Quartz.net 3.x使用總結(二)——Db持久化和集群

　　上一篇簡單介紹了Quartz.net的概念和基本用法，這一篇記錄一下Quartz.net通過數據庫持久化Trigger和Jobs等數據，並簡單配置Quartz.net的集群。

1.JobStore介紹

　　學習持久化和集群前我們先了解一下Quartz.net中的JobStore，JobStore用於追蹤任務調度相關的所有數據，如Job，Trigger，Calendar等。Quartz.net 提供了兩種JobStore:RAMJobStore,AdoJobStore。

RAMJobStore

　　RAMJobStore是最簡單的JobStore，顧名思義這種JobStore將所有的數據都存放在內存中，這也是它運行速度快的原因，但是弊端也很明顯:一旦應用結束或者遇到斷電所有的數據都會丟失。RAMJobStore是默認的JobStore，我們也已通過下邊的代碼來顯式設置使用的JobStore為RAMJobStore。

quartz.jobStore.type = Quartz.Simpl.RAMJobStore, Quartz

AdoJobStore

　　AdoJobStore通過Ado.net將數據存儲在數據庫中，因此可以解決斷電數據丟失的問題，但是因為要讀寫數據庫所以效率相對較低。AdoJobStore官方支持的數據庫有：MySql,SqlServer,Sqllite,Oracle等，當前AdoJobStore只有一種類型JobStoreTX，這一點不同於Jave版本，java版本還有JobStoreCMT類型。

2.Db持久化和集群配置

　　Quartz.net配置數據庫持久化和集群比較容易，可以分為簡單的兩步：

第一步：添加數據庫表

　　我們首先要在數據庫中添加一系列的表（在Quartz項目的database/tables文件夾下可以找到各種數據庫表的生成腳本，Git地址https://github.com/quartznet/quartznet/tree/master/database/tables）。以Sqlserver為例，Sqlserver的數據表生成腳本如下：

-- this script is for SQL Server and Azure SQL
create database [QuartzDb]
go
USE [QuartzDb]
GO

IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[FK_QRTZ_TRIGGERS_QRTZ_JOB_DETAILS]') AND OBJECTPROPERTY(id, N'ISFOREIGNKEY') = 1)
ALTER TABLE [dbo].[QRTZ_TRIGGERS] DROP CONSTRAINT FK_QRTZ_TRIGGERS_QRTZ_JOB_DETAILS
GO

IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[FK_QRTZ_CRON_TRIGGERS_QRTZ_TRIGGERS]') AND OBJECTPROPERTY(id, N'ISFOREIGNKEY') = 1)
ALTER TABLE [dbo].[QRTZ_CRON_TRIGGERS] DROP CONSTRAINT FK_QRTZ_CRON_TRIGGERS_QRTZ_TRIGGERS
GO

IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[FK_QRTZ_SIMPLE_TRIGGERS_QRTZ_TRIGGERS]') AND OBJECTPROPERTY(id, N'ISFOREIGNKEY') = 1)
ALTER TABLE [dbo].[QRTZ_SIMPLE_TRIGGERS] DROP CONSTRAINT FK_QRTZ_SIMPLE_TRIGGERS_QRTZ_TRIGGERS
GO

IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[FK_QRTZ_SIMPROP_TRIGGERS_QRTZ_TRIGGERS]') AND OBJECTPROPERTY(id, N'ISFOREIGNKEY') = 1)
ALTER TABLE [dbo].[QRTZ_SIMPROP_TRIGGERS] DROP CONSTRAINT FK_QRTZ_SIMPROP_TRIGGERS_QRTZ_TRIGGERS
GO

IF  EXISTS (SELECT * FROM sys.foreign_keys WHERE object_id = OBJECT_ID(N'[dbo].[FK_QRTZ_JOB_LISTENERS_QRTZ_JOB_DETAILS]') AND parent_object_id = OBJECT_ID(N'[dbo].[QRTZ_JOB_LISTENERS]'))
ALTER TABLE [dbo].[QRTZ_JOB_LISTENERS] DROP CONSTRAINT [FK_QRTZ_JOB_LISTENERS_QRTZ_JOB_DETAILS]

