Posted in
Main on September 1st, 2008 by Pingdom
Twitter seems to be making good on their promise to improve the stability of their microblogging service, at least when it comes to the website itself (which is what we monitor here at Pingdom). Lately, their website has shown a significant improvement in both availability and response time. Is the infamous Twitter “fail whale” facing an early retirement?
Here is the downtime for www.twitter.com for the last three months:
- June: 11h 36m
- July: 4h 12m
- August: 1h 3m
August is showing a significant improvement over previous months. The August downtime of just over one hour is the best Twitter has done since our monitoring of them started back in February 2007.
The improvement is also reflected in the load time of their website. Here is the response time curve for the last three months (HTML load time) for www.twitter.com:

As you can see in the graph above, August has been a solid month for Twitter with very even performance (at least when it comes to accessing their website, i.e. the Twitter login page).
We would like to congratulate the Twitter team on their progress. It looks like their hard work is paying off!
(It should be mentioned that we are a bit biased… Twitter is a Pingdom customer. That said, the monitoring results shown here come from monitoring that has been set up separately by us here at Pingdom.)

Posted in
Main on July 3rd, 2009 by Pingdom
Google’s App Engine suffered from increased data access latency and errors yesterday, including problems serving applications. According to TechCrunch, the problems lasted for approximately six hours.
From the App Engine status page:
On July 2nd, all applications experienced increased error rate and latency with read and write Datastore and memcache operations, as well as some serving errors. Datastore access and serving have been fully restored as of 12:25 PM PDT.
What happened yesterday exposed a couple of interesting weaknesses for App Engine.
Read more
Posted in
Pingdom on July 1st, 2009 by Pingdom
We have exciting news to share. As you may have noticed, we made some changes to the Pingdom website yesterday, and the main thing we added was a new account type that many of you are going to love: Pingdom Free.
Now, for the first time ever, you can use Pingdom for free. We’re not talking about a free trial, but a completely free account that you can use for as long as you like, no strings attached.
In other words, you are getting a professional uptime monitoring service for free. With the Pingdom service, you’ll be the first to know when your site goes down.
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Posted in
Main on June 30th, 2009 by Pingdom

If you’ve been following this blog for a while, you’ll know that we love everything geeky, and we have often put together themed galleries that appeal to tech geeks like ourselves.
Here is a collection of some of the geekiest galleries that have come and gone on this blog.
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Posted in
Main on June 26th, 2009 by Pingdom
Wordpress.com, the popular blogging service from Automattic, has some interesting growth statistics posted on its website. Among other things, there is a graph showing how many new blogs are created on the service each day.
Based on the graphs that Automattic provides us with, it’s actually not that difficult to estimate how much Wordpress.com will grow in 2009. Which, of course, was a temptation we couldn’t resist!
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Posted in
Main on June 24th, 2009 by Pingdom
Operating systems on supercomputers used to be custom-made affairs, but this has changed. These days, Linux has become a popular choice for supercomputers. But how popular? You may be surprised.
Top500.org maintains a list of the fastest supercomputers in the world. A new list was published yesterday (it happens twice a year), so we took the opportunity to go through the list and find out what OS the top 20 supercomputers are using.
It took some work, but the results are interesting.
Read more
Luke Gedeon
September 1st, 2008 at 9:12 pm
Is the lower downtime because of lower volume though? Many of the high-volume users have left or scaled back usage, or they have been throttled.
Also without twitter going to IM, I have about forgotten about it. I wonder if the lower downtime is because they are just not cool anymore.
Andrew Finkle
September 2nd, 2008 at 7:26 am
This graph also coincides with the summer, historically this is the slowest time of the year for Internet usage. Though I hope that this accurately shows an improvement in infrastructure, the verdict is still out in my opinion. I think there are more important improvements that Twitter can make at this time anyway (as I outlined on my blog).
Pingdom
September 2nd, 2008 at 10:43 am
Thanks for the feedback so far!
@Andrew: Pingdom is a Swedish company, and here in Sweden the main summer holiday period covers late June, July and early August. Twitter isn’t huge in Sweden, though, so US vacation should be a much bigger factor (especially considering the difference in population size…)
Out of curiosity, when is the main summer holiday period in the US? Is that August?
You have a point in that this could be a factor, but the change was sudden enough to lead us to believe that something was done “behind the scenes” at Twitter, i.e. they made something to speed up their website.
@Luke: You may have a point, but the traffic trend to Twitter.com seems to contradict this. It shows a clear, upward trend:
http://trends.google.com/websites?q=twitter.com&geo=all&date=all&sort=0
Ed Shaz
September 2nd, 2008 at 2:02 pm
Scott,
The peak Summer vacation season for the US, is
June through August. Essentially, a day after
most children get out of school for Summer break
until school resumes (much of the nation today 9/2).
I believe Twitter will continue to trend upward.
Doomsayers are not looking at the big picture.
The whale can pull a Chitty Chitty Bang Bang,
and will fly.
Thanks for your post,
Ed
Karthick Prabu
September 3rd, 2008 at 8:08 am
In addition to the ‘whale’ error page, I got another error page while browsing twitter. Refer http://www.kprabu.com/2008/08/twiitercom-error-page.html for the screenshot. Any body else got this error?
Evan Williams
September 3rd, 2008 at 9:33 am
Thanks for noticing! We still have a lot to do, but feels like we’re making progress.
To those that are wondering: No, it is not because of lower volume. In August, Twitter saw significantly higher traffic than ever before.
@karthick Not sure what that is; will look into it.
Pingdom
September 4th, 2008 at 2:09 am
@Evan: Thanks for taking the time to comment! (For those who don’t know, he’s one of the founders of Twitter.)
Eric Marden
September 7th, 2008 at 3:57 pm
@Evan, what about the missing track and IM features? What effect has that had on making it easier to scale?