Jmh · DevPro Portal

Mastering Java Performance in 2025: JVM Tuning, GC Analysis, and Memory Management

17 November 2025·2079 words·10 mins

Performance Tuning Java Core DevOps Java-21 Jvm-Tuning Garbage-Collection Memory-Management Profiling Zgc Jmh

In the cloud-native era of 2025, performance is no longer just about bragging rights—it is directly correlated to infrastructure costs and user retention. With the widespread adoption of Java 21 (LTS) and the emerging features of Java 25, the landscape of the Java Virtual Machine (JVM) has evolved significantly.

Java List Performance: ArrayList vs. LinkedList vs. Vector Benchmarked (2025)

15 September 2025·1458 words·7 mins

Performance Tuning Java-21 Performance Collections-Framework Benchmarking Jmh Best Practices

The question of “ArrayList vs. LinkedList” is a rite of passage for every Java developer. We learned the Big O notation in university: LinkedList is $O(1)$ for insertions, while ArrayList is $O(n)$ if resizing occurs.

Java String Performance in 2025: StringBuilder vs. StringBuffer vs. Concatenation

8 September 2025·1483 words·7 mins

Performance Tuning Java-Performance Best Practices String-Manipulation Jmh Java-21

In the landscape of Java development, few topics are as frequently discussed—and yet often misunderstood—as String manipulation. As we approach late 2025, with Java 21 LTS firmly established and newer versions rolling out, the “String Concatenation vs. StringBuilder” debate remains relevant, though the underlying mechanics have evolved significantly.

Java Primitives vs. Objects: A Performance Deep Dive (2025)

4 September 2025·1624 words·8 mins

Performance Tuning Java-Performance Jmh Memory-Management Best Practices Java-21 Garbage-Collection

In the ecosystem of Java development, few discussions are as fundamental yet frequently misunderstood as the dichotomy between primitive types and wrapper objects.