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Lori MacVittie

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Latest Blogs from Lori MacVittie
#webperf #ado Choice of load balancing algorithms is critical to ensuring consistent and acceptable performance   One of the primary reasons folks use a Load balancer is scalability with a secondary driver of maintaining performance. We all know the data exists to prove that "sec...
When load balancing, "fastest" response time is relative.
#webperf #ado When load balancing, "fastest" response time is relative.                            
#webperf #ado Meeting user expectations of fast and available applications becomes more difficult as you relinquish more and more control… User expectations with respect to performance are always a concern for IT. Whether it's monitoring performance or responding to a fire drill beca...
#OpenStack #CloudStack #OpenFlow #SDN It's a showdown of model versus control – or is it?   There's a lot of noise about "wars" in the networking world these days. OpenStack versus CloudStack versus OpenFlow-based SDN. But while there are definitely aspects of "stacks" that sha...
#OpenStack #CloudStack #OpenFlow #SDN It's a showdown of model versus control – or is it?   There's a lot of noise about "wars" in the networking world these days. OpenStack versus CloudStack versus OpenFlow-based SDN. But while there are definitely aspects of "stacks" that sha...
#SDN Programmability on its own is not enough, a strong community is required to drive the future of network capabilities One of the lesser mentioned benefits of an OpenFlow SDN as articulated by ONF is the ability to "customize the network". It promotes rapid service introd...
#SDN Programmability on its own is not enough, a strong community is required to drive the future of network capabilities One of the lesser mentioned benefits of an OpenFlow SDN as articulated by ONF is the ability to "customize the network". It promotes rapid service introd...
#caim Because knowing is half the battle in application performance management One of the processes used to determine the root cause of a problem by Six Sigma is called The Five Whys. In a nutshell, it's a method of continually asking "why" something happened to eventually arrive ...
#caim Because knowing is half the battle in application performance management One of the processes used to determine the root cause of a problem by Six Sigma is called The Five Whys. In a nutshell, it's a method of continually asking "why" something happened to eventually arrive ...
Most folks probably remember the play on "to err is human…" proverb when computers first began to take over, well, everything. The saying was only partially tongue-in-cheek, because as we've long since learned the reality is that computers allow us to make mistakes faster and more of...
#devops Automating incomplete or ineffective processes will only enable you to make mistakes faster – and more often. Most folks probably remember the play on "to err is human…" proverb when computers first began to take over, well, everything. The saying was only partially tong...
It's likely that IT network and security staff would agree that HTML5 WebSockets has the potential for high levels of disruptions (and arguments) across the data center. Developers want to leverage the ability to define their own protocols while reaping the benefits of the HTTP-as-appl...
According to Netcraft, who tracks these kinds of things, SSL usage has doubled from 2008 and 2011. That's a good thing, as it indicates an upswing in adherence to security best practices that say "SSL Everywhere" just makes good sense. The downside is overhead, which despite improveme...
#HTML5 #SDN The increasing use of HTML5 WebSockets illustrates one of the lesser mentioned value propositions of SDN – and ADN: extensibility. It's likely that IT network and security staff would agree that HTML5 WebSockets has the potential for high levels of disruptions (and argum...
Nearly everyone has played musical chairs – as a child if not as an adult with a child. When that music stops there's a desperate scrambling to pair up with a chair lest you end up sitting on the sidelines watching the game while others continue to play until finally, one stands alone....
#bigdata #infosec Fat apps combined with SSL Everywhere strategies suggest a need for more powerful processing in the application delivery tier  According to Netcraft, who tracks these kinds of things, SSL usage has doubled from 2008 and 2011. That's a good thing, as it indicates ...
Whether bees or Martians, science or science-fiction, the notion of a hive mind is one that pops up frequently within the realm of psychology, philosophy, theology, science and, last but not least, technology. A hive mind is one that has a collective memory, sharing information from th...
Now things are starting to get interesting… Nearly everyone has played musical chairs – as a child if not as an adult with a child. When that music stops there's a desperate scrambling to pair up with a chair lest you end up sitting on the sidelines watching the game while others con...
#SDN #cloud #openstack Centralized control, decentralized execution comes to life with Midokura's MidoNet Whether bees or Martians, science or science-fiction, the notion of a hive mind is one that pops up frequently within the realm of psychology, philosophy, theology, science and, ...
