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
that can isolate and analyze all of those different components (DNS, CDNs,
internal and external servers, third-party tags, etc.).
Catchpoint was designed to be that exact kind of precision tool. When
evaluating the health of your systems, a simple availability test is useful,
but it only a... (more)
Catchpoint's Top 10 Blog Posts of 2015
by Maria Eldridge
Web performance issues and advances have been gaining a stronger presence in
the headlines as people are becoming more aware of its impact on virtually
every business, and 2015 was no exception. We saw a myriad of major outages
this year hit some of the biggest corporations, as well as some technology
integrations and other news that we IT Ops aficionados find very exciting.
This past year has offered several opportunities for growth and evolution in
the performance realm — even the worst failures presented valuable lessons ... (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)
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)
Capacity Matters (Perhaps More Than You Think)
By J. Scotte Barkan
A very wise man in a movie once put it, “It’s good for a man to know his
limitations.” When it comes to a computer system, it’s essential.
Understanding your capacity is a healthy part of running a business. Any
business must understand what it needs in terms of its personnel (and the
resources to support those personnel) to support and sustain itself.
A technology business must take this understanding further in terms of its
networking, hardware, and software infrastructure.
There are several levels of understandin... (more)