bptree - B+Tree implementation - IdSet

[namse]

Overview

This pull request introduces the initial implementation of a B+ Tree in Rust, named IdSet. The IdSet is a B+ Tree designed to store 128-bit unique IDs with the following features:

• File system-based storage.
• Strong consistency guarantees using a Write-Ahead Log (WAL).
• Memory cache for fast reads.

Files to Review

1. lib.rs

   • Entry point for the B+ Tree library.
   • Includes module declarations and imports.

2. wal.rs

   • Implementation of the Write-Ahead Log (WAL) for the B+ Tree.
   • Handles logging and recovery mechanisms.

3. pages.rs

   • Defines the structure and operations for pages in the B+ Tree.
   • Includes Page, PageOffset, Header, LeafNode, and InternalNode structures.

4. operator.rs

   • Defines the operations for manipulating the B+ Tree.
   • Includes methods for inserting, deleting, and searching for IDs.

5. mod.rs

   • Module definition for the B+ Tree implementation.
   • Includes sub-modules and type definitions.

6. frontend.rs

   • Frontend for the IdSet data structure.
   • Provides an API for interacting with the B+ Tree.

7. fd.rs

   • Custom file descriptor management for read/write operations.
   • Includes ReadFd and WriteFd structures.

8. cache.rs

   • Cache management for the B+ Tree pages.
   • Implements a caching mechanism to improve read performance.

9. backend.rs

   • Backend operations for the B+ Tree.
   • Manages the interaction between the frontend and the storage.

10. checksum.rs

    • Checksum calculation for data integrity.
    • Uses CRC-64 for checksum computation.

Review Focus

• Correctness: Ensure that the B+ Tree operations (insert, delete, search) are implemented correctly.
• Concurrency: Verify that the asynchronous operations and concurrency mechanisms are correctly handled.
• Performance: Evaluate the efficiency of the caching mechanism and WAL implementation.
• Code Quality: Check for code readability, proper documentation, and adherence to Rust best practices.
• Error Handling: Ensure that error handling is robust and covers all edge cases.

--- Copilot generated.

[namse]

I will open with map version later.