https://github.com/lukas-krecan/ShedLock

https://mvnrepository.com/artifact/net.javacrumbs.shedlock

baeldung
https://www.baeldung.com/shedlock-spring
2025
Lviv JavaClub [Event 388] ShedLock by Serhii Petrenko 0:00 of ...
    https://www.youtube.com/watch?v=ht5xUy4cEEQ
2023
https://jetherrodrigues.dev.br/efficient-job-scheduling-and-locking-in-spring-boot-applications-quartz-vs-shedlock-b3ccca18cfe5
https://medium.com/@marcoscarneirolima/scheduler-lock-using-spring-shedlock-b9ac3e51a934
2021
https://42talents.com/blog/2021/08/29/shedlock-with-spring-boot/
http://buraktas.com/spring-shedlock-tutorial/
https://habr.com/ru/articles/580062/
    good comment
2020
https://for-each.dev/lessons/b/-shedlock-spring

samples
@EnableScheduling
@EnableSchedulerLock(defaultLockAtMostFor = "PT60S")
@Configuration
public class ShedLockConfig {

    @Bean
    public LockProvider lockProvider(DataSource dataSource) {
        return new JdbcTemplateLockProvider(JdbcTemplateLockProvider.Configuration
                .builder()
                .withJdbcTemplate(new JdbcTemplate(dataSource))
                .usingDbTime() // Use database time for locks
                .build());
    }
}

spring/shedlock-spring/src/main/java/net/javacrumbs/shedlock/spring/aop/SpringLockConfigurationExtractor.java

    private final Converter<String, Duration> durationConverter;

    Duration result = durationConverter.convert(stringValueFromAnnotation);