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F5 Friday: Programmability and Infrastructure as Code

#SDN #ADN #cloud #devops What does that mean, anyway? SDN and devops share some common themes. Both focus heavily on the notion of programmability in network devices as a means to achieve specific goals. For SDN it’s flexibility and rapid... Read more
0 Reviews

Infrastructure Architecture: Whitelisting with JSON and API Keys

Application delivery infrastructure can be a valuable partner in architecting solutions …. AJAX and JSON have changed the way in which we architect applications, especially with respect to their ascendancy to rule the realm of integration, i.e.... Read more
0 Reviews

DevCentral Top5 12/11/2009

There has been plenty to do the past couple of weeks, which means there's plenty to talk about today. Ranging from gaming to storage virtualization to interviews and more, I bring you my Top 5 picks of the week from DevCentral. And yes, of... Read more
0 Reviews

20 Lines or Less # 33 – Killer contest entries in 20 Lines or Less

What could you do with your code in 20 Lines or Less? That's the question I ask (almost) every week for the devcentral community, and every week I go looking to find cool new examples that show just how flexible and powerful iRules can be... Read more
0 Reviews

JSON versus XML: Your Choice Matters More Than You Think

Should the enterprise standardize on JSON or XML as their lingua franca for Web 2.0 integration? Or should they use both as best fits the application?The decision impacts more than just integration – it resounds across the entire... Read more
0 Reviews

JSON versus XML: Your Choice Matters More Than You Think

Should the enterprise standardize on JSON or XML as their lingua franca for Web 2.0 integration? Or should they use both as best fits the application?The decision impacts more than just integration – it resounds across the entire... Read more
0 Reviews

XAJAX Perfect Choice to Build Scalable Web Applications for Cloud Computing Environments

An interesting thing happens when you combine toolkits like XAJAX and SAJAX and the ability to perform content-based routing: you can actually achieve function-level load balancing in both cloud-based and traditional architectures. As you might... Read more
0 Reviews

AJAX and Network-Side Scripting

AJAX enables the use of network-side scripting enabled application delivery solutions to offload client-side functionality and improve capacity and performance of dynamic (Web 2.0/AJAX) applications. In the last couple of weeks I’ve embarked on a... Read more
1 Review

Rip and Replace Won’t Solve Twitter’s (Or Your) Security Problems

The “replace” in “rip and replace” essentially means getting rid of old security problems and replacing them with new ones. Twittergate is (thankfully) behind us but it’s almost assuredly going to be the case that we’ll be rehashing this one for... Read more
0 Reviews

Business-Layer Load Balancing

One of the interesting points that discussions around intercloud brings up is the need for infrastructure to, if you’ll pardon the use of marketing jargon, align with the business. What that really means is that applications and their supporting... Read more
0 Reviews

Can You Teach an Old Developer New Tricks?

When SOA was declared dead there was a spate of articles and blogs on why the architecture “died.” Most pundits came to the conclusion that like many innovations it wasn’t the technology to blame but rather people. Architects lacked the skills to... Read more
0 Reviews

Support, Social Technology, and Trust

As Don mentioned earlier this week, we took the plunge and entered Forrester's Groundswell contest. To me, I believe this is the ultimate testament to what you, the community, are doing on DevCentral everyday (check out this page - it's... Read more
0 Reviews

Layer 7 Switching + Load Balancing = Layer 7 Load Balancing

Modern load balancers (application delivery controllers) blend traditional load-balancing capabilities with advanced, application aware layer 7 switching to support the design of a highly scalable, optimized application delivery network.... Read more
Average Rating: 4.9
5 Reviews

One Size Does Not Fit All

Outside of the technology world a lot of products are billed as "one size fits all". Anyone who's purchased such a product generally knows, no, no they don't. They're close, but never a truly good fit. Inside the technology... Read more
0 Reviews

iRules: Dynamic WSDL Update

Remember way back when we talked about dynamically updating a WSDL to present the appropriate endpoint when being delivered through a BIG-IP? You may recall the basic problem: automatically generated WSDL docs contain the local web/application... Read more
0 Reviews

Web 2.0? Or Web 2.0?

As you've no doubt noticed, there is a bit of duplicate name confusion in the Web 2.0 world. Developers say "Web 2.0" and they mean SOA, dynamic binding, etc. When business people say "Web 2.0" they mean blogs, video, RSS... Read more
0 Reviews

KPiRules

KPI (Key Performance Indicators) are quantifiable metrics that can be measured against organizational goals. KPIs vary from business to business, based on what the company does. If it's a sales oriented company, a KPI might be something like... Read more
0 Reviews

Service Virtualization with iRules

Service virtualization is a term that began appearing soon after the introduction of XML focused appliances into SOA land. It refers to the capability of an intermediary [proxy] to present a different URI endpoint to the client than is actually... Read more
0 Reviews

WS-Context

One of the biggest challenges to service-oriented delivery of composite applications is the lack of an interoperable mechanism to support state and context. This is particularly challenging when considering that composite applications may be... Read more
0 Reviews

Climbing the Stack: Full SOA Participation

Using iRules and business rules to create a dynamic application-layer routing infrastructure that fully participates in your SOA You may recall that we've previously examined how to implement the SOA Router Pattern using iRules. We've... Read more
0 Reviews

Implementing SOA Patterns: The Service Firewall

SOA Enterprise Patterns has a great discussion of SOA security and patterns, including a nice article on the composite domains and implementation of a security pattern. There are several mechanisms through which the Service Firewall pattern can... Read more
0 Reviews

Implementing SOA Patterns: Input/Output Validator

The Input/Output Validator pattern takes advantage of decoupling to provide a single resource through which input to and output from services can be validated. In a nutshell, this pattern implements data integrity controls through which data is... Read more
0 Reviews

Implementing SOA Patterns: The Router

The Router Pattern is perhaps the simplistic of all SOA Patterns, with the exception of the Proxy Pattern. The Router Pattern is also the pattern that is most likely to be implemented in a network lke an application delivery controller (ADC). That... Read more
0 Reviews

iRules and WSDL

An agile application delivery solution One of the great things about SOA is that it's meta-data driven, and often that meta-data (e.g. WSDL) is dynamically generated to ensure it is up to date. So today when you query a web service for... Read more
0 Reviews