a tumblelog is fine too

Amazon Elastic MapReduce is a web service that enables businesses, researchers, data analysts, and developers to easily and cost-effectively process vast amounts of data. It utilizes a hosted Hadoop framework running on the web-scale infrastructure of Amazon Elastic Compute Cloud (Amazon EC2) and Amazon Simple Storage Service (Amazon S3). […]

The Facebook web tier serves billions of PHP requests every day across thousands of servers. Since new code or other changes to the site get pushed out frequently, it is critical to have near real-time performance data that is both representative of production traffic and rich in its ability to help pinpoint regressions down to specific functional areas.

This blog post talks about our solution to this problem - a lightweight but powerful tool called XHProfLive. Profiling is a serious issue faced by millions of real-time services both large and small. So Facebook is happy to announce that XHProf, the light-weight and feature rich profiler that powers XHProfLive, is now made available as open source. I’d like to go through how we got to this point, starting from the problem of profiling billions of web requests intelligently. […]

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tinyrb is the smallest Ruby VM to date. It won’t run all your Ruby code, but it’s fast and fun to play with.