, e.g., with a value of 0 ([1]).

From: ftp://gaia.cs.umass.edu/pub/Chen04_IPID.pdf

From: Fun with IP Identification Field Values

RFC 791 gives a description about the IP Identification field.

The identification field value is used to uniquely identify the fragments of
a particular datagram. Fragments of a particular datagram are assembled if
they have the same source, destination, protocol, and Identifier. The
identifier is being chosen to be unique for this “this source, destination
pair and protocol for the time the datagram (or any fragment of it) could be
alive in the internet”[1].

Zimbra offers Open Source email server software and shared calendar for Linux and the Mac.

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VMware Zimbra is an enterprise-class email, calendar and collaboration solution, built for the cloud, both public and private. With a redesigned browser-based interface, Zimbra offers the most innovative messaging experience available today, connecting end users to the information and activity in their personal clouds.

via Zimbra offers Open Source email server software and shared calendar for Linux and the Mac..

The slashdot comment from whence I found out about this recommended *not* to use this service.  Interesting nonetheless.

I referenced Citadel back in November.

Glasses-free 3-D TV looks nearer

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Instead of the complex hardware required to produce holograms, the Media Lab system, dubbed a Tensor Display, uses several layers of liquid-crystal displays (LCDs), the technology currently found in most flat-panel TVs. To produce a convincing 3-D illusion, the LCDs would need to refresh at a rate of about 360 times a second, or 360 hertz. Such displays may not be far off: LCD TVs that boast 240-hertz refresh rates have already appeared on the market, just a few years after 120-hertz TVs made their debut.

via Glasses-free 3-D TV looks nearer – MIT News Office.