前端：

1、优化消息排序逻辑
2、新增加载历史消息
3、修复已知问题
后端：
1、优化消息排序逻辑
2、增加用户信息缓存机制
3、修改日期类型为DateTimeOffset改善时区信息丢失问题
3、修复了已知问题
数据库：
1、新增SequenceId字段用于消息排序
2、新增ClientMsgId字段用于客户端消息回执

backend/IMTest/bin/Debug/net8.0/IMTest.deps.json

@@ -250,6 +250,14 @@
           "System.Text.Encodings.Web": "8.0.0"
         }
       },
+      "Microsoft.Bcl.AsyncInterfaces/1.1.0": {
+        "runtime": {
+          "lib/netstandard2.1/Microsoft.Bcl.AsyncInterfaces.dll": {
+            "assemblyVersion": "1.0.0.0",
+            "fileVersion": "4.700.19.56404"
+          }
+        }
+      },
       "Microsoft.CodeCoverage/17.8.0": {
         "runtime": {
           "lib/netcoreapp3.1/Microsoft.VisualStudio.CodeCoverage.Shim.dll": {
@@ -900,6 +908,24 @@
           }
         }
       },
+      "RedLock.net/2.3.2": {
+        "dependencies": {
+          "Microsoft.Bcl.AsyncInterfaces": "1.1.0",
+          "Microsoft.Extensions.Logging": "8.0.1",
+          "Microsoft.Extensions.Logging.Abstractions": "8.0.2",
+          "StackExchange.Redis": "2.9.32"
+        },
+        "runtime": {
+          "lib/netstandard2.0/RedLockNet.Abstractions.dll": {
+            "assemblyVersion": "2.3.2.0",
+            "fileVersion": "2.3.2.0"
+          },
+          "lib/netstandard2.0/RedLockNet.SERedis.dll": {
+            "assemblyVersion": "2.3.2.0",
+            "fileVersion": "2.3.2.0"
+          }
+        }
+      },
       "runtime.debian.8-x64.runtime.native.System.Security.Cryptography.OpenSsl/4.3.0": {},
       "runtime.fedora.23-x64.runtime.native.System.Security.Cryptography.OpenSsl/4.3.0": {},
       "runtime.fedora.24-x64.runtime.native.System.Security.Cryptography.OpenSsl/4.3.0": {},
@@ -1637,6 +1663,7 @@
           "Microsoft.VisualStudio.Azure.Containers.Tools.Targets": "1.22.1",
           "Newtonsoft.Json": "13.0.4",
           "Pomelo.EntityFrameworkCore.MySql": "8.0.3",
+          "RedLock.net": "2.3.2",
           "StackExchange.Redis": "2.9.32",
           "Swashbuckle.AspNetCore": "6.6.2",
           "System.IdentityModel.Tokens.Jwt": "8.14.0"
@@ -1852,6 +1879,13 @@
       "path": "microsoft.aspnetcore.webutilities/2.3.0",
       "hashPath": "microsoft.aspnetcore.webutilities.2.3.0.nupkg.sha512"
     },
+    "Microsoft.Bcl.AsyncInterfaces/1.1.0": {
+      "type": "package",
+      "serviceable": true,
+      "sha512": "sha512-1Am6l4Vpn3/K32daEqZI+FFr96OlZkgwK2LcT3pZ2zWubR5zTPW3/FkO1Rat9kb7oQOa4rxgl9LJHc5tspCWfg==",
+      "path": "microsoft.bcl.asyncinterfaces/1.1.0",
+      "hashPath": "microsoft.bcl.asyncinterfaces.1.1.0.nupkg.sha512"
+    },
     "Microsoft.CodeCoverage/17.8.0": {
       "type": "package",
       "serviceable": true,
@@ -2174,6 +2208,13 @@
       "path": "rabbitmq.client/7.1.2",
       "hashPath": "rabbitmq.client.7.1.2.nupkg.sha512"
     },
+    "RedLock.net/2.3.2": {
+      "type": "package",
+      "serviceable": true,
+      "sha512": "sha512-jlrALAArm4dCE292U3EtRoMnVKJ9M6sunbZn/oG5OuzlGtTpusXBfvDrnGWbgGDlWV027f5E9H5CiVnPxiq8+g==",
+      "path": "redlock.net/2.3.2",
+      "hashPath": "redlock.net.2.3.2.nupkg.sha512"
+    },
     "runtime.debian.8-x64.runtime.native.System.Security.Cryptography.OpenSsl/4.3.0": {
       "type": "package",
       "serviceable": true,

backend/IMTest/bin/Debug/net8.0/IM_API.deps.json

@@ -18,6 +18,7 @@
           "Microsoft.VisualStudio.Azure.Containers.Tools.Targets": "1.22.1",
           "Newtonsoft.Json": "13.0.4",
           "Pomelo.EntityFrameworkCore.MySql": "8.0.3",
+          "RedLock.net": "2.3.2",
           "StackExchange.Redis": "2.9.32",
           "Swashbuckle.AspNetCore": "6.6.2",
           "System.IdentityModel.Tokens.Jwt": "8.14.0"
@@ -822,6 +823,24 @@
           }
         }
       },
+      "RedLock.net/2.3.2": {
+        "dependencies": {
+          "Microsoft.Bcl.AsyncInterfaces": "6.0.0",
+          "Microsoft.Extensions.Logging": "8.0.1",
+          "Microsoft.Extensions.Logging.Abstractions": "8.0.2",
+          "StackExchange.Redis": "2.9.32"
+        },
+        "runtime": {
+          "lib/netstandard2.0/RedLockNet.Abstractions.dll": {
+            "assemblyVersion": "2.3.2.0",
+            "fileVersion": "2.3.2.0"
+          },
+          "lib/netstandard2.0/RedLockNet.SERedis.dll": {
+            "assemblyVersion": "2.3.2.0",
+            "fileVersion": "2.3.2.0"
+          }
+        }
+      },
       "StackExchange.Redis/2.9.32": {
         "dependencies": {
           "Microsoft.Extensions.Logging.Abstractions": "8.0.2",
@@ -1494,6 +1513,13 @@
       "path": "rabbitmq.client/7.1.2",
       "hashPath": "rabbitmq.client.7.1.2.nupkg.sha512"
     },
+    "RedLock.net/2.3.2": {
+      "type": "package",
+      "serviceable": true,
+      "sha512": "sha512-jlrALAArm4dCE292U3EtRoMnVKJ9M6sunbZn/oG5OuzlGtTpusXBfvDrnGWbgGDlWV027f5E9H5CiVnPxiq8+g==",
+      "path": "redlock.net/2.3.2",
+      "hashPath": "redlock.net.2.3.2.nupkg.sha512"
+    },
     "StackExchange.Redis/2.9.32": {
       "type": "package",
       "serviceable": true,