Welcome!

Blog Feed Post

DevCentral Top5 08/07/2009

As the extended DevCentral crew continues to crank through the summer months, churning out more and more awesome content, there is lots to see. Whether you're looking for short, easily consumable pieces of media to get you pointed in the right direction or longer posts about the practicality of running your crew or your servers close to the ragged edge, I've got both for you this week. Check out this week's Top5:

 

pyControl Apps #2 - Deleting BIG-IP Routes

http://devcentral.f5.com/Default.aspx?tabid=63&articleType=ArticleView&articleId=2318

In Jason's continuation of the pyControl Apps series he continues to walk you through how to get moving with pyControl to perform some useful actions on your BIG-IP. In this installment Jason walks through how to delete the routes that he showed you how to create in the last pyControl Apps article. He continues to expand upon the idea of using python and iControl together, giving you building blocks to a larger application or utility that could eventually do one of many possible things in your deployment. I'm curious to see what comes next in the series and this one is worth a quick read.

 

Audio White Paper - Load Balancing 101 Nuts and Bolts

http://devcentral.f5.com/weblogs/interviews/archive/2009/08/06/audio-white-paper-load-balancing-101-nuts-and-bolts.aspx

If you're still not 100% clear on load balancing, Application Delivery Networking, and their role in your application's world, here's a great way to clear all of that up. Pete Silva takes a few minutes to clarify in very simple terms what all of these things are and what they can do. He covers everything from the basic terminology of the devices and configurations to the life cycle of a connection within the Load Balancer's world to in-line manipulation of content at the network level. In this audio version of the load balancing 101 whitepaper Pete gives a solid basis to work with for anyone that is just getting their feet wet in the LB / ADC world(s). If you're (or someone you know is) looking for a place to get started, this wouldn't be a bad place. Make sure you check out the pdf linked to in the post for the diagrams and shiny pictures.

 

There's a New iRule Editor in Town

http://devcentral.f5.com/weblogs/Joe/archive/2009/08/05/theres-a-new-irule-editor-in-town.aspx

The iRule Editor, for those of you that have been living under a rock or in a particularly out of the way cave for quite some time now, is an amazingly powerful tool for writing, deploying, testing, troubleshooting and archiving iRules. It's my go-to tool every time I even think about looking at or coding an iRule. It was that good before, and it just got better. Joe has implemented some fixes to bugs in the previous versions and some shiny new enhancements such as new GTM only iRules commands. If you've been using this, grab the new version. It's better, faster, stronger…you get the idea. If you haven't been using this and you use, are thinking about using, or come within 4 square miles of contact with an iRule I highly, highly recommend you pick this up and take a look. It's game-changing in the iRules dev experience. It's so good, in fact, that word on the street is that someone who will remain un-named may be looking into a Linux version as well for all of those non-MS types. Check it out, you won't regret it.

 

Formula for Quantifying Productivity of Web Applications

http://devcentral.f5.com/weblogs/macvittie/archive/2009/08/04/a-formula-for-quantifying-productivity-of-web-applications.aspx

More is not always better. More utilization, even when there is more overhead technically available is not always a good thing. Lori points this out quite well and far better than I could in her recent blog post. Her discussion around the maximum realistic capacity of people/devices and the amount of fallout there is for pushing past that is something that I've understood inherently for some time, but enjoyed seeing put down in black and white. Yes, if your server is at 75% capacity you can technically squeeze another 24% utilization out of it. Realistically though, bad things will happen. Read more to find out what, why, and what to do about it.

 

20 Lines or Less #27

http://devcentral.f5.com/weblogs/cwalker/archive/2009/08/06/20-lines-or-less-27.aspx

Yes, another 20LoL in the Top5. Yes, I really think it's that cool. Three more examples of what can be done with the power of iRules in less than 21 lines of code warrants a spot this week. This week we've got an example dealing with switch statements, one dealing with pool information in HTTP headers, and one that has to do with mod_rewrite rewriting. If you're looking for code snippets that you can grab and use or store for later, or if you're just trying to figure out what the possibilities are with this whole iRules thing, this series is a great place to check things out. Take a look at the 27th edition and see what you think. Then, if you like what you read, dig back through the previous 26 for over 70 code samples of nifty iRule-ey goodness.

 

There's your Top5 for the week. I hope, as always, that you've not only enjoyed it but found it useful. Feel free to drop me a line about what you'd like to see, what you're missing, or general comments and feedback. Otherwise, I'll be back soon with 5 more from DevCentral.

#Colin

Read the original blog entry...

More Stories By Colin Walker

Coming from a *Nix Software Engineering background, Colin is no stranger to long hours of coding, testing and deployment. His personal experiences such as on-stage performance and the like have helped to foster the evangelist in him. These days he splits his time between coding, technical writing and evangalism. He can be found on the road to just about anywhere to preach the good word about ADCs, Application Aware networking, Network Side Scripting and geekery in general to anyone that will listen.

Colin currently helps manage and maintain DevCentral (http://devcentral.f5.com). He is also a contributor in many ways, from Articles to Videos to numerous forum posts, to iRules coding and whatever else he can get his hands on that might benefit the community and allow it to continue to grow.

