druid/docs/content/design/plumber.md

---
layout: doc_page
title: "Apache Druid (incubating) Plumbers"
---

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# Apache Druid (incubating) 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.