11 implement buffer manager core functionality #18
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Introduce `IBufferManager` interface and implement an LRU-based buffer manager for page caching. Add `IFileManager` abstraction and a sequential heap file manager for persistent page storage. Define `Page` model and error types for buffer and storage operations. Integrate Serilog for logging and update project dependencies accordingly.
Add comprehensive unit tests for Result<T, E> and LruBufferManager, covering success, error, mapping, binding, and LRU eviction logic. Introduce integration tests for SequentialHeapFileManager, verifying file creation, page allocation, read/write, persistence, and space management. Update solution and project files to include new test project and dependencies.
- Add BufferMetrics struct and BufferMetricsAsync method to IBufferManager for tracking total read and write operations. - Implement metrics tracking in LruBufferManager by incrementing counters on read and write actions. - Update interface and implementation with XML documentation for clarity.
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Pull Request Overview
Implements core buffer management using an LRU strategy, wiring in a file‐manager interface and page model, and adds Serilog logging and test projects.
- Define
IFileManagerinterface andStoreError - Introduce
Pagemodel with metadata - Implement
LruBufferManagerwith initialization, page loading, eviction, and metrics - Update solution and project files to include Serilog, tests, and test project configurations
Reviewed Changes
Copilot reviewed 14 out of 14 changed files in this pull request and generated 5 comments.
Show a summary per file
| File | Description |
|---|---|
| SubMerge/SubMerge.csproj | Added Serilog package reference |
| SubMerge/Storage/IFileManager.cs | Defined storage interface and StoreError struct |
| SubMerge/Models/Page.cs | Introduced Page class with metadata properties |
| SubMerge/Buffer/LRUBufferManager.cs | Implemented LRU buffer manager core functionality |
| SubMerge/Buffer/IBufferManager.cs | Defined buffer manager interface and BufferError |
| SubMerge.sln | Added test project to solution and new build configs |
| SubMerge.Tests/* | Added unit/integration test projects |
Comments suppressed due to low confidence (2)
SubMerge/Buffer/LRUBufferManager.cs:58
- This method returns the least recently used page, not a random one; consider renaming to
GetLruPageAsyncor updating the logic to return a truly random page.
public async Task<Result<Page, BufferError>> GetRandomPageAsync()
SubMerge/Buffer/LRUBufferManager.cs:1
- There are no unit tests covering
LruBufferManagerbehavior (e.g., eviction, hits, misses); consider adding tests to ensure correct LRU semantics and error handling.
using System.Diagnostics;
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🎉 This PR is included in version 1.1.0 🎉 The release is available on GitHub release Your semantic-release bot 📦🚀 |
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