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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.


High reliability

Distributed with stateless design, using the Master/Worker architecture, supports multiple databases (H2/MySQL/PostgreSQL/Oracle/TiDB).

High performance

System uses a consistency sharding algorithm, lock-free design, task scheduling is accurate down to the second, supporting lightweight distributed computing and unlimited horizontal scaling.


Supports distributed cronjob, fixed rate tasks, high-performance second tasks, and onetime tasks.

Distributed computing

Supports multiple distributed programming models such as standalone, broadcast, Map, MapReduce, and sharding, easy to complete distributed computing for big data.

Delay task

High performance delay task based on Redis , support multi-level storage, and provides rich statistics and reports.


Supports workflow scheduling engine, visual DAG design, and easy to complete complex task scheduling.

Permission management

User management, supports menu, button, and data permission settings, flexible management of user permissions.

Alarm monitoring

Overall monitoring metrics, rich and alarm in time, easy to locate and resolve online problem.

Multiple languages

Support multiple languages such as Java, Go, PHP, and Python, as well as build with frameworks such as Spring Boot, Gin, and Swoft.

Open source

CronjobCronCronCronCronjob, second, Onetime, Fixed rate
Delay taskNoNoNoDistributed high-performancedelay task based on Redis
WorkflowNoNoNoWorkflow design with UI
Distributed ComputingNoShardingShardingBroadcast, Map/MapReduce, Sharding
Multiple languagesJavaJava, ShellJava, ShellJava(Spring Boot), Go(Gin、beego), PHP(Swoft), Python(Agent), Shell, HTTP
VisualizationNoWeakTask history, Task log(Not support storage), DashboardTask history, Task log(support H2/Mysql/Elasticsearch), Dashboard, permissions, Task log stack
ManageableNoenable,disable taskenable、disable task, execute once, stopenable、disable task, execute once, kill, stop
AlarmsNoemailemailcustom event, email, webhook
PerformanceEvery task scheduling try to acquire a lock through the database, causes a high pressure on the databaseZooKeeper is performance bottleneckTask scheduling is only by master, causes a high pressure on masterUses sharding algorithm, each node can be scheduled without lock, supports unlimited horizontal scaling, and supports big task scheduling