GraceFullShutdownExample.kt

    @Bean
    @Suppress("unused")
    fun servletWebServerFactory(applicationConfig: ApplicationConfig): ServletWebServerFactory {
        val serverFactory = TomcatServletWebServerFactory()
        serverFactory.addContextCustomizers(TomcatContextCustomizer {
            if (it is StandardContext) {
                val context = it
                log.info("Current context unloadDelay: {}", context.unloadDelay)
                context.unloadDelay = Duration.ofMinutes(2).toMillis()
                log.info("Updated context unloadDelay: {}", context.unloadDelay)
            }
        })
        return serverFactory
    }