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Show HN: ChaosTree – A zero-dependency Java tree library (AVL,RBT,B-Tree,B+Tree)
chaos_vy Hacker News
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What is ChaosTree?ChaosTree is a zero-dependency Java Sorted Set/Map library built around multiple tree implementations.It provides implementations of:
- AVL Tree
- Red-Black Tree
- B-Tree
- B+TreeI have not made my custom API as it implements NavigableSet, NavigableMap, SequencedSet and SequencedMap. My Custome API are:
- buildFromSorted(Iterator> it, float factor)
- importFlatMatrix(Object[][] blast, float factor)
- Object[][] exportFlatMatrix()I started ChaosTree because I wanted to explore how far I could learn DS structure, It started as frst release of 7 tree of Set type with Custome API, As i got engrossed into it I moved to Map, During phase of switching from Set to Map there was drastic change and knowledge upgrade where I pushed my Tree limit from jdk11+ support to jdk21+ where paid close attention to dependency-free and memory layout, allocation,JVM behavior, and real-world performance.Some of the things I experimented with:
- Different node layouts and metadata footprints
- CRTP/F-bounded polymorphism for tree implementations
- Parent-pointer vs parentless nodes
- Array-based N-ary tree nodes
- B-Tree/B+Tree degree selection
- JMH benchmarking and JFR profiling
- Differential/randomized testing against java.util.TreeMap/TreeSetAfter this rough and tough It also passes these test:-Guava Testlib compatibility testing
-jqwik property-based testing
-Randomized differential testing against reference collections
-White-box structural validation of tree nodes
-Direct validation of B-Tree/B+Tree structural invariants
-Exception and iterator-contract testing
-Serialization and cloning tests
-Nary Tree uses custom jqwick test of API validation as well.Tail latency behavior is not shown here because it get's truncated into a simple text which made the dat read wrong:https://chaos-vy.github.io/ChaosTree/utils/JMH-Report.html
I have also ran benchmark with official JDK TreeMapUpdate to my N-ary tree.GitHub:
https://github.com/Chaos-vy/ChaosTree
https://chaos-vy.github.io/ChaosTree/I'd especially like feedback on the API design, implementation choices, benchmark methodology. I am currently trying to truncate useless and complex branches for performnace tuning.
Comments URL: https://news.ycombinator.com/item?id=49694404
Points: 7
# Comments: 9
Read original: https://github.com/Chaos-vy/ChaosTree
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