Fluentd Blog

Fluentd v0.12.8 is released

Hi users!

We have released Fluentd version 0.12.8. Here are the changes:

New features / Enhancement

• output: Support millisecond flush span for try_flush_interval and queued_chunk_flush_interval: #568
• filter_record_transformer: Support fields which start with @: #574
• config: Add final attribute to prevent config overwritten by subclass: #583

Bug fixes

• config: Fix embedded code parsing: #564
• out_forward: Resend chunks on dropped connection when wait ACK: #580

Support millisecond flush span for try_flush_interval and queued_chunk_flush_interval

Buffers are now flushed within millisecond unit. In earlier versions, minimum buffer flush span was 1 second.

Default try_flush_interval and queued_chunk_flush_interval are still 1 second, but you can specify millisecond value like 0.1.
For example, DeNA uses try_flush_interval 0.1 and queued_chunk_flush_interval 0.01 parameters.

Note that this is useful for low latency data transfer but there is a trade-off between throughput and latency. Default values are enough on almost cases.

Happy logging!