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Lori MacVittie

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Top Stories by Lori MacVittie

The Internet of Security Things No, this isn't a tirade on the security of IoT. It's about story about change. Specifically, change and its implications on security. Change is constant. There's a million different axioms and proverbs about change, so it's really hard to choose just one to sum up how it impacts security. Inarguably it does. And right now there's a lot of change going on that's impacting security. "Micro" movement like microservices and microsegmentation are dramatically changing perimeters and breaking apart traditional "edge" security into distributed pockets of security, each architected specifically for the application or architecture it's protecting. The nearly ubiquitous use of HTTP as the de facto application transport protocol (it's the new TCP, you know) has led to an increasing rise in the elimination of network access and an increase focus ... (more)

When You Can't Squeeze Your App | @DevOpsSummit #DevOps #Microservices

Developers are often caught between a rock and a hard place. They aren’t allowed to employ the tricks of the trade that can squeeze more performance out of their code because the consequences – technical debt stemming from impaired maintainability - are generally considered even worse. It’s not appropriate, for example, to use bit-shifting techniques to do simple multiplication because while it might be milliseconds faster, it isn’t always universally understood and thus can cause issues with long-term maintainability. While we (developers) like to joke that “if it was hard to w... (more)

Microservices and HTTP/2 By @LMacVittie | @DevOpsSummit #DevOps #Docker #Containers #Microservices

Microservices & IoT Power Panel at @DevOpsSummit In this Power Panel at @DevOpsSummit, moderated by Jason Bloomberg, president of Intellyx, panelists Roberto Medrano, Executive Vice President at Akana; Lori MacVittie, Evangelist for F5 Networks; and Troy Topnik, ActiveState's Technical Product Manager; and Otis Gospodnetić, founder of Sematext; peeled away the buzz and discuss the important architectural principles behind implementing IoT solutions for the enterprise. As remote IoT devices and sensors become increasingly intelligent, they become part of our distributed cloud en... (more)

Observer Effect on Microservices Architecture | @DevOpsSummit #Devops #BigData #Microservices

The Impact of the Observer Effect on Microservices Architecture Application availability is not just the measure of "being up". Many apps can claim that status. Technically they are running and responding to requests, but at a rate which users would certainly interpret as being down. That's because excessive load times can (and will be) interpreted as "not available." That's why it's important to view ensuring application availability as requiring attention to all its composite parts: scalability, performance, and security. The paradox begins when we consider how we ensure scale,... (more)

Multiplexing: TCP vs HTTP2 | @DevOpsSummit #APM #DevOps #BigData

Can you use both? Of course you can! Here comes the (computer) science… One of the big performance benefits of moving to HTTP/2 comes from its extensive use of multiplexing. For the uninitiated, multiplexing is the practice of reusing a single TCP connection for multiple HTTP requests and responses. See, in the old days (HTTP/1), a request/response pair required its own special TCP connection. That ultimately resulted in the TCP connection per host limits imposed on browsers and, because web sites today are comprised of an average of 86 or more individual objects each needing its ... (more)