优化模型处理默认的list改成array

samples/Sample.MySql/DicModelCacheLockerProvider.cs

@@ -0,0 +1,44 @@
+using System.Collections.Concurrent;
+using Microsoft.Extensions.Caching.Memory;
+using ShardingCore.Core.ModelCacheLockerProviders;
+using ShardingCore.Helpers;
+
+namespace Sample.MySql;
+
+public class DicModelCacheLockerProvider:IModelCacheLockerProvider
+{
+    private readonly ConcurrentDictionary<string, object> _locks = new ConcurrentDictionary<string, object>();
+    public int GetCacheModelLockObjectSeconds()
+    {
+        return 20;
+    }
+
+    public CacheItemPriority GetCacheItemPriority()
+    {
+        return CacheItemPriority.High;
+    }
+
+    public int GetCacheEntrySize()
+    {
+        return 1;
+    }
+
+    public object GetCacheLockObject(object modelCacheKey)
+    {
+        var key = $"{modelCacheKey}";
+        Console.WriteLine("-----------------------------------------------DicModelCacheLockerProvider:"+key);
+        if (!_locks.TryGetValue(key, out var obj))
+        {
+            obj = new object();
+            if (_locks.TryAdd(key, obj))
+            {
+                return obj;
+            }
+            if (!_locks.TryGetValue(key, out  obj))
+            {
+                throw new Exception("错了");
+            }
+        }
+        return obj;
+    }
+}

samples/Sample.MySql/Startup.cs

@@ -1,6 +1,8 @@
 using System.Diagnostics;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
 using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.Extensions.Caching.Memory;
 using Sample.MySql.DbContexts;
 using Sample.MySql.Domain.Entities;
 using Sample.MySql.multi;
@@ -8,6 +10,7 @@ using Sample.MySql.Shardings;
 using ShardingCore;
 using ShardingCore.Bootstrappers;
 using ShardingCore.Core;
+using ShardingCore.Core.ModelCacheLockerProviders;
 using ShardingCore.Core.RuntimeContexts;
 using ShardingCore.EFCores;
 using ShardingCore.Extensions;
@@ -55,46 +58,7 @@ namespace Sample.MySql
         {
             // services.AddHostedService<AutoStart>();
             services.AddControllers();
-            // services.AddShardingDbContext<ShardingDefaultDbContext, DefaultDbContext>(o => o.UseMySql(hostBuilderContext.Configuration.GetSection("MySql")["ConnectionString"],new MySqlServerVersion("5.7.15"))
+            services.AddSingleton<IMemoryCache>(sp => new MemoryCache(new MemoryCacheOptions { SizeLimit = 102400 }));
-            //     ,op =>
-            //     {
-            //         op.EnsureCreatedWithOutShardingTable = true;
-            //         op.CreateShardingTableOnStart = true;
-            //         op.UseShardingOptionsBuilder((connection, builder) => builder.UseMySql(connection,new MySqlServerVersion("5.7.15")).UseLoggerFactory(efLogger),
-            //             (conStr,builder)=> builder.UseMySql(conStr,new MySqlServerVersion("5.7.15")).UseLoggerFactory(efLogger));
-            //         op.AddShardingTableRoute<SysUserModVirtualTableRoute>();
-            //         op.AddShardingTableRoute<SysUserSalaryVirtualTableRoute>();
-            //     });
-            // services.AddMultiShardingDbContext<OtherDbContext>()
-            //     .UseRouteConfig(op =>
-            //     {
-            //         op.AddShardingTableRoute<MyUserRoute>();
-            //     })
-            //     .UseConfig((sp,o) =>
-            //     {
-            //         o.ThrowIfQueryRouteNotMatch = false;
-            //         o.UseShardingQuery((conStr, builder) =>
-            //         {
-            //             builder.UseMySql(conStr, new MySqlServerVersion(new Version()))
-            //                 .UseLoggerFactory(efLogger)
-            //                 .EnableSensitiveDataLogging()
-            //                 .UseQueryTrackingBehavior(QueryTrackingBehavior.NoTracking);
-            //         });
-            //         o.UseShardingTransaction((connection, builder) =>
-            //         {
-            //             builder
-            //                 .UseMySql(connection, new MySqlServerVersion(new Version()))
-            //                 .UseLoggerFactory(efLogger)
-            //                 .EnableSensitiveDataLogging()
-            //                 .UseQueryTrackingBehavior(QueryTrackingBehavior.NoTracking);
-            //         });
-            //         o.UseShardingMigrationConfigure(b =>
-            //         {
-            //             b.ReplaceService<IMigrationsSqlGenerator, ShardingMySqlMigrationsSqlGenerator>();
-            //         });
-            //         o.AddDefaultDataSource("ds0",
-            //             "server=127.0.0.1;port=3306;database=dbdbdx;userid=root;password=root;");
-            //     }).ReplaceService<ITableEnsureManager, MySqlTableEnsureManager>().AddShardingCore();
             services.AddShardingDbContext<DefaultShardingDbContext>()
                 .UseRouteConfig(o =>
                 {
@@ -104,6 +68,11 @@ namespace Sample.MySql
                     o.AddShardingDataSourceRoute<SysUserModVirtualDataSourceRoute>();
                 }).UseConfig((sp,o) =>
                 {
+                    var memoryCache = sp.ApplicationServiceProvider.GetRequiredService<IMemoryCache>();
+                    o.UseExecutorDbContextConfigure(b =>
+                    {
+                        b.UseMemoryCache(memoryCache);
+                    });
                     o.CacheModelLockConcurrencyLevel = 1024;
                     o.CacheEntrySize = 1;
                     o.CacheModelLockObjectSeconds = 10;
@@ -139,7 +108,7 @@ namespace Sample.MySql
                     {
                         b.ReplaceService<IMigrationsSqlGenerator, ShardingMySqlMigrationsSqlGenerator>();
                     });
-                })
+                }).ReplaceService<IModelCacheLockerProvider,DicModelCacheLockerProvider>()
                 .AddShardingCore();
             // services.AddDbContext<DefaultShardingDbContext>(ShardingCoreExtension
             //     .UseMutliDefaultSharding<DefaultShardingDbContext>);

