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In project development, if the amount of data is relatively large, such as log records, we often adopt the scheme of sub-table and sub-database; in order to improve performance, the database query and update operations are separated, and the read-write separation scheme is adopted at this time.
Table sub-database usually includes vertical sub-database, vertical table sub-database, horizontal sub-database and horizontal table sub-database scheme, including sub-table sub-database scheme. It takes a certain amount of time to implement each scheme; therefore, today I recommend an EF- based Code realizes sub-table and sub-library, and read-write separation open source library, which allows us to access at zero cost.
Project Description
This is an open source project aimed at EF Code's high performance, lightweight sub-table and sub-library, and read-write separation. It allows us to access quickly and easily, or transform the original project, and access it at almost zero cost.
project characteristics
1. Sub-table: time sub-table, custom sub-table, multi-table query update and delete.
2. Sub-database: support custom sub-database, sub-database query, update and delete.
3. Sub-table and sub-database: support partial table sub-table and partial table sub-database.
4. Separation of reading and writing: supports the scheme of separating reading and writing from one master to multiple slaves.
5. Others: Support dynamic table and database subdivision, support high-performance query, support transactions, etc.
Technology Architecture
1. Cross-platform: Based on .NetCore development, it supports Windows, Mono, Liunx, and Windows Azure.
2. Support Standard 2.0, .NetCore 2.0+.
3. Database: Support MySql, Oracle, SqlServer.
project structure
The project contains examples of different databases, and src is the source code of different versions.
Get started quickly
**1. Table definition
**
public class SysUserMod:IAge
{
/// <summary>
/// 用户Id用于分表
/// </summary>
public string Id { get; set; }
/// <summary>
/// 用户名称
/// </summary>
public string Name { get; set; }
/// <summary>
/// 用户姓名
/// </summary>
public int Age { get; set; }
}
2. Sub-table rules
public class SysUserModVirtualTableRoute : AbstractSimpleShardingModKeyStringVirtualTableRoute<SysUserMod>
{
//根据ID取模3，分为2张表
public SysUserModVirtualTableRoute() : base(2,3)
{
}
public override void Configure(EntityMetadataTableBuilder<SysUserMod> builder)
{
builder.ShardingProperty(o => o.Id);
}
}
3. Startup configuration
public void ConfigureServices(IServiceCollection services)
{
......
services.AddShardingDbContext<DefaultShardingDbContext>()
.UseRouteConfig(o =>
{
//定义分表路由
o.AddShardingDataSourceRoute<SysUserModVirtualDataSourceRoute>();
}).UseConfig((sp,o) =>
{
......
//指定主从数据库
o.AddDefaultDataSource("ds0",
"server=127.0.0.1;port=3306;database=db1;userid=root;password=root;");
o.AddExtraDataSource(sp => new Dictionary<string, string>()
{
{ "ds1", "server=127.0.0.1;port=3306;database=db2;userid=root;password=root;" },
{ "ds2", "server=127.0.0.1;port=3306;database=db3;userid=root;password=root;" }
});
o.UseShardingMigrationConfigure(b =>
{
b.ReplaceService<IMigrationsSqlGenerator, ShardingMySqlMigrationsSqlGenerator>();
});
}).ReplaceService<IModelCacheLockerProvider,DicModelCacheLockerProvider>()
.AddShardingCore();
}
project address
Github：
https://github.com/dotnetcore/sharding-core
Gitee：
https://gitee.com/xuejm/sharding-core
- End -
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