Latest Stories
"Space Monkey by Vivent Smart Home is a product that is a distributed cloud-based edge storage network. Vivent Smart Home, our parent company, is a smart home provider that places a lot of hard drives across homes in North America," explained JT Olds, Director of Engineering, and Brandon Crowfeather, Product Manager, at Vivint Smart Home, in this SYS-CON.tv interview at @ThingsExpo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
SYS-CON Events announced today that Conference Guru has been named “Media Sponsor” of the 22nd International Cloud Expo, which will take place on June 5-7, 2018, at the Javits Center in New York, NY. A valuable conference experience generates new contacts, sales leads, potential strategic partners and potential investors; helps gather competitive intelligence and even provides inspiration for new products and services. Conference Guru works with conference organizers to pass great deals to gre...
DevOps is under attack because developers don’t want to mess with infrastructure. They will happily own their code into production, but want to use platforms instead of raw automation. That’s changing the landscape that we understand as DevOps with both architecture concepts (CloudNative) and process redefinition (SRE). Rob Hirschfeld’s recent work in Kubernetes operations has led to the conclusion that containers and related platforms have changed the way we should be thinking about DevOps and...
The Internet of Things will challenge the status quo of how IT and development organizations operate. Or will it? Certainly the fog layer of IoT requires special insights about data ontology, security and transactional integrity. But the developmental challenges are the same: People, Process and Platform. In his session at @ThingsExpo, Craig Sproule, CEO of Metavine, demonstrated how to move beyond today's coding paradigm and shared the must-have mindsets for removing complexity from the develop...
In his Opening Keynote at 21st Cloud Expo, John Considine, General Manager of IBM Cloud Infrastructure, led attendees through the exciting evolution of the cloud. He looked at this major disruption from the perspective of technology, business models, and what this means for enterprises of all sizes. John Considine is General Manager of Cloud Infrastructure Services at IBM. In that role he is responsible for leading IBM’s public cloud infrastructure including strategy, development, and offering m...
The next XaaS is CICDaaS. Why? Because CICD saves developers a huge amount of time. CD is an especially great option for projects that require multiple and frequent contributions to be integrated. But… securing CICD best practices is an emerging, essential, yet little understood practice for DevOps teams and their Cloud Service Providers. The only way to get CICD to work in a highly secure environment takes collaboration, patience and persistence. Building CICD in the cloud requires rigorous ar...
Companies are harnessing data in ways we once associated with science fiction. Analysts have access to a plethora of visualization and reporting tools, but considering the vast amount of data businesses collect and limitations of CPUs, end users are forced to design their structures and systems with limitations. Until now. As the cloud toolkit to analyze data has evolved, GPUs have stepped in to massively parallel SQL, visualization and machine learning.
"Evatronix provides design services to companies that need to integrate the IoT technology in their products but they don't necessarily have the expertise, knowledge and design team to do so," explained Adam Morawiec, VP of Business Development at Evatronix, in this SYS-CON.tv interview at @ThingsExpo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
To get the most out of their data, successful companies are not focusing on queries and data lakes, they are actively integrating analytics into their operations with a data-first application development approach. Real-time adjustments to improve revenues, reduce costs, or mitigate risk rely on applications that minimize latency on a variety of data sources. In his session at @BigDataExpo, Jack Norris, Senior Vice President, Data and Applications at MapR Technologies, reviewed best practices to ...
Widespread fragmentation is stalling the growth of the IIoT and making it difficult for partners to work together. The number of software platforms, apps, hardware and connectivity standards is creating paralysis among businesses that are afraid of being locked into a solution. EdgeX Foundry is unifying the community around a common IoT edge framework and an ecosystem of interoperable components.
"ZeroStack is a startup in Silicon Valley. We're solving a very interesting problem around bringing public cloud convenience with private cloud control for enterprises and mid-size companies," explained Kamesh Pemmaraju, VP of Product Management at ZeroStack, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
Large industrial manufacturing organizations are adopting the agile principles of cloud software companies. The industrial manufacturing development process has not scaled over time. Now that design CAD teams are geographically distributed, centralizing their work is key. With large multi-gigabyte projects, outdated tools have stifled industrial team agility, time-to-market milestones, and impacted P&L stakeholders.
"Akvelon is a software development company and we also provide consultancy services to folks who are looking to scale or accelerate their engineering roadmaps," explained Jeremiah Mothersell, Marketing Manager at Akvelon, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
Enterprises are adopting Kubernetes to accelerate the development and the delivery of cloud-native applications. However, sharing a Kubernetes cluster between members of the same team can be challenging. And, sharing clusters across multiple teams is even harder. Kubernetes offers several constructs to help implement segmentation and isolation. However, these primitives can be complex to understand and apply. As a result, it’s becoming common for enterprises to end up with several clusters. Thi...
"Infoblox does DNS, DHCP and IP address management for not only enterprise networks but cloud networks as well. Customers are looking for a single platform that can extend not only in their private enterprise environment but private cloud, public cloud, tracking all the IP space and everything that is going on in that environment," explained Steve Salo, Principal Systems Engineer at Infoblox, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Conventio...