Database indexes are complex as there are no good explanations. I've written an entire graphical-enhanced book about the topic.
Most developers only know the basics of databases. Therefore, I frequently share lesser-known tips and knowledge for them.
The MySQL EXPLAIN output is too cryptic for anyone. This service transforms the data to be easier to understand.
You can run many databases and versions at the same time on a development machine isolated from each other.
My yearly Laravel survey reveals the numerous technologies and development practices being used in the community and how trends change.
I am working on some interesting open-source libraries within the Laravel ecosystem to work better with databases.