Known Java APIs, Unknown Performance impact!
There are certain Java APIs that we use in our everyday programming:
UUID Generation
System.getProperty()
Hashtable.get()
HashMap.get(), HashMap.put()
Collection.clear()
ArrayList.clear()
Threads
& a surprise API
Even though we use them everyday, we may not be aware of their notorious performance side effects. In this video, I have discussed those APIs and their performance impacts on our applications.
If you liked this video, you'll love our Java Performance Masterclass. Learn more:
https://ycrash.io/java-performance-tr...
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Topics covered:
00:41 - UUID Generation
05:58 - System.getProperty()
11:28 - Hashmap
15:30 - Collection.clear()
23:56 - Threads
33:33 - Surprise
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Links shared in the video:
Java UUID generation – Performance impact:
https://blog.fastthread.io/2022/03/09...
Real-world Problem:
https://tinyurl.com/57s55zfz
RHEL:
https://developers.redhat.com/blog/20...
Haveged Library:
http://www.issihosts.com/haveged/
Performance impact of java.lang.System.getProperty():
https://blog.fastthread.io/2021/10/06...
HashMap:
https://blog.ycrash.io/2022/04/15/jav...
yCrash open-source script : 360-degree data:
https://github.com/ycrash/yc-data-script
Real case study: Major bank in Canada
https://tinyurl.com/j5jnmrxr
Which Map to use?
https://blog.ycrash.io/2022/04/15/jav...
Java.util.Collection#clear()
https://blog.ycrash.io/2023/02/18/cle...
Without invoking clear() Report link:
https://tinyurl.com/5x78kvb5
Invoking clear() API Report link:
https://tinyurl.com/3fxcackb
Assigning ‘null’ Report link:
https://tinyurl.com/56emdc7f
Java Virtual Threads – Easy introduction:
https://blog.fastthread.io/2023/02/22...
“I don’t have to worry about Garbage collection” – Is it true?
https://blog.gceasy.io/2021/07/08/i-d...
Automobile company optimizes performance using GCeasy:
https://blog.gceasy.io/2022/08/25/aut...
Uber optimizes Garbage collection performance using GCeasy:
https://blog.gceasy.io/2020/07/14/ube...
How to tune GC Performance?
• GC Tuning & Troubleshooting Crash Course |...
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Read more in this blog:
https://blog.ycrash.io/2023/02/23/kno...
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Our Tools:
yCrash: https://ycrash.io/
GCeasy: https://gceasy.io/
HeapHero: https://heaphero.io/
fastThread Tool: https://fastthread.io/
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SRE Community:
Need help in troubleshooting your performance problems?
Post here: https://answers.ycrash.io/
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Follow us on:
LinkedIn: / ycrash
Instagram: / ycrash_rca
Facebook: / tier1app
Twitter: / tier1app
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Related videos:
Java UUID generation – Performance impact:
• Java UUID generation – Performance impact
Java Hashtable, HashMap, ConcurrentHashMap – Performance impact:
• Java Hashtable, HashMap, ConcurrentHashMap...
Java Virtual Threads – Easy introduction:
• Java Virtual Threads: The ONLY Introductio...
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