将Uber的MySQL车队升级到8.0版本
At Uber, our MySQL fleet is the backbone of our data infrastructure, supporting a vast array of operations critical to our platform. Starting 2023, we embarked on a significant journey to upgrade our MySQL fleet to the latest version (i.e., MySQL v8.0).
在Uber，我们的MySQL集群是我们数据基础设施的支柱，支持着我们平台上的各种关键操作。从2023年开始，我们着手对我们的MySQL集群进行重大升级，升级到最新版本（即MySQL v8.0）。
In this blog post, we delve into the motivations, challenges, and solutions involved in this monumental upgrade process and how we completed this upgrade without impacting our Service Level Objectives (SLO).
在本博客文章中，我们深入探讨了这个重大升级过程中涉及的动机、挑战和解决方案，以及我们如何在不影响服务级别目标（SLO）的情况下完成了这次升级。
Several compelling factors drove our decision to transition from MySQL v5.7 to v8.0:
我们决定从MySQL v5.7过渡到v8.0的几个引人注目的因素：
Addressing End-of-Life Concerns: As MySQL v5.7 reached its extended support end date, continuing to use it exposed us to potential security vulnerabilities and a lack of ongoing bug fixes. This posed a significant risk to the stability and integrity of our data.
解决生命周期终止的问题：由于MySQL v5.7达到了其扩展支持结束日期，继续使用它会使我们面临潜在的安全漏洞和缺乏持续的错误修复。这对我们数据的稳定性和完整性构成了重大风险。
Boosting Performance and Concurrency: MySQL v8.0 offered a compelling proposition with its promise of substantial performance enhancements. Optimizations in indexing and resource utilization translated to faster query execution speeds and improved concurrency handling. This directly translates to a smoother user experience for our customers.
提升性能和并发性：MySQL v8.0以其承诺的显著性能提升提供了一个引人注目的方案。索引和资源利用方面的优化转化为更快的查询执行速度和改进的并发处理能力。这直接为我们的客户提供了更流畅的用户体验。
Unlocking New Functionality: Beyond performance improvements, v8.0 introduced valuable features like support for window functions, enhanced JSON handling, and better spatial data capabilities. These features opened new avenues for data manipulation and analysis, empowering us to unlock new functionalities within our platform.
解锁新功能：除了性能改进外，v8.0还引入了有价值的功能，如对窗口函数的支持、增强的JSON处理能力和更好的空间数据功能。这些功能为数据操作和分析开辟了新的途径，使我们能够在平台内解锁新的功能。
Password Rotation: The introduction of “Dual passwords” in v8.0 allows for sm...