Kotlin
- The beauty of Kotlin type system – kt.academy
Good explanation of the type system
Java
- Java: Self-Referential Generics, Part 2 – Aleksei Novikov
Interessting use of Generics - Mastering Efficient JSON Processing in Java with MapStruct: Best Practices and Techniques – Tech Is Beautiful
It’s not that much about JSON but a good article about MapStruct
Python
- Why You Should Stop Using List Comprehensions in Python – Byron Dolon
Instead, use generator expressions.
Spring Boot
- Boost Your Application’s Performance with Virtual Threads in Java and Spring: Exploring Project Loom – Amit Himani
Shows how the Tomcat in Spring can be adopted to Loom - Effective Exception Handling – Bubu Tripathy
Starts slowly but then there are some good advices - Speed up Spring Boot Startup Time – baeldung
Neat tricks to improve startup time - Optimize Spring Boot: Tips and Tools – O.Craay
Some other good tricks to improve startup time