Learn F5 Technologies, Get Answers & Share Community Solutions Join DevCentral

Filter by:
  • Solution
  • Technology

Articles

Sort results

WILS: Moore’s Law + Application (Un)Scalability = Virtualization

#Virtualization was inevitable. One of the interesting side effects of having been a developer before migrating to a more network-focused view of the world* is it’s easier to understand the limitations and constraints posed on networking-based... Read more
0 Reviews

WILS: Virtualization, Clustering, and Disaster Recovery

#virtualization Clustering is local. Disaster recovery is global. There are two levels of reliability for an application. There’s local and there’s global. We might want to consider it more simply as “inside” and “outside” reliability. ... Read more
0 Reviews

WILS: The Many Faces of TCP

#fasterapp Veno. Hybla. CTCP. HSTCP. Fast TCP. Not familiar with these variants? Read on… Anyone who’s involved with web application performance – either measuring or addressing – knows there are literally hundreds of RFCs designed to improve... Read more
0 Reviews

WILS: WPO versus FEO

Understanding web #acceleration techniques and when to apply them We’ve already discussed the difference between acceleration and optimization, so now it’s time to quickly dig into the difference between the two major types of acceleration: WPO... Read more
0 Reviews

WILS: Content (Application) Switching is like VLANs for HTTP

We focus a lot on encouraging developers to get more “ops” oriented, but seem to have forgotten networking pros also need to get more “apps” oriented. Most networking professionals know their relevant protocols, the ones they work with day in... Read more
0 Reviews

WILS: Controllers and Gateways

Why these two are very different but complementary technologies Have you ever wondered why one network product is called a “controller” while another seemingly similar in function solution is called a “gateway”? There’s actually a very good... Read more
0 Reviews

WILS: The Importance of DTLS to Successful VDI

One of the universal truths about user adoption is that if performance degrades, they will kick and scream and ultimately destroy your project. Most VDI (Virtual Desktop Infrastructure) solutions today still make use of traditional... Read more
0 Reviews

WILS: Load Balancing and Ephemeral Port Exhaustion

Understanding the relationship between SNAT and connection limitations in full proxy intermediaries. If you’ve previously delved into the world of SNAT (which is becoming increasingly important in large-scale implementations, such as those in... Read more
2 Reviews

WILS: Layer 7 (Protocol) versus Layer 7 (Application)

The problem with HTTP (okay, one of the problems with HTTP, happy now?) is that it resides at the top of the “stack” regardless of whether we identify the “stack” as based  upon the TCP/IP stack or the OSI model stack. In either case, HTTP... Read more
0 Reviews

WILS: SSL TPS versus HTTP TPS over SSL

The difference between these two performance metrics is significant so be sure you know which one you’re measuring, and which one you wanted to be measuring.  It may be the case that you’ve decided that SSL is, in fact, a good idea for... Read more
2 Reviews

WILS: How can a load balancer keep a single server site available?

Most people don’t start thinking they need a “load balancer” until they need a second server. But even if you’ve only got one server a “load balancer” can help with availability, with performance, and make the transition later on to a multiple... Read more
0 Reviews

WILS: What Does It Mean to Align IT with the Business

We’ve been talking about “aligning IT with the business” since SOA first took legs but you rarely see CONCRETE EXMAPLES OF WHAT THAT REALLY MEANS. It sounds much more grand and lofty than it really is. To put it in layman’s terms, or at least... Read more
0 Reviews

WILS: Client IP or Not Client IP, SNAT is the Question

Ever wonder why requests coming through proxy-based solutions, particularly load balancers, end up with an IP address other than the real client? It’s not just a network administrator having fun at your expense. SNAT is the question – and the... Read more
0 Reviews

WILS: Three Ways To Better Utilize Resources In Any Data Center

Cloud computing is, at its core, about using resources in the most operational and financially efficient manner possible. It’s about spreading resources around and sharing them to achieve greater scalability with fewer investments in hardware and... Read more
0 Reviews

WILS: Why Does Load Balancing Improve Application Performance?

WILS: The Concise Guide to *-Load Balancing WILS: Network Load Balancing versus Application Load Balancing WILS: InfoSec Needs to Focus on Access not Protection WILS: Applications Should Be Like Sith Lords WILS: Cloud Changes ... Read more
0 Reviews

WILS: A Good Hall Monitor Actually Checks the Hall Pass

Are you monitoring the network, servers, stack, or the application? The answer may mean the difference between your application being available or not. One of the biggest problems with moving away from simple load balancing to application... Read more
0 Reviews

WILS: The Concise Guide to *-Load Balancing

Understanding the various types of load balancing When someone says “load balancing” the immediate reaction is usually to think of pools of servers and applications being load balanced to provide high-availability for massive sites like Amazon or... Read more
0 Reviews

WILS: Network Load Balancing versus Application Load Balancing

Are you load balancing servers or applications? Network traffic or application requests? If your strategy to application availability is network-based you might need a change in direction (up the stack).   ... Read more
0 Reviews

WILS: Automation versus Orchestration

Infrastructure 2.0 is not just about automation, but rather is about the orchestration of processes, which are actually two different things: the former is little more than advanced scripting, the latter requires participation and decision making... Read more
0 Reviews

WILS: Cloud Changes How But Not What

Cloud changes how we deliver applications but we’re still delivering applications With all the hype around cloud it’s easy to get caught up in deployment models and architectures and how much money it is/is not going to save us and, of course,... Read more
0 Reviews

WILS: Application Acceleration versus Optimization

Why do application delivery vendors talk about both? Aren’t they the same thing? In general, acceleration implies that something will be done to the application: caching, compression, etc… The actual behavior of the application is changed such... Read more
0 Reviews

WILS: InfoSec Needs to Focus on Access not Protection

Back when I was developing GIS data translation software I had to fight security all the time. My desktop was so locked down I couldn’t compile  the code because I didn’t even have appropriate permission to access the file system. Why? The... Read more
0 Reviews

Write It Like Seth

If you happened to read my post this morning (WILS: Applications Should Be Like Sith Lords) you might be wondering if the cat got my tongue this morning or if perhaps I’ve lost the ability to ramble on write passionately about application... Read more
0 Reviews

WILS: Applications Should Be Like Sith Lords

When you’re thinking about deploying an application it would be good to remember Yoda’s words regarding the Sith: Always two there are, a master and an apprentice. ALWAYS TWO THERE ARE Like Sith Lords, there should always be two... Read more
0 Reviews