src/ShardingCore/Core/ModelCacheLockerProviders/DefaultModelCacheLockerProvider.cs

@@ -10,7 +10,7 @@ namespace ShardingCore.Core.ModelCacheLockerProviders
     public class DefaultModelCacheLockerProvider : IModelCacheLockerProvider
     {
         private readonly ShardingConfigOptions _shardingConfigOptions;
-        private readonly List<object> _locks;
+        private readonly object[] _locks;
 
         public DefaultModelCacheLockerProvider(ShardingConfigOptions shardingConfigOptions)
         {
@@ -21,10 +21,10 @@ namespace ShardingCore.Core.ModelCacheLockerProviders
                     $"{shardingConfigOptions.CacheModelLockConcurrencyLevel} should > 0");
             }
 
-            _locks = new List<object>(shardingConfigOptions.CacheModelLockConcurrencyLevel);
+            _locks = new object [shardingConfigOptions.CacheModelLockConcurrencyLevel];
             for (int i = 0; i < shardingConfigOptions.CacheModelLockConcurrencyLevel; i++)
             {
-                _locks.Add(new object());
+                _locks[i] = new object();
             }
         }
 
@@ -54,14 +54,13 @@ namespace ShardingCore.Core.ModelCacheLockerProviders
                     $"modelCacheKey is null cant {nameof(GetCacheLockObject)}");
             }
 
-            if (_locks.Count == 1)
+            if (_locks.Length == 1)
             {
                 return _locks[0];
             }
 
             var hashCode = (modelCacheKey.ToString() ?? "").GetHashCode();
-            var lockIndex = hashCode % _locks.Count;
+            var index = Math.Abs(hashCode % _locks.Length);
-            var index = lockIndex >= 0 ? lockIndex : Math.Abs(lockIndex);
             return _locks[index];
         }
     }

test/ShardingCore.CommonTest/CommonTest.cs

@@ -1,11 +1,44 @@
 using System.Diagnostics;
 using ShardingCore.Core.Collections;
+using ShardingCore.Helpers;
 using Xunit;
 
 namespace ShardingCore.CommonTest
 {
     public class CommonTest
     {
+        [Fact]
+        public void TestHashCode()
+        {
+            var list = new List<string>();
+            for (int i = 0; i < 100000; i++)
+            {
+                list.Add(Guid.NewGuid().ToString()+Guid.NewGuid().ToString()+Guid.NewGuid().ToString()+Guid.NewGuid().ToString());
+            }
+            Stopwatch sp =Stopwatch.StartNew();
+            for (int i = 0; i < 100000; i++)
+            {
+                
+                ShardingCoreHelper.GetStringHashCode(list[i]);
+            }
+            sp.Stop();
+            var x = sp.ElapsedMilliseconds;
+            sp.Restart();
+            for (int i = 0; i < 100000; i++)
+            {
+                list[i].GetHashCode();
+            }
+            sp.Stop();
+            var y = sp.ElapsedMilliseconds;
+            sp.Restart();
+            for (int i = 0; i < 100000; i++)
+            {
+                ShardingCoreHelper.GetStringHashCode(list[i]);
+            }
+            sp.Stop();
+            var z = sp.ElapsedMilliseconds;
+
+        }
         [Fact]
         public void TestList()
         {