IF  EXISTS (SELECT * FROM sys.foreign_keys WHERE object_id = OBJECT_ID(N'[dbo].[FK_QRTZ_TRIGGER_LISTENERS_QRTZ_TRIGGERS]') AND parent_object_id = OBJECT_ID(N'[dbo].[QRTZ_TRIGGER_LISTENERS]'))
ALTER TABLE [dbo].[QRTZ_TRIGGER_LISTENERS] DROP CONSTRAINT [FK_QRTZ_TRIGGER_LISTENERS_QRTZ_TRIGGERS]


IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[QRTZ_CALENDARS]') AND OBJECTPROPERTY(id, N'ISUSERTABLE') = 1)
DROP TABLE [dbo].[QRTZ_CALENDARS]
GO

IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[QRTZ_CRON_TRIGGERS]') AND OBJECTPROPERTY(id, N'ISUSERTABLE') = 1)
DROP TABLE [dbo].[QRTZ_CRON_TRIGGERS]
GO

IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[QRTZ_BLOB_TRIGGERS]') AND OBJECTPROPERTY(id, N'ISUSERTABLE') = 1)
DROP TABLE [dbo].[QRTZ_BLOB_TRIGGERS]
GO

IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[QRTZ_FIRED_TRIGGERS]') AND OBJECTPROPERTY(id, N'ISUSERTABLE') = 1)
DROP TABLE [dbo].[QRTZ_FIRED_TRIGGERS]
GO

IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[QRTZ_PAUSED_TRIGGER_GRPS]') AND OBJECTPROPERTY(id, N'ISUSERTABLE') = 1)
DROP TABLE [dbo].[QRTZ_PAUSED_TRIGGER_GRPS]
GO

IF  EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[QRTZ_JOB_LISTENERS]') AND type in (N'U'))
DROP TABLE [dbo].[QRTZ_JOB_LISTENERS]

IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[QRTZ_SCHEDULER_STATE]') AND OBJECTPROPERTY(id, N'ISUSERTABLE') = 1)
DROP TABLE [dbo].[QRTZ_SCHEDULER_STATE]
GO

IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[QRTZ_LOCKS]') AND OBJECTPROPERTY(id, N'ISUSERTABLE') = 1)
DROP TABLE [dbo].[QRTZ_LOCKS]
GO
IF  EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[QRTZ_TRIGGER_LISTENERS]') AND type in (N'U'))
DROP TABLE [dbo].[QRTZ_TRIGGER_LISTENERS]


IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[QRTZ_JOB_DETAILS]') AND OBJECTPROPERTY(id, N'ISUSERTABLE') = 1)
DROP TABLE [dbo].[QRTZ_JOB_DETAILS]
GO

IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[QRTZ_SIMPLE_TRIGGERS]') AND OBJECTPROPERTY(id, N'ISUSERTABLE') = 1)
DROP TABLE [dbo].[QRTZ_SIMPLE_TRIGGERS]
GO

IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[QRTZ_SIMPROP_TRIGGERS]') AND OBJECTPROPERTY(id, N'ISUSERTABLE') = 1)
DROP TABLE [dbo].QRTZ_SIMPROP_TRIGGERS
GO

IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].[QRTZ_TRIGGERS]') AND OBJECTPROPERTY(id, N'ISUSERTABLE') = 1)
DROP TABLE [dbo].[QRTZ_TRIGGERS]
GO

CREATE TABLE [dbo].[QRTZ_CALENDARS] (
  [SCHED_NAME] [NVARCHAR] (120)  NOT NULL ,
  [CALENDAR_NAME] [NVARCHAR] (200)  NOT NULL ,
  [CALENDAR] [VARBINARY](MAX) NOT NULL
)
GO

CREATE TABLE [dbo].[QRTZ_CRON_TRIGGERS] (
  [SCHED_NAME] [NVARCHAR] (120)  NOT NULL ,
  [TRIGGER_NAME] [NVARCHAR] (150)  NOT NULL ,
  [TRIGGER_GROUP] [NVARCHAR] (150)  NOT NULL ,
  [CRON_EXPRESSION] [NVARCHAR] (120)  NOT NULL ,
  [TIME_ZONE_ID] [NVARCHAR] (80) 
)
GO

