from Andy Boothe
Based on the results of this JMH benchmark, string operations are faster than regex operations in Java, even if the two operations are logically the same, like String.equals and Pattern.matcher/Matcher.matches.
In some cases, much faster.
Continue reading “In Java, Strings Much Faster than Regexes, Even for Same Operations”This is the first post in a three-post series covering the fundamentals of software optimization. You can find the introduction here. You can find Part II here. You can find the companion GitHub repository here.
The introduction motivated why software optimization is a problem that matters, reflected on the fundamental connection between the scientific method and software performance analysis, and documented the (informal) optimization goal for this series: to optimize the production workflow’s wall clock performance and memory usage performance “a lot.”
This post will cover the theory and practice of designing, building, and running a benchmark to measure program performance using JMH and establishing the benchmark’s baseline performance measurements.
Continue reading “Fundamentals of Software Optimization Part I — Benchmarking”