{"id":19991836,"url":"https://github.com/2881099/SafeObjectPool","last_synced_at":"2025-05-04T11:30:22.557Z","repository":{"id":43774561,"uuid":"150949759","full_name":"2881099/SafeObjectPool","owner":"2881099","description":"应用场景：连接池，资源池等等","archived":false,"fork":false,"pushed_at":"2023-09-18T13:19:21.000Z","size":61,"stargazers_count":116,"open_issues_count":2,"forks_count":37,"subscribers_count":5,"default_branch":"master","last_synced_at":"2025-04-02T01:30:48.936Z","etag":null,"topics":["objectpool","pool","pooling"],"latest_commit_sha":null,"homepage":"","language":"C#","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/2881099.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2018-09-30T08:52:28.000Z","updated_at":"2025-03-26T05:55:13.000Z","dependencies_parsed_at":"2022-09-19T18:22:53.759Z","dependency_job_id":null,"html_url":"https://github.com/2881099/SafeObjectPool","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/2881099%2FSafeObjectPool","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/2881099%2FSafeObjectPool/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/2881099%2FSafeObjectPool/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/2881099%2FSafeObjectPool/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/2881099","download_url":"https://codeload.github.com/2881099/SafeObjectPool/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":252329019,"owners_count":21730536,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["objectpool","pool","pooling"],"created_at":"2024-11-13T04:51:56.094Z","updated_at":"2025-05-04T11:30:22.251Z","avatar_url":"https://github.com/2881099.png","language":"C#","funding_links":[],"categories":["C\\#"],"sub_categories":[],"readme":"## 介绍\n\n数据库操作通常是 new SqlConnection()、 Open()、 使用完后 Close()，其实 ado.net 驱动已经实现了连接池管理，不然每次创建、连接、释放相当浪费性能。假设网站的访问在某一时刻突然爆增100万次，new 100万个SqlConnection对象显然会炸掉服务，连接对象，每次创建，connect，disconnect，disponse，显然开销很大。目前看来，最适合做连接对象的池子，对象池里的连接对象，保持长链接，效率最大化。\n\nado.net自带的链接池不完美，比如占满的时候再请求会报错。ObjectPool 解决池用尽后，再请求不报错，排队等待机制。\n\n对象池容器化管理一批对象，重复使用从而提升性能，有序排队申请，使用完后归还资源。\n\n对象池在超过10秒仍然未获取到对象时，报出异常：\n\n\u003e SafeObjectPool 获取超时（10秒），设置 Policy.IsThrowGetTimeoutException 可以避免该异常。\n\n## 与dapper比武测试\n\n```csharp\n[HttpGet(\"vs_gen\")]\nasync public Task\u003cobject\u003e vs_gen() {\n\tvar select = Tag.Select;\n\tvar count = await select.CountAsync();\n\tvar items = await select.Page(page, limit).ToListAsync();\n\n\treturn new { count, items };\n}\n\n[HttpGet(\"vs_dapper\")]\nasync public Task\u003cobject\u003e vs_dapper() {\n\tvar conn = new SqlConnection(\"Data Source=.;Integrated Security=True;Initial Catalog=cms;Pooling=true;Max Pool Size=11\");\n\tconn.Open();\n\tvar count = await conn.ExecuteScalarAsync\u003cint\u003e(\"SELECT count(1) FROM[dbo].[tag] a\");\n\t//conn.Close();\n\n\t//conn = new SqlConnection(\"Data Source=.;Integrated Security=True;Initial Catalog=cms;Pooling=true;Max Pool Size=11\");\n\t//conn.Open();\n\tvar items = await conn.QueryAsync(\"SELECT TOP 20 a.[id], a.[parent_id], a.[name] FROM[dbo].[tag] a\");\n\tconn.Close();\n\n\treturn new { count, items };\n}\n```\n\n连接池最大为：10，11\n\nab -c 10 -n 1000 -s 6000 测试结果差不多\n\n-c 100 时，vs_dapper直接挂了，vs_gen没影响（使用了SafeObjectPool）\n\n\u003e 实践证明ado.net过于暴露，突然的高并发招架不住。\n\n## 应用场景\n\n* 数据库连接对象池\n\t\u003e [SQLServer连接池](https://github.com/2881099/dng.Mssql/blob/master/Mssql/SqlConnectionPool.cs)、[MySQL连接池](https://github.com/2881099/dng.Mysql/blob/master/MySql.Data.MySqlClient/MySqlConnectionPool.cs)、[PostgreSQL连接池](https://github.com/2881099/dng.Pgsql/blob/master/Npgsql/NpgsqlConnectionPool.cs)、[Redis连接池](https://github.com/2881099/csredis/blob/master/src/CSRedisCore/RedisClientPool.cs)\n* redis连接对象池\n\n## 安装\n\n\u003e Install-Package SafeObjectPool\n\n## 使用方法\n\n```csharp\nvar pool = new SafeObjectPool.ObjectPool\u003cMemoryStream\u003e(10, () =\u003e new MemoryStream(), obj =\u003e {\n\tif (DateTime.Now.Subtract(obj.LastGetTime).TotalSeconds \u003e 5) {\n\t\t// 对象超过5秒未活动，进行操作\n\t}\n});\n\nvar obj = pool.Get(); //借\npool.Return(obj); //归还\n\n//或者 using 自动归还\nusing (var obj = pool.Get()) {\n\n}\n```\n\n## SQLServer连接池\n\n```csharp\nvar pool = new System.Data.SqlClient.SqlConnectionPool(\"名称\", connectionString, 可用时触发的委托, 不可用时触发的委托);\nvar conn = pool.Get();\n\ntry {\n\t// 使用 ...\n\tpool.Return(conn); //正常归还\n} catch (Exception ex) {\n\tpool.Return(conn, ex); //发生错误时归还\n}\n```\n\n## MySQL连接池\n\n```csharp\nvar pool = new MySql.Data.MySqlClient.MySqlConnectionPool(\"名称\", connectionString, 可用时触发的委托, 不可用时触发的委托);\nvar conn = pool.Get();\n\ntry {\n\t// 使用 ...\n\tpool.Return(conn); //正常归还\n} catch (Exception ex) {\n\tpool.Return(conn, ex); //发生错误时归还\n}\n```\n\n## PostgreSQL连接池\n\n```csharp\nvar pool = new Npgsql.NpgsqlConnectionPool(\"名称\", connectionString, 可用时触发的委托, 不可用时触发的委托);\nvar conn = pool.Get();\n\ntry {\n\t// 使用 ...\n\tpool.Return(conn); //正常归还\n} catch (Exception ex) {\n\tpool.Return(conn, ex); //发生错误时归还\n}\n```\n\n## Redis连接池\n\n```csharp\nvar connectionString = \"127.0.0.1[:6379],password=,defaultDatabase=13,poolsize=50,ssl=false,writeBuffer=10240,prefix=key前辍\";\nvar pool = new CSRedis.RedisClientPool(\"名称\", connectionString, client =\u003e { });\nvar conn = pool.Get();\n\ntry {\n\t// 使用 ...\n\tpool.Return(conn); //正常归还\n} catch (Exception ex) {\n\tpool.Return(conn, ex); //发生错误时归还\n}\n```\n\n# 更多连接池正在开发中。。。","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2F2881099%2FSafeObjectPool","html_url":"https://awesome.ecosyste.ms/projects/github.com%2F2881099%2FSafeObjectPool","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2F2881099%2FSafeObjectPool/lists"}