If everyone is thinking the same, someone isn't thinking

Lori MacVittie

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Top Stories by Lori MacVittie

Proxies are one of the more interesting (in my no-doubt biased opinion) “devices” in the network. They’re the basis for caching, load balancing, app security, and even app acceleration services. They’re also a bridge between dev and ops and the network, being commonplace to all three groups and environments in most data center architectures. But not all proxies are built on the same architectural principles, which means not all proxies are created equal. A large number of proxies are half-proxies while others are full-proxies, and the differences between them are what mean the difference between what you can and cannot do with them. In fact, there are three very important things you can do with a full-proxy that you can’t do with a regular old proxy. Before we jump into those three things, let’s review the differences between them, shall we? Half-Proxy Half-proxy i... (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)

Cloud's Provisioning Problem | @DevOpsSummit #IoT #DevOps #BigData

What DevOps Can Do About Cloud's Predictable Provisioning Problem Go ahead. Name a cloud environment that doesn't include load balancing as the key enabler of elastic scalability. I've got coffee... so it's good, take your time... Exactly. Load balancing - whether implemented as traditional high availability pairs or clustering - provides the means by which applications (and infrastructure, in many cases) scale horizontally. It is load balancing that is at the heart of elastic scalability models, and that provides a means to ensure availability and even improve performance of app... (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)

Programmability in the Network: Filtering Favicons By @LMacVittie | @DevOpsSummit #DevOps

There’s really an unlimited number of ways in which programmability in the network (data path scripting) can solve problems, address risk, and simplify architectures. In the area of DevOps it can be used to facilitate continuous delivery (CD) initiatives by supporting the implementation of a variety of architectures like Blue/Green, Canary, and even A/B testing patterns. In the network, where SDN (Software Defined Networking) holds sway, the usage of data path scripting can enable modern, sometimes complex application architectures that overcome network complexity associated with... (more)