A question that every online application provider will face eventually is:
Does my application scale? Can I add an extra 100 users and still ensure the
same user experience? If the application architecture is properly designed
the easiest way is to put an additional server behind the load balancer to
handle more traffic.
In this article we recount an incident that happened to one of our clients
when the cause of poor application performance was eventually attributed to
problems with the load balancing of the application servers.
HTTP Server (500) Errors Go Over the Roof
Around 8 am the Operations team at Rendoosia Inc. (name changed for
commercial reasons) got an alert from the APM tool that one of three
SharePoint servers was generating many HTTP Server (500) errors. All three
servers were behind a load balancer; hence why the team decided to analyze
the overall p... (more)
The saying "if it doesn't exist on the Internet, it doesn't exist" is
ringing truer every day. Nowadays, it is hard to imagine most businesses
without an e-commerce platform, let alone without a web presence at all.
Since e-commerce is becoming the new standard, e-commerce performance needs
to be at its best.
In this blog series, I have come up with several ways to ensure your
company's e-commerce performance success, including: avoiding unnecessary
network load,reducing number of (internal) HTTP errors, improving backend
performance,understanding your clients, ensuring scal... (more)
Citrix XenApp or XenDesktop is a perfect fit for lowering the costs of
desktop management and simplifying access to the hosted applications from any
device. Last week we discussed some challenges to application performance
monitoring (APM) introduced by Citrix. Apart from getting yet another
component in the data center to take care of, the virtualized application
delivery becomes "black boxed" from the APM perspective. It gets harder to
isolate the fault domain to the network, the infrastructure, or the
In the previous post we presented the case of The ... (more)
Introducing SAP is a cost that makes everyone very cautious about the return
on this investment. Performance problems with SAP delivery can quickly
propagate to seriously affect business operations and lead to tedious war
room scenarios. End-user complaints will usually point towards the SAP team,
the SAP team will blame the network, and IT operations team will fight back.
But what if the root cause of the problem is something altogether different.
The inability to quickly determine the root cause of the performance problem
often leads to war room scenarios, especially when the mo... (more)
In my previous posts I wrote about how important it is to have end-to-end
visibility into SAP in order to avoid serious problems in our delivery chain
or to discover that application performance degradation was caused by
One of our New Zealand customers, Fonterra, who is the world's largest
exporter of dairy products, uses SAP to support its delivery chain of dairy
products made from 22 billion liters of milk collected each year.
In this article we show how Fonterra uses a new generation of APM tools that
provide both user and transactional insight, as we... (more)