https://github.com/skyzh/BPlusTree

🌲 Fully unit-tested B+ tree with basic paging implemented in C++
https://github.com/skyzh/BPlusTree

bplus-tree bplustree clion cmake cpp

Last synced: about 1 month ago
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🌲 Fully unit-tested B+ tree with basic paging implemented in C++

• Host: GitHub
• URL: https://github.com/skyzh/BPlusTree
• Owner: skyzh
• License: mit
• Created: 2019-05-24T05:40:25.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2019-07-08T14:54:11.000Z (over 5 years ago)
• Last Synced: 2024-10-30T06:57:07.921Z (about 1 month ago)
• Topics: bplus-tree, bplustree, clion, cmake, cpp
• Language: C++
• Homepage:
• Size: 346 KB
• Stars: 12
• Watchers: 2
• Forks: 3
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-cs - @skyzh, 2019 Spring

README

        
# BPlusTree

[![Build Status](https://travis-ci.com/SkyZH/bplustree.svg?token=szB6fz2m5vb2KyfAiZ3B&branch=master)](https://travis-ci.com/SkyZH/bplustree)

A simple B+ tree implemented in cpp. Fully unit-tested.

## Implementations

`BTree.cpp` is automatically generated with source file from `src/` folder.

For original implementation, you should refer to `src/`.

Container: some basic containers implementation including `Vector` and `Set`.

LRU: least recently used cache, eliminating memory usage when processing huge chunks.

Persistence: manage so-called 'pages', which store BTree data.

Iterator: B+Tree iterators

Partially ported to upstream https://github.com/peterzheng98/CS158-DS_Project

## Limitations

Number of pages in memory must be larger than those required for a single search, because page swapping is done after one operation.

## Todo

- [x] Reduce overhead in serialize and deserialize by passing istream as argument

- [x] 4k align

- [x] Reduce page offload overhead by introducing read-only page request

- [ ] Use HashMap to store pages in memory to store larger dataset.

- [ ] Implement copy constructor and assign

- [x] Implement iterator and const iterator

- [x] Reuse deleted pages

- [ ] Port to upstream: size, empty, iterator, return value of query and insert.