CREATE TABLE [dbo].[QRTZ_FIRED_TRIGGERS] (
  [SCHED_NAME] [NVARCHAR] (120)  NOT NULL ,
  [ENTRY_ID] [NVARCHAR] (140)  NOT NULL ,
  [TRIGGER_NAME] [NVARCHAR] (150)  NOT NULL ,
  [TRIGGER_GROUP] [NVARCHAR] (150)  NOT NULL ,
  [INSTANCE_NAME] [NVARCHAR] (200)  NOT NULL ,
  [FIRED_TIME] [BIGINT] NOT NULL ,
  [SCHED_TIME] [BIGINT] NOT NULL ,
  [PRIORITY] [INTEGER] NOT NULL ,
  [STATE] [NVARCHAR] (16)  NOT NULL,
  [JOB_NAME] [NVARCHAR] (150)  NULL ,
  [JOB_GROUP] [NVARCHAR] (150)  NULL ,
  [IS_NONCONCURRENT] BIT  NULL ,
  [REQUESTS_RECOVERY] BIT  NULL 
)
GO

CREATE TABLE [dbo].[QRTZ_PAUSED_TRIGGER_GRPS] (
  [SCHED_NAME] [NVARCHAR] (120)  NOT NULL ,
  [TRIGGER_GROUP] [NVARCHAR] (150)  NOT NULL 
)
GO

CREATE TABLE [dbo].[QRTZ_SCHEDULER_STATE] (
  [SCHED_NAME] [NVARCHAR] (120)  NOT NULL ,
  [INSTANCE_NAME] [NVARCHAR] (200)  NOT NULL ,
  [LAST_CHECKIN_TIME] [BIGINT] NOT NULL ,
  [CHECKIN_INTERVAL] [BIGINT] NOT NULL
)
GO

CREATE TABLE [dbo].[QRTZ_LOCKS] (
  [SCHED_NAME] [NVARCHAR] (120)  NOT NULL ,
  [LOCK_NAME] [NVARCHAR] (40)  NOT NULL 
)
GO

CREATE TABLE [dbo].[QRTZ_JOB_DETAILS] (
  [SCHED_NAME] [NVARCHAR] (120)  NOT NULL ,
  [JOB_NAME] [NVARCHAR] (150)  NOT NULL ,
  [JOB_GROUP] [NVARCHAR] (150)  NOT NULL ,
  [DESCRIPTION] [NVARCHAR] (250) NULL ,
  [JOB_CLASS_NAME] [NVARCHAR] (250)  NOT NULL ,
  [IS_DURABLE] BIT  NOT NULL ,
  [IS_NONCONCURRENT] BIT  NOT NULL ,
  [IS_UPDATE_DATA] BIT  NOT NULL ,
  [REQUESTS_RECOVERY] BIT  NOT NULL ,
  [JOB_DATA] [VARBINARY](MAX) NULL
)
GO

CREATE TABLE [dbo].[QRTZ_SIMPLE_TRIGGERS] (
  [SCHED_NAME] [NVARCHAR] (120)  NOT NULL ,
  [TRIGGER_NAME] [NVARCHAR] (150)  NOT NULL ,
  [TRIGGER_GROUP] [NVARCHAR] (150)  NOT NULL ,
  [REPEAT_COUNT] [INTEGER] NOT NULL ,
  [REPEAT_INTERVAL] [BIGINT] NOT NULL ,
  [TIMES_TRIGGERED] [INTEGER] NOT NULL
)
GO

