---
title: "Replication Slot — Database Glossary | Xata"
description: "A server-side object tracking a consumer's position in the WAL stream. Prevents the server from discarding WAL segments that haven't been consumed. Phys..."
source: "https://xata.io/glossary/replication-slot"
---

# Replication Slot

Replication & HA

A server-side object tracking a consumer's position in the WAL stream. Prevents the server from discarding WAL segments that haven't been consumed. Physical slots track LSN; logical slots also track decoding state.

Related terms

LSNWAL

[← Back to glossary](/glossary)