Andrew McHugh is right to contrast the protagonists in his “Fight for the Future: HTML5 vs. Native Apps“. The details, though … about those, I’m less convinced. McHugh and I agree on several essentials: the choice between HTML5 and native is an important one; seamless, continuous updating of Web applications is a crucial part ofRead More
Measure the Real End-User Experience
SharePath Real User Monitoring (RUM) Express provides a real-time view into the actual experience of your end-user, including availability, response times, and service levels. This free, enterprise-class software helps isolate problems and pinpoint bottlenecks in your data center, network, or online application.
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You’re monitoring a particular server for particular behavior–maybe patterns of filesystem usage, or the appearance in database server logs of specific faults, or cycles of CPU (central processing unit) usage. You’ve already scripted a little bash or PowerShell report that helps make sense of the events. It’s mildly tedious, though, to have to log inRead More
HTML5 provides an overwhelming variety of communication methods. Let’s map them out. By “overwhelming”, I don’t mean “poorly-designed” or “unusable”; I just mean that Web developers and network operators have relatively little experience in the full range of facilities modern browsers embed, and it’s easy for all the novelties to disorient all but the specialist.Read More
Last week’s advice that SQL (!) is a good language for working programmers to learn early in their careers spawned plenty of comment and follow-up. One aspect that deserves more explanation is my casual characterization of SQL as “declarative”. That’s uncontroversial; it’s quite common for instructors to mention that SQL (or sometimes only its SELEC TRead More
“What language should I learn next?” is an exceedingly frequently-asked question among programmers, sysads, and devops. Any active online forum will entertain the subject eventually, and many return to it repeatedly. My own current favorite answer is one others rarely mention: SQL. Here’s why: Conventions and assumptions This exchange is typical of the genre. NearlyRead More
SQL is a great domain for attention to performance, because it so often happens “in the wild” that a modestly altered coding boosts performance by an eye-popping factor. It’s exciting to accelerate a query that takes a day to execute, into one that finishes in five seconds. Almost all the written examples of these speed-ups,Read More
Advanced monitoring tools enhance your value as a skilled devops practitioner; they’re not a threat to replace you. That’s not the impression many executive-level decision-makers have, of course; they truly believe that the next dashboard or console will substitute for expertise, and allow them to staff datacenters with entry-level screen-watchers. From their perspective, “deskilling” isRead More
If you’re in DevOps, you need to know about expect. If you’re in DevOps, accustomed to working on nitty-gritty back-end details of datacenter configuration, and you want a quick career boost, you truly need to learn a little Expect. Expect is the real “Internet duct tape”. While that label has been applied to everything fromRead More
This is a blog post by our friends at Heroix, you can read more here: Heroix Blog Recently an article was written on the impact “Application-Aware Network Performance Management”* has on business operations. Organizations that utilize important information technology (IT) resources such as mission critical applications and systems have long known that optimized IT resources meanRead More
Provisioning a new host in five minutes rather than an hour. Licensing for variable loads slashed by a large fraction. Another ‘9’ in availability (from 99%, say, to 99.9%). Many of the potentials of a “DevOps” orientation are familiar by now among systems administrators. Not so well known are several of the time-tested techniques programmersRead More