Tag: scheduler

Schedule tasks are called twice with the @SnapLock annotation

java multiple-instances scheduler spring-boot

I want only one schedule method to work for many instances. I added the snap-scheduler to my project, and after that I deployed two different instances to the railway. And two entries about the execution of my method are added to the snap_lock table. Сan you explain where I went wrong? It`s scheduler config: …

Java Scheduler to Mail

backend email java scheduler spring

Given that I have two scheduled component classes uploading files respectively. I created a sending email method for each of them in order to send a reminder email to myself in case any uploading exceptions happened. the flow like this: Scheduler One — if exception during uploading —> sending a…

Spring Boot StackOverFlowError : Null

java scheduler spring spring-boot

I have a problem when I want save repository by foreach loop . By Foreach loop user come and save it to another entity User.class public class Attendance { } User.class This is user class of User Entity Error show :: java.lang.StackOverflowError: null Answer Mixing what I saw in your code and what you said in…

Scheduler not running in Spring Boot

java scheduler spring-boot

I have created a Spring Boot application. I have configured my class that contains the scheduler method startService(). Below is my code : Service Class : Main Class : I have annotated the class as @Component and also method as @Scheduled(fixedRate = 30000) that will running as a scheduler. But while running …

Java Scheduler Thread Switching

java scheduler threadpool

I’ve read somewhere that in Java scheduler, thread switching happens after execution of certain amount of instructions and not after a certain time (like schedulers used in operating systems). But the references were missing. I wanted to know if this is correct. Answer Java used to have a feature called…