CREATE TABLE [dbo].[QRTZ_SIMPROP_TRIGGERS] (
  [SCHED_NAME] [NVARCHAR] (120)  NOT NULL ,
  [TRIGGER_NAME] [NVARCHAR] (150)  NOT NULL ,
  [TRIGGER_GROUP] [NVARCHAR] (150)  NOT NULL ,
  [STR_PROP_1] [NVARCHAR] (512) NULL,
  [STR_PROP_2] [NVARCHAR] (512) NULL,
  [STR_PROP_3] [NVARCHAR] (512) NULL,
  [INT_PROP_1] [INT] NULL,
  [INT_PROP_2] [INT] NULL,
  [LONG_PROP_1] [BIGINT] NULL,
  [LONG_PROP_2] [BIGINT] NULL,
  [DEC_PROP_1] [NUMERIC] (13,4) NULL,
  [DEC_PROP_2] [NUMERIC] (13,4) NULL,
  [BOOL_PROP_1] BIT NULL,
  [BOOL_PROP_2] BIT NULL,
  [TIME_ZONE_ID] [NVARCHAR] (80) NULL 
)
GO

CREATE TABLE [dbo].[QRTZ_BLOB_TRIGGERS] (
  [SCHED_NAME] [NVARCHAR] (120)  NOT NULL ,
  [TRIGGER_NAME] [NVARCHAR] (150)  NOT NULL ,
  [TRIGGER_GROUP] [NVARCHAR] (150)  NOT NULL ,
  [BLOB_DATA] [VARBINARY](MAX) NULL
)
GO

CREATE TABLE [dbo].[QRTZ_TRIGGERS] (
  [SCHED_NAME] [NVARCHAR] (120)  NOT NULL ,
  [TRIGGER_NAME] [NVARCHAR] (150)  NOT NULL ,
  [TRIGGER_GROUP] [NVARCHAR] (150)  NOT NULL ,
  [JOB_NAME] [NVARCHAR] (150)  NOT NULL ,
  [JOB_GROUP] [NVARCHAR] (150)  NOT NULL ,
  [DESCRIPTION] [NVARCHAR] (250) NULL ,
  [NEXT_FIRE_TIME] [BIGINT] NULL ,
  [PREV_FIRE_TIME] [BIGINT] NULL ,
  [PRIORITY] [INTEGER] NULL ,
  [TRIGGER_STATE] [NVARCHAR] (16)  NOT NULL ,
  [TRIGGER_TYPE] [NVARCHAR] (8)  NOT NULL ,
  [START_TIME] [BIGINT] NOT NULL ,
  [END_TIME] [BIGINT] NULL ,
  [CALENDAR_NAME] [NVARCHAR] (200)  NULL ,
  [MISFIRE_INSTR] [INTEGER] NULL ,
  [JOB_DATA] [VARBINARY](MAX) NULL
)
GO

ALTER TABLE [dbo].[QRTZ_CALENDARS] WITH NOCHECK ADD
  CONSTRAINT [PK_QRTZ_CALENDARS] PRIMARY KEY  CLUSTERED
  (
    [SCHED_NAME],
    [CALENDAR_NAME]
  ) 
GO

ALTER TABLE [dbo].[QRTZ_CRON_TRIGGERS] WITH NOCHECK ADD
  CONSTRAINT [PK_QRTZ_CRON_TRIGGERS] PRIMARY KEY  CLUSTERED
  (
    [SCHED_NAME],
    [TRIGGER_NAME],
    [TRIGGER_GROUP]
  ) 
GO

ALTER TABLE [dbo].[QRTZ_FIRED_TRIGGERS] WITH NOCHECK ADD
  CONSTRAINT [PK_QRTZ_FIRED_TRIGGERS] PRIMARY KEY  CLUSTERED
  (
    [SCHED_NAME],
    [ENTRY_ID]
  ) 
GO

ALTER TABLE [dbo].[QRTZ_PAUSED_TRIGGER_GRPS] WITH NOCHECK ADD
  CONSTRAINT [PK_QRTZ_PAUSED_TRIGGER_GRPS] PRIMARY KEY  CLUSTERED
  (
    [SCHED_NAME],
    [TRIGGER_GROUP]
  ) 
GO

ALTER TABLE [dbo].[QRTZ_SCHEDULER_STATE] WITH NOCHECK ADD
  CONSTRAINT [PK_QRTZ_SCHEDULER_STATE] PRIMARY KEY  CLUSTERED
  (
    [SCHED_NAME],
    [INSTANCE_NAME]
  ) 
GO

