crawlab VS cron

Haven't tried but this project https://github.com/crawlab-team/crawlab looks promising.

The new version of Crawlab v0.6 split general functionalities into separated modules, so that the whole project is consisted of a few dependent sub-projects. For example, the main project crawlab depends on the front-end project crawlab-ui and back-end project crawlab-core. Higher decoupling and maintainability are the benefits.

GitHub Actions is the official CI/CD workflow service provided by GitHub. It is aimed at making it easy for open-source project contributors to manage operational maintenance, and enable open-source communities to embrace cloud-native DevOps. GitHub Actions is integrated into most of my open-source projects including Crawlab and ArtiPub. As a contributor, I think GitHub Actions is not only easy to use, but also free (which is the most important). Therefore, I hope this article will allow open-source project contributors who are not familiar with GitHub Actions, to really get ideas on how to utilize it and make an impact.

Task Scheduling is one of the most important features in software systems, which literally means assigning and executing long tasks or scripts according to certain specifications. In the web crawler management platform Crawlab, task scheduling serves as a core module, which you may wonder how to build it from scratch. This article will introduce you how to build a simple but useful task scheduler with Go.

Features - Supports Slack Apps using Socket Mode - Easy definitions of commands and their input - Built-in help command - Bot responds to mentions and direct messages - Simple parsing of String, Integer, Float and Boolean parameters - Customizable, intuitive and with many examples to follow - Replies can be new messages or in threads - Replies can be ephemeral, scheduled, updated or deleted - Supports Slash Commands and Interactive Messages - Supports context.Context - Supports middlewares & grouping of commands - Supports Cron Jobs using https://github.com/robfig/cron - Handlers run concurrently via goroutines - Full access to the Slack API github.com/slack-go/slack

You could this https://github.com/robfig/cron

This will print "Valid cron expression: */20 * * * *" to the console. You can find more information about this library, including installation instructions, on its GitHub page: https://github.com/robfig/cron

I used robfig/cron on each of the workers. I only had on the order of ~10 workers so polling was not an issue.

There are many excellent open-source projects on GitHub, where the code is transparent and available to everyone. As software developer, we can learn a lot from them including software engineering, unit testing, coding style standardization, etc. We can even find issues by looking into their code, and submit pull requests to contribute to tech communities. Today we are going to dig into the source code of a popular Golang open-source project on GitHub, robfig/cron, which is small and with clear annotations, and is very suitable for new developers to learn how to read and analyze source code.

Now let's implement the core of task scheduler, cron job. We will be using robfig/cron, a reputable cron library written in Go.

# Hello Everyone! Ive built this cronjob library after the trusted: https://github.com/robfig/cron.

I suggest this library.

You can take inspiration on cron lib, create a Job i's a function that you give a channel for quit action, and a probably cancel function (from background.WithCancel) for cancel running asynchronous task. You can have a scheduling worker if you decouple a great task to multiple job that listen to a channel that emit event.