Collected thoughts about software and site performance ...
Web performance matters. Responsive sites can make the online experience effective, even enjoyable. A slow site can be unusable. This site is about online performance, how to achieve and maintain it, its impact on user experience, and ultimately on site effectiveness.
Home | Entries about Availability Management (3), in reverse date order:
Availability, on the other hand, is a measure of a system's stability. It is not a performance metric, it is a software (or hardware) quality metric.
So, technically speaking, performance and availability are orthogonal issues. Practically speaking, however, availability and responsiveness are interconnected concepts.
Web hosting, IT operations, and service level management
Yesterday (in my post about the weather) I introduced the subjects of time series and probability. Today I want to show how they apply to one aspect of performance management -- working with service availability data, which you are probably collecting from several different measurement tools.
Suppose you need to improve the availability of a critical e-business application ...
I am a mathematician at heart, and all mathematical conclusions are derived by deductive reasoning from a set of an initial set of assumptions (postulates or axioms). So it is natural for me to want to establish a clear foundation on which to build any discussion of performance matters.