Galosys.Foundation.Data 26.5.15.1

.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher.
There is a newer version of this package available.
See the version list below for details. 
dotnet add package Galosys.Foundation.Data --version 26.5.15.1
                    


                    

                
NuGet\Install-Package Galosys.Foundation.Data -Version 26.5.15.1
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Galosys.Foundation.Data" Version="26.5.15.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Galosys.Foundation.Data" Version="26.5.15.1" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Galosys.Foundation.Data" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Galosys.Foundation.Data --version 26.5.15.1
                    


                    

                
#r "nuget: Galosys.Foundation.Data, 26.5.15.1"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package Galosys.Foundation.Data@26.5.15.1
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Galosys.Foundation.Data&version=26.5.15.1
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Galosys.Foundation.Data&version=26.5.15.1
                    


                            Install as a Cake Tool

Galosys.Foundation.Data

成熟度: 🟢 稳定 — 生产可用，测试充分，活跃维护

简介

Galosys.Foundation.Data 提供 ADO.NET 多数据源支持，包含连接池管理、主从读写分离、健康检查等企业级特性。

特性

  • 多数据源管理 - 基于 IDataSource 接口的统一数据源抽象
  • 连接池 - DruidDataSource 内置连接池，支持泄漏检测
  • 主从读写分离 - DataSourceContext 基于 AsyncLocal 的线程安全上下文切换
  • 健康检查池 - HealthCheckedDataSourcePool Round-robin 轮询 + 健康探测 + 全挂降级主库
  • 自动 DI 注册 - 通过配置自动注册数据源

安装

<PackageReference Include="Galosys.Foundation.Data" Version="x.x.x" />

配置

1. 连接字符串配置

在 appsettings.json 中配置主库和副本连接字符串：

{
  "ConnectionStrings": {
    "Default": "Server=master-host;Database=MyDb;User Id=sa;Password=xxx;Provider=Microsoft.Data.SqlClient",
    "Default.Replica1": "Server=replica1-host;Database=MyDb;User Id=sa;Password=xxx;Provider=Microsoft.Data.SqlClient",
    "Default.Replica2": "Server=replica2-host;Database=MyDb;User Id=sa;Password=xxx;Provider=Microsoft.Data.SqlClient"
  }
}

最小化配置仅需主库连接字符串（无 Replica 后缀），模块会自动识别副本。

2. 注册数据源

// 在 Program.cs 或 Startup.cs 中
services.AddDataSources(configuration);

有副本时自动创建 HealthCheckedDataSourcePool（Round-robin + 健康探测），无副本时直接使用主库 PooledDataSource。

使用示例

基本查询

public class QueryService
{
    private readonly IDataSource _dataSource;

    public QueryService([FromKeyedServices("Default")] IDataSource dataSource)
    {
        _dataSource = dataSource;
    }

    public async Task<List<User>> GetUsersAsync()
    {
        using var conn = _dataSource.GetConnection();
        // 执行查询...
    }
}

读写分离

通过 DataSourceContext.SwitchTo 切换到副本上下文：

using (DataSourceContext.SwitchTo(DataSourceType.Replica))
{
    // 此范围内的查询走副本
    var users = await GetUsersAsync();
}
// 离开 using 后自动恢复之前的上下文

嵌套切换

using (DataSourceContext.SwitchTo(DataSourceType.Master))
{
    // 写操作走主库
    await SaveOrderAsync(order);

    using (DataSourceContext.SwitchTo(DataSourceType.Replica))
    {
        // 读操作走副本
        var stats = await GetStatsAsync();
    }

    // 自动恢复为 Master
}

DataSourceType 枚举

值 说明
Master 主库，默认值
Replica 副本，用于读操作

核心类

类/接口 说明
IDataSource 数据源接口，提供 GetConnection()
PooledDataSource 简单数据源，每次创建新连接
DruidDataSource 连接池数据源，支持泄漏检测
HealthCheckedDataSourcePool 健康检查池，Round-robin 轮询副本
DataSourceContext AsyncLocal 上下文，管理读写分离
DataSourceType 数据源类型枚举（Master / Replica）

HealthCheckedDataSourcePool

参数 默认值 说明
master 必填 主库数据源，全挂降级使用
replicas 必填（至少 1 个） 副本数据源集合
healthCheckInterval 30 秒 健康探测间隔

行为：

  • 轮询选择: Round-robin 依次选择健康副本
  • 跳过不健康副本: 健康检查失败自动跳过
  • 全挂降级主库: 所有副本不健康时自动回退主库
  • 自动恢复: 副本恢复健康后自动重新纳入轮询

DruidDataSource 连接池修复

修复了 GetConnection 中 lock + semaphore 嵌套导致的死锁问题：信号量等待移到 lock 外部，确保等待线程不阻塞连接归还。

配置项（通过 ConnectionStrings 节点下的子键指定）：

配置项 默认值 说明
ConnectionString 必填 数据库连接字符串
Provider Microsoft.Data.SqlClient 数据库提供程序
MaxPoolSize 20 最大连接数
MinPoolSize 5 最小连接数
ConnectionTimeout 00:00:30 获取连接超时
LeakDetectionThreshold 00:30:00 连接泄漏检测阈值

依赖

  • Galosys.Foundation.Core
Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

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GitHub repositories

This package is not used by any popular GitHub repositories.

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