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By default MongoDB tries to memory map as much as possible of the database file. Given a fairly big database, this will consume all your memory. If MongoDB is running on a dedicated server this is totally fine, but when running on a shared server this will cause unnecessary swapping for your other applications. At [...]

First we need to install the htpasswd application, it is located in the apache2-utils package. This package has no dependencies on apache, so it is safe to install it – it will not download the full apache for you To install it on ubuntu type: sudo apt-get install apache2-utils Once installed we can use it [...]

Really impressive to see that it actually is possible to upgrade all the way from Windows 1.0 (DOS 5.0) to Windows 7 and keep some of the applications and user settings. The only OS I missed was Windows ME (not that any sane person used that OS but anyway), Andy explains that Windows ME did [...]

Recently I decided to switch hosting provider from a shared server to a VPS. My choice of linux is Ubuntu so i installed the latest version, Ubuntu 10.10 server. Instead of using Apache as webserver, which has been my choice of webserver for years, I decided to go for Nginx. Nginx is known for its [...]

Lately I have been playing around with WSGI in Python. WSGI is an interface between the web server and the web application, it is meant to simplify writing your own web framework in Python. My intention is not to write an fully fledged web framework, but rather just play around with some ideas I have [...]

The workaround I tested a few weeks ago did not really solve my problem – actually it made it worse. The autorestart caused mono to hang and not restart at all, so my site stopped responding every 6th hour. I quickly had to disable this. Still I had the memory consumption problems. From various sources [...]

Lately I have been experiencing that the mod-mono-server2 process running on the server hosting the video upload web-service (I blogged about this in my last post) has been consuming a lot of memory. Once, it even reached the point where all memory (1.5GB) of the server was consumed and the Linux OOM-killer killed the mod-mono-server2 [...]

A few months ago my employer asked me if it would be possible to create a web service for encoding videos. I had been playing around with Amazon’s web services for a while, and it seemed like the perfect foundation for building this. I decided to build the backend in Python and use ffmpeg for [...]

I needed to parse data from a series of web pages, usually i would have used CURL to download the page and then used regular expressions to extract the data i was interested in. But the page i was going to parse was using AJAX to reload part of the page (when you clicked the [...]