Author Archives: Clay Lenhart
It looks like my site has been hacked. I’ve reinstalled the blog from scratch to remove it. I appologize for any problems caused to anyone.
Bugfix 1.2-20110729 increases a timeout when estimating the size of a differential backup. Previous releases could fail with a timeout error if the database was large.
WebSockets is a new feature that appears to be a great way to send messages from the server to the browser, however today there isn’t much support, both in browsers and on the server in IIS and ASP.Net.
Today you can use a Comet technique (in particular, Ajax with long polling) which is available in all browsers. Using this concept, the browser makes a standard AJAX call to the server that waits until it receives a message. Asynchronous Pages and Asynchronous Controller allow you to have long running HTTP requests without using precious ASP.Net threads. Continue reading
I’ve just released version 1.2-20091123 of SQL Server Compressed Backup. SQL Server Compressed Backup will back up a SQL Server database to a compressed file, using either gzip, zip and bzip2. The new features are: Continue reading
SSAS cube processing can kill running queries. That’s right, it may kill queries in order to commit changes to the cube.
Here is what happens during SSAS cube processing. Continue reading
Bill Galashan, DBA of bet365 sent over the following query that lists the execution plan of the 10 most frequently executed queries. Continue reading
It’s so easy to set up, I can’t believe I haven’t done it before.
We, as developers, have a problem. CPUs will continue to have more cores, and each core is not going to be any faster. The only way to write faster applications is to write multithreaded code, which has two challenges: 1) Multithreaded code is complex to write and think about. 2)Multithreaded code is difficult to test. From what I’ve seen, people are pursuing 4 approaches.
There is suddenly a lot of interest in functional languages recently. The two advantages are writing a DSL (Domain Specific Language) and writing concurrent code. The languages that seem to come up are Clojure (JVM), F# (based on OCaml, Haskell, and ML) (.Net CLR), and Erlang (JVM).