---
title: "Upgrade strategies for Amazon RDS for MySQL 8.0 to 8.4"
url: https://daily.dev/posts/upgrade-strategies-for-amazon-rds-for-mysql-8-0-to-8-4-kxnxclhav
source_url: https://aws.amazon.com/blogs/database/upgrade-strategies-for-amazon-rds-for-mysql-8-0-to-8-4
type: article
source: "AWS Database Blog"
published: 2026-05-31T07:45:07.569Z
updated: 2026-05-31T09:25:57.316Z
tags: ["aws", "database", "mysql"]
reading_time: 16
upvotes: 0
comments: 0
language: en
---

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# Upgrade strategies for Amazon RDS for MySQL 8.0 to 8.4

**[AWS Database Blog](https://daily.dev/sources/aws-database-blog)** · 16 min read · 0 upvotes · 0 comments

## Summary

Amazon RDS for MySQL 8.0 reaches end of standard support on July 31, 2026. This guide covers three upgrade paths to MySQL 8.4: in-place upgrade (simplest, minutes-to-hours downtime), Blue/Green Deployment (under 5 seconds switchover, best for production), and snapshot restore (best for dev/test). Key breaking changes in 8.4 include mysql_native_password being disabled by default in favor of caching_sha2_password, removal of MASTER/SLAVE terminology, and InnoDB variable default changes. RDS runs mandatory prechecks automatically before upgrading, generating a PrePatchCompatibility.log if incompatibilities are found. Extended Support is available post-deadline at per-vCPU hourly rates, doubling for Multi-AZ deployments. Best practices include testing on non-production first, creating a mysql8.4 parameter group, upgrading read replicas before the primary, taking manual snapshots, and warming the buffer pool after upgrade.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://aws.amazon.com/blogs/database/upgrade-strategies-for-amazon-rds-for-mysql-8-0-to-8-4>

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Tags: [#aws](https://daily.dev/tags/aws), [#database](https://daily.dev/tags/database), [#mysql](https://daily.dev/tags/mysql)

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