ALTER TABLE [dbo].[QRTZ_LOCKS] WITH NOCHECK ADD
  CONSTRAINT [PK_QRTZ_LOCKS] PRIMARY KEY  CLUSTERED
  (
    [SCHED_NAME],
    [LOCK_NAME]
  ) 
GO

ALTER TABLE [dbo].[QRTZ_JOB_DETAILS] WITH NOCHECK ADD
  CONSTRAINT [PK_QRTZ_JOB_DETAILS] PRIMARY KEY  CLUSTERED
  (
    [SCHED_NAME],
    [JOB_NAME],
    [JOB_GROUP]
  ) 
GO

ALTER TABLE [dbo].[QRTZ_SIMPLE_TRIGGERS] WITH NOCHECK ADD
  CONSTRAINT [PK_QRTZ_SIMPLE_TRIGGERS] PRIMARY KEY  CLUSTERED
  (
    [SCHED_NAME],
    [TRIGGER_NAME],
    [TRIGGER_GROUP]
  ) 
GO

ALTER TABLE [dbo].[QRTZ_SIMPROP_TRIGGERS] WITH NOCHECK ADD
  CONSTRAINT [PK_QRTZ_SIMPROP_TRIGGERS] PRIMARY KEY  CLUSTERED
  (
    [SCHED_NAME],
    [TRIGGER_NAME],
    [TRIGGER_GROUP]
  ) 
GO

ALTER TABLE [dbo].[QRTZ_TRIGGERS] WITH NOCHECK ADD
  CONSTRAINT [PK_QRTZ_TRIGGERS] PRIMARY KEY  CLUSTERED
  (
    [SCHED_NAME],
    [TRIGGER_NAME],
    [TRIGGER_GROUP]
  ) 
GO

ALTER TABLE [dbo].QRTZ_BLOB_TRIGGERS WITH NOCHECK ADD
  CONSTRAINT [PK_QRTZ_BLOB_TRIGGERS] PRIMARY KEY  CLUSTERED
  (
    [SCHED_NAME],
    [TRIGGER_NAME],
    [TRIGGER_GROUP]
  ) 
GO

ALTER TABLE [dbo].[QRTZ_CRON_TRIGGERS] ADD
  CONSTRAINT [FK_QRTZ_CRON_TRIGGERS_QRTZ_TRIGGERS] FOREIGN KEY
  (
    [SCHED_NAME],
    [TRIGGER_NAME],
    [TRIGGER_GROUP]
  ) REFERENCES [dbo].[QRTZ_TRIGGERS] (
    [SCHED_NAME],
    [TRIGGER_NAME],
    [TRIGGER_GROUP]
  ) ON DELETE CASCADE
GO

ALTER TABLE [dbo].[QRTZ_SIMPLE_TRIGGERS] ADD
  CONSTRAINT [FK_QRTZ_SIMPLE_TRIGGERS_QRTZ_TRIGGERS] FOREIGN KEY
  (
    [SCHED_NAME],
    [TRIGGER_NAME],
    [TRIGGER_GROUP]
  ) REFERENCES [dbo].[QRTZ_TRIGGERS] (
    [SCHED_NAME],
    [TRIGGER_NAME],
    [TRIGGER_GROUP]
  ) ON DELETE CASCADE
GO

ALTER TABLE [dbo].[QRTZ_SIMPROP_TRIGGERS] ADD
  CONSTRAINT [FK_QRTZ_SIMPROP_TRIGGERS_QRTZ_TRIGGERS] FOREIGN KEY
  (
    [SCHED_NAME],
    [TRIGGER_NAME],
    [TRIGGER_GROUP]
  ) REFERENCES [dbo].[QRTZ_TRIGGERS] (
    [SCHED_NAME],
    [TRIGGER_NAME],
    [TRIGGER_GROUP]
  ) ON DELETE CASCADE
GO

