druid/docs/content/design/plumber.md

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---
layout: doc_page
title: "Druid Plumbers"
---
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# Druid Plumbers
The plumber handles generated segments both while they are being generated and when they are "done". This is also technically a pluggable interface and there are multiple implementations. However, plumbers handle numerous complex details, and therefore an advanced understanding of Druid is recommended before implementing your own.
Available Plumbers
------------------
#### YeOldePlumber
This plumber creates single historical segments.
#### RealtimePlumber
This plumber creates real-time/mutable segments.