The question
I have never done deep performance tuning, but I have an interview for a role that lists it as a requirement. What are the low-hanging fruits I can look for? I want to be able to talk about profiling tools like VisualVM or JProfiler, and how to look for bottlenecks in the code. Any starting point for this study?
Verified summary
Effective performance tuning requires a systematic approach focusing on identifying I/O bottlenecks, optimizing algorithmic complexity, and analyzing memory usage through profiling tools.
1 answer
Focus your performance tuning strategy on three primary areas: input/output latency, algorithmic complexity, and memory management. You should emphasize identifying blocking calls, inefficient iteration patterns, and garbage collection overhead.
