Performance Metrics 101: Page Size (Total Downloaded Bytes)
By Kameerath Kareem
This blog will be a series of posts that will discuss some of the most
important performance metrics. We will analyze real-time data and compare the
top performing websites with those at the lower end of the spectrum. Best
practices will be discussed in detail to help those who want to build
websites that are optimized, without having to compromise on the design or
Website development has come a long way – from a few simple lines of static
HTML and drab layouts to dynamic pages with fluid and interactive designs.
Websites are now a complex web of advanced HTML, intuitive code, heavy media
content, images, and third-party plugins.
Inevitably, this has created bloated websites which directly affects the end
user experience. The world of technology has risen to support modern websit... (more)
Security (SSL) Has a Performance Tax
By Mehdi Daoudi
While on a call with a customer last week, I was faced with the question
of why the customer’s site had slowed down, even after they had
switched to full SSL.
Well, to be honest, it’s pretty obvious; SSL is more expensive from a web
performance perspective. However, it wasn’t until I saw this chart that I
realized how bad it has gotten.
Every metric jumped, and jumped by a lot! The worrisome spikes here are
obviously the render start, onload, and webpage response.
The problem is that when you introduce SSL, you are also forcin... (more)
Has SaaS Become Mission Critical for You?
By Peter van Gils
Software as a Service has been around for a while. In its early years—late
1990s-early 2000s—it was mostly aimed at individual and departmental use,
but in more recent years SaaS has been deployed at the enterprise level.
There are companies that don’t use anything else.
In the beginning, SaaS was used by companies more for productivity
applications like web conferencing, managing travel expenses and sales
contacts, or time-tracking than for core business applications.
Since then, a lot has changed. SaaS is no longer a ni... (more)
DNS Experience Tests: A Key Cog in the Online Ecosystem
By Mehdi Daoudi
A company’s collection of online systems is like a delicate ecosystem –
all components must integrate with and complement each other, and one single
malfunction in any of them can bring the entire system to a screeching halt.
That’s why, when monitoring and analyzing the health of your online
systems, you need a broad arsenal of different tools for your different
needs. In addition to a wide-angle lens that provides a snapshot of the
overall health of your system, you must also have precise, scalpel-like tools ... (more)
A Practical Guide to SLAs
By Mehdi Daoudi
While visiting a customer last week (a large SaaS platform company),
we started to have an interesting discussion around Service Level Agreements
(SLAs) during which he encouraged me to write this blog.
When I was tasked with setting up the QoS Team at DoubleClick in 1999, the
primary mission was to setup a monitoring team (internal, external, etc.)
and the secondary mission was actually an accidental one: to manage our SLAs.
This became a hot priority in 2001, we paid out over $1 million (in real
money) in penalties for SLA violations to ... (more)