# Zero-Downtime Patching Part 1: Prewarming

DevFeed: [Zero-Downtime Patching Part 1: Prewarming](<https://devfeed.tech/articles/zero-downtime-patching-part-1-prewarming-5746.md>)

Original publisher: [Read original article](<https://neon.com/blog/prewarming>)

Author: Hans Norheim

Published: 2026-03-27T14:04:17Z

Content type: article

Language: en

Sources: [Blog -- Neon Docs](<https://devfeed.tech/sources/blog-neon-docs.md>)

Topics: [Database](<https://devfeed.tech/topics/database.md>)

Tags: [availability](<https://devfeed.tech/tags/availability.md>), [cache](<https://devfeed.tech/tags/cache.md>), [database](<https://devfeed.tech/tags/database.md>), [engineering](<https://devfeed.tech/tags/engineering.md>), [optimization](<https://devfeed.tech/tags/optimization.md>), [performance](<https://devfeed.tech/tags/performance.md>), [postgres](<https://devfeed.tech/tags/postgres.md>), [updates](<https://devfeed.tech/tags/updates.md>)

## AI overview

This article introduces prewarming as a way to avoid the performance slowdown that can follow a PostgreSQL restart during planned maintenance. It describes warming lost caches so updates and patches can move toward zero downtime.

## Source excerpt

Ensuring customer databases are always available is one of the most important things we do in Neon and Lakebase. We've designed the system with redundancy at every level, automatically failing over and recovering your database in the event of hardware or software failures. In a l...