ALTER TABLE [dbo].[QRTZ_TRIGGERS] ADD
  CONSTRAINT [FK_QRTZ_TRIGGERS_QRTZ_JOB_DETAILS] FOREIGN KEY
  (
    [SCHED_NAME],
    [JOB_NAME],
    [JOB_GROUP]
  ) REFERENCES [dbo].[QRTZ_JOB_DETAILS] (
    [SCHED_NAME],
    [JOB_NAME],
    [JOB_GROUP]
  )
GO

CREATE INDEX IDX_QRTZ_T_J ON QRTZ_TRIGGERS(SCHED_NAME,JOB_NAME,JOB_GROUP)
CREATE INDEX IDX_QRTZ_T_JG ON QRTZ_TRIGGERS(SCHED_NAME,JOB_GROUP)
CREATE INDEX IDX_QRTZ_T_C ON QRTZ_TRIGGERS(SCHED_NAME,CALENDAR_NAME)
CREATE INDEX IDX_QRTZ_T_G ON QRTZ_TRIGGERS(SCHED_NAME,TRIGGER_GROUP)
CREATE INDEX IDX_QRTZ_T_STATE ON QRTZ_TRIGGERS(SCHED_NAME,TRIGGER_STATE)
CREATE INDEX IDX_QRTZ_T_N_STATE ON QRTZ_TRIGGERS(SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP,TRIGGER_STATE)
CREATE INDEX IDX_QRTZ_T_N_G_STATE ON QRTZ_TRIGGERS(SCHED_NAME,TRIGGER_GROUP,TRIGGER_STATE)
CREATE INDEX IDX_QRTZ_T_NEXT_FIRE_TIME ON QRTZ_TRIGGERS(SCHED_NAME,NEXT_FIRE_TIME)
CREATE INDEX IDX_QRTZ_T_NFT_ST ON QRTZ_TRIGGERS(SCHED_NAME,TRIGGER_STATE,NEXT_FIRE_TIME)
CREATE INDEX IDX_QRTZ_T_NFT_MISFIRE ON QRTZ_TRIGGERS(SCHED_NAME,MISFIRE_INSTR,NEXT_FIRE_TIME)
CREATE INDEX IDX_QRTZ_T_NFT_ST_MISFIRE ON QRTZ_TRIGGERS(SCHED_NAME,MISFIRE_INSTR,NEXT_FIRE_TIME,TRIGGER_STATE)
CREATE INDEX IDX_QRTZ_T_NFT_ST_MISFIRE_GRP ON QRTZ_TRIGGERS(SCHED_NAME,MISFIRE_INSTR,NEXT_FIRE_TIME,TRIGGER_GROUP,TRIGGER_STATE)

CREATE INDEX IDX_QRTZ_FT_TRIG_INST_NAME ON QRTZ_FIRED_TRIGGERS(SCHED_NAME,INSTANCE_NAME)
CREATE INDEX IDX_QRTZ_FT_INST_JOB_REQ_RCVRY ON QRTZ_FIRED_TRIGGERS(SCHED_NAME,INSTANCE_NAME,REQUESTS_RECOVERY)
CREATE INDEX IDX_QRTZ_FT_J_G ON QRTZ_FIRED_TRIGGERS(SCHED_NAME,JOB_NAME,JOB_GROUP)
CREATE INDEX IDX_QRTZ_FT_JG ON QRTZ_FIRED_TRIGGERS(SCHED_NAME,JOB_GROUP)
CREATE INDEX IDX_QRTZ_FT_T_G ON QRTZ_FIRED_TRIGGERS(SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP)
CREATE INDEX IDX_QRTZ_FT_TG ON QRTZ_FIRED_TRIGGERS(SCHED_NAME,TRIGGER_GROUP)
GO