Remote display and control technology is nothing new. For decades we've had the ability to remotely access and control our desktops using a variety of technologies and protocols: X11, VNC, RDP, and Terminal Services to name a few of the more well-known. Remote display and control has ...
#HTML5 #VDI #mobile Thin is back in.  Remote display and control technology is nothing new. For decades we've had the ability to remotely access and control our desktops using a variety of technologies and protocols: X11, VNC, RDP, and Terminal Services to name a few of the more w...
#SDN #openflow A session at #interop sheds some light on SDN operational models One of the downsides of speaking at conferences is that your session inevitably conflicts with another session that you'd really like to attend. Interop NY was no exception, except I was lucky enough to ...
#SDN #openflow A session at #interop sheds some light on SDN operational models One of the downsides of speaking at conferences is that your session inevitably conflicts with another session that you'd really like to attend. Interop NY was no exception, except I was lucky enough to ...
The web has gone from integration via hypertext to integration via hyperdata. A friend shared a recent C|Net article discussing the use of 404 error pages to feature missing children notices. Following links leads to a European effort to integrate information about missing children i...
#bigdata The web has gone from integration via hypertext to integration via hyperdata.  A friend shared a recent C|Net article discussing the use of 404 error pages to feature missing children notices. Following links leads to a European effort to integrate information about missing ...
#SDN #vmworld F5 Solutions Combine with VMware VXLAN to Support Software Defined Networking As efforts around SDN (Software-Defined Networking) continue to explode faster than the price of gas it has begun to diverge into several different focal points. Each area of focus tends...
#SDN #vmworld F5 Solutions Combine with VMware VXLAN to Support Software Defined Networking As efforts around SDN (Software-Defined Networking) continue to explode faster than the price of gas it has begun to diverge into several different focal points. Each area of focus tends...
#infosec #devops #bigdata #cloud IT security initiatives can benefit from a devops approach enabled with a flexible framework What do you get when you mix some devops with compliance and its resulting big data? Okay, aside from a migraine just thinking about that concept, what d...
#infosec #devops #bigdata #cloud IT security initiatives can benefit from a devops approach enabled with a flexible framework What do you get when you mix some devops with compliance and its resulting big data? Okay, aside from a migraine just thinking about that concept, what d...
Why active-active is not best practice in the data center, and shouldn't be in the cloud either. Last time we dove into a "Load Balancing 101" discussion we looked at the difference between architected for scale and architected for fail. The question that usually pops up after such ...
Back in the day when virtualization and cloud were just making waves, one of the first challenges made obvious was managing IP addresses. As VM density increased, there were more IP network management tasks that had to be handled – from distributing and assigning IP addresses to VLAN c...
#cloud #virtualization Why active-active is not best practice in the data center, and shouldn't be in the cloud either. Last time we dove into a "Load Balancing 101" discussion we looked at the difference between architected for scale and architected for fail. The question that usual...
…is that they're consumer cloud services. While we're all focused heavily on the challenges of managing BYOD in the enterprise, we should not overlook or understate the impact of consumer-grade services within the enterprise. Just as employees bring their own devices to the table, s...
#virtualization #VDI Unifying desktop management across multiple branch offices is good for performance – and operational sanity. When you walk into your local bank, or local retail outlet, or one of the Starbucks in Chicago O'Hare, it's easy to forget that these are more than you...
#virtualization #VDI Unifying desktop management across multiple branch offices is good for performance – and operational sanity. When you walk into your local bank, or local retail outlet, or one of the Starbucks in Chicago O'Hare, it's easy to forget that these are more than you...
…is that they're consumer #cloud services. While we're all focused heavily on the challenges of managing BYOD in the enterprise, we should not overlook or understate the impact of consumer-grade services within the enterprise. Just as employees bring their own devices to the table, s...
One of the phrases you hear associated with cloud computing is "architecting for failure." Rather than build in a lot of hardware-level redundancy – power, disk, network, etc… – the idea is that you expect it to fail and can simply replace the application (which is what you care about ...
Microsoft Exchange load balancing is just the beginning… Throughout the years, F5 BIG-IP has been a critical component supporting Microsoft Exchange to implement a variety of performance, security, and architectural requirements. During that time, we've seen Microsoft Exchange ev...
#cloud Elasticity is a design pattern for scalability, not necessarily failability. One of the phrases you hear associated with cloud computing is "architecting for failure." Rather than build in a lot of hardware-level redundancy – power, disk, network, etc… – the idea is that y...