Fluentd is an advanced open-source log collector developed at Treasure Data, Inc (see previous post). Because Fluentd handles logs as semi-structured data streams, the ideal database should have strong support for semi-structured data. There are several databases that meet this criterion, but we believe MongoDB is the market leader.
A bit like Scribe or Flume, but in Ruby and using MongoDB as a storage.
Original title and link: Real-Time Log Collection With Fluentd and MongoDB ( ©myNoSQL)