What is Openjob?

Openjob is a distributed and high-performance task scheduling framework that supports multiple cronjob, delay task, workflow, lightweight distributed computing, unlimited horizontal scaling, with high scalability and fault tolerance. Also has permission management, powerful alarm monitoring, and support multiple languages

Feature

Openjob not only supports basic cronjob, but also provides delayed jobs, distributed computing, and workflow

Cronjob

Cronjob，support Unix Crontab expression

Second，execution cycle less than 60 seconds

Fixed rate，execute tasks at a fixed frequency with minute unit

Delay Task

Distributed, high-performance delay task based on Redis, and providing rich reports and statistics

Distributed Computing

Standalone，execute on a worker client

Broadcast，execute on all worker clients

Map，a map function can distribute big data to multiple machines for execution, like Hadoop map

MapReduce，MapReduce is an extension of the Map.After all map sub-tasks are completed, the Reduce method is executed, which can process the results and data of the task execution in the Reduce method.

Sharding，like Elastic-Job model, configure sharding numbers on the management, which can be scheduled to different client by sharding, and supports multiple languages.

Processor

Processor, execute by function or class(support Java/Golang/PH)

HTTP, http request, used to periodically request an HTTP

Shell, shell script

Visual operations

Dashboard，rich task statistics and reports

Task history，task execution history records

Task log，complete task log, and suppport storage (H2/Mysql/Elasticsearch).

Task running stack，detailed recording of task execution stack information

Alarms and permissions

Provides task event monitoring alarms, detailed alarm histories, and support notifications with WeChat, Feishu, and webhook triggers.

Designed with namespace, support button-level access and easy to manage complex project.

Multiple languages

Java java and its frameworks, with native support.

Go golang support use go mod install

PHP PHP support use Golang agent to execute task by shell mode 。Swoole frameworks support composer install.

Python python support use Golang agent to execute task by shell mode

Use cases

Openjob is well-suited for business scenarios that have task schedule and delay task. such as every day to clean data and report generation. It is also suitable for lightweight computing, and Map/MapReduce can process big data computing. For complex task flows or workflow, it can design workflow with UI

Open source

Item	Quartz	Elastic-Job	XXL-JOB	Openjob
Cronjob	Cron	Cron	Cron	Cronjob second Onetime Fixed rate
Delay task	No	No	No	Distributed, high-performance delay task based on Redis
Workflow	No	No	No	Workflow design with UI
Distributed Computing	No	Sharding	Sharding	Broadcast Map/MapReduce Sharding
Multiple languages	Java	Java Shell	Java Shell	Java Go(Gin、beego) PHP(Swoft) Python(Agent) Shell HTTP Kettle
Visualization	No	Weak	Task history Task log（Not support storage） Dashboard	Task history Task log（support H2/Mysql/Elasticsearch） Dashboard Full permissions Task log stack
Manageable	No	enable、disable task	enable、disable task execute once stop	enable、disable task execute once kill stop
Alarms	No	email	email	custom event email webhook
Performance	Every task scheduling try to acquire a lock through the database, causes a high pressure on the database	ZooKeeper is performance bottleneck	Task scheduling is only by master, causes a high pressure on master	Uses sharding algorithm, each node can be scheduled without lock, supports unlimited horizontal scaling, and supports big task scheduling

Official website: https://openjob.io

Github: https://github.com/open-job/openjob

Live demo: https://demo.openjob.io

Openjob: distributed task scheduling framework