Cron Jobs (edit)

• Load Balancing
• Docker container
• Prevent duplicate cron jobs running

Install-Package Cronos

NuGet Gallery | Cronos 0.7.1

Cronos - NuGet Must Haves Package

Cronos 0.7.1 on NuGet - Libraries.io

Fully-featured .NET library for working with Cron expressions. Built with time zones in mind and intuitively handles daylight saving time transitions

HangfireIO/Cronos: Fully-featured .NET library for working with Cron expressions. Built with time zones in mind and intuitively handles daylight saving time transitions (github.com)

Cronos is a .NET library for parsing Cron expressions and calculating next occurrences. It was designed with time zones in mind, and intuitively handles Daylight saving time (also known as Summer time) transitions as in *nix Cron.

Please note this library doesn't include any task/job scheduler, it only works with Cron expressions.

• Supports standard Cron format with optional seconds.
• Supports non-standard characters like L, W, # and their combinations.
• Supports reversed ranges, like 23-01 (equivalent to 23,00,01) or DEC-FEB (equivalent to DEC,JAN,FEB).
• Supports time zones, and performs all the date/time conversions for you.
• Does not skip occurrences, when the clock jumps forward to Daylight saving time (known as Summer time).
• Does not skip interval-based occurrences, when the clock jumps backward from Summer time.
• Does not retry non-interval based occurrences, when the clock jumps backward from Summer time.
• Contains 1000+ unit tests to ensure everything is working correctly.

Releases · HangfireIO/Cronos (github.com)

HangfireIO/Hangfire v1.7.0 on GitHub (newreleases.io)

Common Load Balancer Issues

What Is Load Balancing? How Load Balancers Work (nginx.com)

Load Balancing 101 - Learn All About Load Balancers (avinetworks.com)

Troubleshoot your Network Load Balancer - Elastic Load Balancing (amazon.com)

Troubleshoot common issues Azure Load Balancer | Microsoft Docs

Troubleshooting Internal HTTP(S) Load Balancing  |  Google Cloud

Troubleshooting Internal TCP/UDP Load Balancing  |  Google Cloud

Common Load Balancer Issues (vmware.com)

This topic discusses several issues and how to resolve them.

Cron Jobs (edit)

Crontab.guru - The cron schedule expression editor (HAY HAY HAY)

How to run cron job every day in ASP.NET Core Application?

Creating a Quartz.NET hosted service with ASP.NET Core (andrewlock.net)

Hangfire – Background jobs and workers for .NET and .NET Core

Quartz.NET (quartz-scheduler.net)

dotnet-labs/ServiceWorkerCronJob: Schedule Cron Jobs using HostedService in ASP.NET Core (github.com)

Schedule Cron Jobs using HostedService in ASP.NET Core | by Changhui Xu | codeburst (HAY HAY HAY)

NuGet Gallery | Cronos 0.7.1 (HAY HAY HAY)

Releases · HangfireIO/Cronos (github.com) (HAY HAY HAY)

Schedule Background Jobs Using Hangfire in .NET Core | by Changhui Xu | codeburst (HAY HAY HAY)

HangfireIO/Cronos: Fully-featured .NET library for working with Cron expressions. Built with time zones in mind and intuitively handles daylight saving time transitions (github.com)

HangfireIO/Cronos: Fully-featured .NET library for working with Cron expressions. Built with time zones in mind and intuitively handles daylight saving time transitions (github.com)

Cronos

Cron job troubleshooting guide

Schedule Cron Jobs using HostedService in ASP.NET Core (HAY HAY HAY)

Cron - Wikipedia

Một vài ghi chú về Cron Job (dotnetcoban.com)

• .NET 5.0
• Using System.Timers.Timer
• Using TimeZone: Japan Standard Time (JST) is 9 hours ahead of Coordinated Universal Time (UTC)
  • TimeZone: UTC+09:00
  • Default Culture = "ja-JP"
  • For sending the Email with ja-JP
  • Thread.CurrentThread.CurrentCulture = CultureInfo.GetCultureInfo("ja-JP");
  • Thread.CurrentThread.CurrentUICulture = CultureInfo.GetCultureInfo("ja-JP");
• Cronos version 0.7.1
• AddSingleton...
• AddHostedService...

Nuget: Cronos

Version: 0.7.1

        /// <summary>
        /// Crontab First Day of Every Month
        /// https://crontab.tech/first-Day-of-Month
        /// Crontab run at 12:00 AM of First Day of Every Month:
        ///  0 0 1 * * /path/to/your/script-or-program
        /// -------------------------------------------
        /// Crontab run at 12:30 AM of First Day of Every Month:
        /// 30 0 1 * * /path/to/your/script-or-program
        /// -------------------------------------------
        /// Crontab run at 01:00 AM of First Day of Every Month:
        ///  0 1 1 * * /path/to/your/script-or-program
        /// -------------------------------------------
        /// Crontab run at 01:30 AM of First Day of Every Month:
        /// 30 1 1 * * /path/to/your/script-or-program
        /// </summary>
        /// <param name="time"></param>
        /// <returns></returns>
        protected static string GetCronExpression(string time)
        {
            if (string.IsNullOrEmpty(time)) return "";
            var arr = time.Split(':', StringSplitOptions.RemoveEmptyEntries);
 
            if (int.TryParse(arr[0], out int hour) && int.TryParse(arr.Length > 1 ? arr[1] : "0", out int minute))
            {
                return $"{minute} {hour} * * *";
            }
 
            return "";
        }

Cronos

Cronos là một bộ phim chính kịch kinh dị độc lập của Mexico năm 1993 do Guillermo del Toro viết kịch bản và đạo diễn với sự tham gia của Federico Luppi và Ron Perlman. Cronos là phim truyện đầu tiên của del Toro, và là phim đầu tiên trong số nhiều phim mà ông đã làm việc với Luppi và Perlman.

Chronos: Vị Thần Thời Gian Của Hy Lạp Và Thế Giới Đồng Hồ

Cronus

Cronus (tiếng Hy Lạp: Κρόνος; còn gọi là Kronos) là một vị thần trong thần thoại Hy Lạp. Thần là con út của Uranus và Gaia, và là một trong 12 Titan. Vị thần Saturn trong thần thoại La Mã được coi là tương đương với Cronus.