在Sqlserver管理器中新建查詢，粘貼上邊的腳本，運行即可生成Quartz的數據庫表，數據庫的結構如下：

第二部：配置QuartzFactory屬性，直接看代碼：

    class Program
    {
        public static void Main(string[] args)
        {
            NameValueCollection pars = new NameValueCollection
            {
                //scheduler名字
                ["quartz.scheduler.instanceName"] = "MyScheduler",
                //線程池個數
                ["quartz.threadPool.threadCount"] = "20",
                //類型為JobStoreXT,事務
                ["quartz.jobStore.type"] = "Quartz.Impl.AdoJobStore.JobStoreTX, Quartz",
                //JobDataMap中的數據都是字符串
                //["quartz.jobStore.useProperties"] = "true",
                //數據源名稱
                ["quartz.jobStore.dataSource"] = "myDS",
                //數據表名前綴
                ["quartz.jobStore.tablePrefix"] = "QRTZ_",
                //使用Sqlserver的Ado操作代理類
                ["quartz.jobStore.driverDelegateType"] = "Quartz.Impl.AdoJobStore.SqlServerDelegate, Quartz",
                //數據源連接字符串
                ["quartz.dataSource.myDS.connectionString"] = "Server=[yourserver];Database=quartzDb;Uid=sa;Pwd=[yourpass]",
                //數據源的數據庫
                ["quartz.dataSource.myDS.provider"] = "SqlServer",
                //序列化類型
                ["quartz.serializer.type"] = "json",//binary
                //自動生成scheduler實例ID，主要為了保證集群中的實例具有唯一標識
                ["quartz.scheduler.instanceId"] = "AUTO",
                //是否配置集群
                ["quartz.jobStore.clustered"] = "true",
            };
            StdSchedulerFactory factory = new StdSchedulerFactory(pars);
            IScheduler scheduler = factory.GetScheduler().Result;
            scheduler.Start();
            IJobDetail job = JobBuilder.Create<MyJob>()
                .WithIdentity("job1", "g1")
                .Build();
            ITrigger trigger = TriggerBuilder.Create().WithIdentity("trigger1", "g1").WithCronSchedule("0/1 * * * * ?").Build();
            if (scheduler.CheckExists(job.Key).Result)
            {
                scheduler.DeleteJob(job.Key).Wait();
            }
            scheduler.ScheduleJob(job, trigger).Wait();
        }
    }

    public class MyJob : IJob
    {
        public async Task Execute(IJobExecutionContext context)
        {
            await Task.Run(() =>
            {
                Console.WriteLine($"hello! 當前時間：{DateTime.Now}");
                Console.WriteLine($"觸發時間：{context.ScheduledFireTimeUtc?.LocalDateTime},下次觸發時間：{context.NextFireTimeUtc?.LocalDateTime}");
                Console.WriteLine();

            });
        }
    }

　　上邊的代碼配置信息在代碼中都有注釋，這個栗子實現了一個簡單的任務調度：每秒打印一次任務的觸發時間和下次觸發時間。然后運行項目即可，到這里Db持久化和集群都配置完成了。運行程序Quartz會自動在數據庫中記錄調度任務相關的數據

Quartz自動向數據庫寫入的trigger信息：

Quartz自動向數據庫寫入的Job信息：

程序執行結果：

 到這里我們看到了Db持久化已經實現了，但是上邊的栗子，我們在代碼中通過 ["quartz.jobStore.clustered"] = "true" 配置了集群，這個有什么用呢？

 首先添加一個debug文件夾的副本

然后運行這兩個文件夾下的xxx.exe文件（如果使用的是.net core，生成的是xxx.dll文件,進入dll文件所在目錄，命令行運行 dotnet xxx.dll 即可啟動）,運行結果如下：

　　如上所示，運行兩個xxx.exe（core中是dll）后，原文件和副本在同一時間只有一個在運行，所以我們調度的任務沒有重復執行。如果我們關掉正在執行的那個程序，那么另一個程序會開始執行。我們可以得出結論：Quartz的集群並不會造成任務重復執行，而且當一個服務器掛了后，另一個服務器會自動開始執行，這種機制大大增加了任務調度的容災性能。

3.一些需要注意的地方

1.Quartz3.x支持async和await，為提高性能，我們最好將Job中的Execute方法都寫成異步方法；

2.不管使用的是RAMJobStore還是AdoJobStore，千萬不要通過代碼來直接操作JobStore（比如我們直接通過代碼修改數據庫中的數據），JobStore讓Quartz自動操作即可。無論使用場景是web應用還是桌面程序，我們只使用Scheduler提供的接口方法來實現Job和Trigger等的增/刪/改/查/暫停/恢復即可。