Abstract Algorithms

Category

java 21

2 articles across 2 sub-topics

Adapting to Virtual Threads for Spring Developers

Adapting to Virtual Threads for Spring Developers

TLDR: Platform threads (one OS thread per request) max out at a few hundred concurrent I/O-bound requests. Virtual threads (JDK 21+) allow millions — with zero I/O-blocking cost. Spring Boot 3.2 enables them with a single property. Avoid synchronized...

Apr 5, 2026•18 min read

Java 8 to Java 25: How Java Evolved from Boilerplate to a Modern Language

Java 8 to Java 25: How Java Evolved from Boilerplate to a Modern Language

TLDR: Java went from the most verbose mainstream language to one of the most expressive. Lambdas killed anonymous inner classes. Records killed POJOs. Virtual threads killed thread pools for I/O work.

Apr 5, 2026•44 min read