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Log everything in JSON

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"Fluentd" is fully free and fully open-source log collector. Fluentd receives logs as JSON streams, buffers and sends them to 125+ other systems like S3, MongoDB, Hadoop, or other Fluentds.

Fluentd in the Industry

"Slideshare uses Fluentd to stream logs and events in the cloud. We were looking for a versatile yet lightweight logger in Ruby, and Fluentd fit the bill perfectly."

Sylvain Kalache

Operations Engineer

"Data Science is at the core of GREE’s business, and it started from logging user events and advertisement related data. We currently deploy Fluentd for a number of our games and ad services to federate user event data, and use that data for product decisions."

Masaki Fujimoto

Chief Technology Officer

"Treasure Data provides full-stack data pipeline from data collection, storage, processing, and BI connectivity on the cloud. Fluentd originally developed as one of our component, and got a lot of traction from various industries after open-sourcing it."

Kazuki Ohta

Chief Technology Officer

>> words from more users.