worker.listen.port 1234 int worker listen port worker.exec.threads 100 int worker execute thread number to limit task instances in parallel worker.heartbeat.interval 10 int worker heartbeat interval, the unit is second worker.max.cpuload.avg -1 int worker max cpuload avg, only higher than the system cpu load average, worker server can be dispatched tasks. default value -1: the number of cpu cores * 2 worker.reserved.memory 0.3 worker reserved memory, only lower than system available memory, worker server can be dispatched tasks. default value 0.3, the unit is G worker.groups default default worker groups separated by comma, like 'worker.groups=default,test'