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When a company switches the relational database it uses, you wouldn’t expect the news of the switch to go viral. Most engineers are not interested in the subtle differences between MySQL and Postgres, right?
Uber recently switched from having Postgres as its main relational database to using MySQL. Evan Klitzke wrote a detailed blog post about the migration, and post got very popular for at least three reasons:
If you are even slightly interested in distributed systems or databases, I recommend reading Evan’s blog post in detail.