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Tag Archives: performance
Use powershell to run a command against all instances in a memcached cluster
We are in the process of deploying memcached in one of our applications to server as a flexible, lightweight distributed cache. I’ve been familiar with the technology for years, but this was my first time to be able to directly … Continue reading
Performance: generate web traffic load using a powershell script
The other day, I found myself wanting a quick and dirty way to throw a controlled amount of load against a server for the purpose of tuning some thread settings. What I wanted was to simulate varying numbers of concurrent … Continue reading
HTML Shortcut: Dynamically populate a select list drop down when it is first clicked
e were recently making some modifications to a configuration options page. The page was set up a type of table, where each record had its own row, and each column represented a different type of data that could be edited. … Continue reading
Map of the world’s submarine data cables highlight challenges of routing internet traffic
I came across a very interesting site today – http://www.cablemap.info. It’s an overlay of the world’s submarine data transmission cables on top of google maps, allowing you to see how the world interconnects. It appears to be the work of … Continue reading
How Akamai routes traffic (hint: it’s not always dynamic)
I thought I had a full grasp of how Akamai routing works, but a recent dive into our web logs has taught me that world of high speed internet traffic routing is more nuanced. One of the big selling points … Continue reading
Performance: Yes, time-taken in IIS includes network time
I’ve written previously about many of the useful types of analysis you can perform using the time-taken field in your web logs. However, I would be remiss for not pointing out some limitations of the data it provides. When poring … Continue reading
Solved: ASP.NET Web Services using POST only work on localhost by default
This information isn’t exactly secret, but it took a bit of googling around to piece the answer together, so I wanted to share it in a more condensed form. We are in the process of migrating some legacy ASP … Continue reading
Performance: speed up creation of ASP.NET DataSet objects
During some recent performance tuning work, I took a look at a method that was taking around 450 ms. The primary task of the function was to build a relatively large DataSet object, with around 350 rows and over 110 … Continue reading
Troubleshooting Akamai: How to geolocate an IP Address
Akamai provides enormous value by accelerating content delivery around the world. However, as I described a few months back, Akamai relies on the DNS server that processes the request to determine where to accelerate traffic. Large, global corporations often have complex … Continue reading
Performance: Alter a table’s clustered index in SQL Server while keeping the table online
Back in the old SQL Server 2000 days, creating an index was a major operation that would prevent queries and data modifications until it had completed. Unless the index could be created in a few seconds, any new indexes had … Continue reading
Jeremy Rothman-Shore Blog 