More info. Menu Close. Net Admin How to improve the performance of Java applications in 10 steps. We are reader supported and may receive a commission when you make purchases using the links on our site. If a slow, crawling Java application is making your blood boil, take a deep breath and remember to not bang your fists on your keyboard — it will only make things worse. Instead, take a deep breath and use one of these methods of speeding up Java application performance. Ben Schultz Former systems administrator.
Is Java the same as JavaScript? Causes of poor application performance The causes of an underperforming application are vast, though the main causes are a small handful of problems.
Clean up code and revise algorithms — clean code is easier to maintain, edit, read, and refine; adjusting your algorithms reduces tautological function calls. Avoid recursion when possible — recursion is a necessary evil in some cases, though it should be used sparingly.
Upgrade system hardware — poor application performance may not be rooted in poor code and algorithms; instead, the underlying cause may be related to the system running the application. Increase LAN and WAN bandwidth — not all functions interact with local hardware; if your application talks with remote systems, your network infrastructure may be to blame. Tidy up your operating system — messy operating systems need maintenance to run applications to the best of their ability.
Exploit caching for improved performance — caching is one of the best ways to reduce redundant object instantiation and function calls. Favor the stack over the heap — the stack is more efficient with regards to system resources because it maintains itself and frees up the memory which defunct objects occupy. Influence memory management — as a final resort, accessing heap memory is sometimes necessary. It will require you to choose the right garbage collection method.
Related post: Apache Tomcat Monitoring 1. Perform profiling and load testing The first step to improving the performance of Java applications is to identify areas for improvement.
Avoid recursion when possible Recursion is a basic programming strategy in which a function calls itself to solve a problem. Upgrade system hardware On the surface, it may seem that an underperforming Java application must be caused by a software issue. Tidy up your operating system Operating systems require housekeeping and maintenance to run at peak performance and to efficiently use system resources.
Exploit caching for improved performance Caching is one of the most effective ways to increase the efficiency of Java applications.
Favor the stack over the heap For improved Java application performance, store your data on the stack instead of the heap. Influence memory management Although using the stack is better than accessing heap memory, sometimes it is unavoidable. The four options are: Serial Garbage Collector — For a single-threaded environment. Good for CPU optimization but not good for scalability. Parallel Garbage Collector — This is the default and it is designed for multi-thread systems.
Like Serial GC, it freezes all application threads while collecting. Uses a lot of CPU. Concurrent Mark Sweep — Selectively removes memory handlers, freeing up patches of space. Will freeze only processes that are accessing the same memory area that is being adjusted. Very CPU intensive but great for scalability. No Tags: spring-boot , spring-file-download , spring-file-streaming-download.
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