A couple of years ago, Reactive Programming was all the rage, but it had one big issue: reactive stopped as soon as you access a SQL database. You had a nice reactive chain up to the database, defeating the whole purpose. Given the prevalence of SQL databases in existing and new apps, one couldn’t enjoy the full benefits of Reactive Programming but still pay the full price of complexity.

Since then, the landscape has changed tremendously. Most importantly, it offers many reactive drivers over popular databases: PostgreSQL, MariaDB and MySQL, Microsoft SQL Server, Oracle, you name it! Even better, some frameworks provide a reactive API over them.

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