---
title: "Logical Decoding Output Writers"
id: logicaldecoding-writer
pg_version: "20devel"
---

<a id="logicaldecoding-writer"></a>

## 47.8. Logical Decoding Output Writers

It is possible to add more output methods for logical decoding. For details, see `src/backend/replication/logical/logicalfuncs.c`. Essentially, three functions need to be provided: one to read WAL, one to prepare writing output, and one to write the output (see [Section 47.7.5](logicaldecoding-output-plugin-writing.md#logicaldecoding-output-plugin-output)).