Fluentd and Fluent Bit

Data collection matters and nowadays the scenarios from where the information can come from are very variable. For hence to be more flexible on certain markets needs, we may need different options. On this page we will describe the relationship between the Fluentd and Fluent Bit open source projects.

Fluentd and Fluent Bit projects are both created and sponsored by Treasure Data and they aim to solve the Data Collection and Data Forwarding needs as a whole.

From an architecture usability perspective:

  • Fluentd is an Aggregator.
  • Fluent Bit is a Data Forwarder.

The following table describe a comparisson on different areas of the projects:

Fluentd Fluent Bit
Scope Containers / Servers Containers / Servers
Language C & Ruby C
Memory ~40MB ~250KB
Performance High Performance High Performance
Dependencies Built as a Ruby Gem, it requires a certain number of gems. Zero dependencies, unless some special plugin requires them.
Plugins More than 650 plugins available Around 20 plugins available
License Apache License v2.0 Apache License v2.0

Considering Fluentd as a main Aggregator and Fluent Bit as a Data Forwarder, we can see both projects complement each other providing a full reliable solution.

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