Run Daily Tasks at 5 PM Standard Cron | CronBase

const cron = require('node-cron');
const { exec } = require('child_process');

console.log('Registering daily 5 PM scheduler...');

// Schedule task to run at 17:00 every day
cron.schedule('0 17 * * *', async () => {
  const timestamp = new Date().toISOString();
  console.log(`[${timestamp}] Initiating scheduled daily processing...`);
  
  try {
    // Simulate task processing with proper error handling
    await performDailyMaintenance();
    console.log(`[${timestamp}] Daily maintenance successfully completed.`);
  } catch (error) {
    console.error(`[${timestamp}] CRITICAL: Scheduled task failed:`, error);
    // Integrate with your alerting system (e.g., PagerDuty, Sentry)
  }
}, {
  scheduled: true,
  timezone: "America/New_York" // Explicitly set timezone to avoid DST issues
});

async function performDailyMaintenance() {
  return new Promise((resolve) => setTimeout(resolve, 5000));
}

#!/usr/bin/env bash
# Production-ready wrapper for daily 5 PM cron job execution
# Prevents overlapping runs using flock and logs output with timestamps

set -euo pipefail

LOCKFILE="/var/lock/daily-eod-task.lock"
LOGFILE="/var/log/daily-eod-task.log"

# Redirect stdout and stderr to log file
exec >> "$LOGFILE" 2>&1

echo "[$(date -Iseconds)] Starting daily EOD execution..."

# Acquire an exclusive non-blocking lock to prevent overlapping runs
exec 9>"$LOCKFILE"
if ! flock -n 9; then
    echo "[$(date -Iseconds)] ERROR: Another instance of this job is already running!" >&2
    exit 1
fi

# Actual business logic execution
/usr/local/bin/run-eod-processing.sh

echo "[$(date -Iseconds)] Execution successfully completed."

import logging
from datetime import datetime
from apscheduler.schedulers.blocking import BlockingScheduler
from apscheduler.triggers.cron import CronTrigger

logging.basicConfig(level=logging.INFO, format='%(asctime)s [%(levelname)s] %(message)s')
logger = logging.getLogger(__name__)

def execute_daily_sync():
    logger.info("Starting daily synchronization and cleanup...")
    try:
        # Business logic goes here
        pass
        logger.info("Daily sync completed successfully.")
    except Exception as e:
        logger.error(f"Execution failed: {str(e)}", exc_info=True)

if __name__ == "__main__":
    scheduler = BlockingScheduler()
    # Standard cron 17:00 schedule with an explicit timezone
    trigger = CronTrigger(hour=17, minute=0, timezone="America/New_York")
    scheduler.add_job(execute_daily_sync, trigger=trigger, id="daily_sync")
    
    logger.info("Scheduler started. Job registered for daily run at 17:00.")
    try:
        scheduler.start()
    except (KeyboardInterrupt, SystemExit):
        logger.info("Scheduler stopped.")

package main

import (
	"log"
	"os"
	"os/signal"
	"syscall"
	"time"

	"github.com/robfig/cron/v3"
)

func main() {
	logger := log.New(os.Stdout, "[CRON] ", log.LstdFlags|log.Lshortfile)
	
	// Load the target timezone for daily run
	location, err := time.LoadLocation("America/New_York")
	if err != nil {
		logger.Fatalf("Failed to load timezone: %v", err)
	}

	c := cron.New(cron.WithLocation(location))
	
	_, err = c.AddFunc("0 17 * * *", func() {
		logger.Println("Executing scheduled daily task...")
		defer logger.Println("Daily task execution finished.")
		// Implement business logic with panic recovery here
	})
	if err != nil {
		logger.Fatalf("Error scheduling job: %v", err)
	}

	c.Start()
	logger.Println("Scheduler started. Task running daily at 17:00 New York time.")

	// Keep application running until interrupted
	sig := make(chan os.Signal, 1)
	signal.Notify(sig, syscall.SIGINT, syscall.SIGTERM)
	<-sig
	
	logger.Println("Shutting down scheduler...")
	c.Stop()
}

package com.cronbase.scheduler;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;
import java.time.Instant;

@Component
public class DailyMaintenanceScheduler {

    private static final Logger logger = LoggerFactory.getLogger(DailyMaintenanceScheduler.class);

    // Spring Cron uses: second minute hour day month weekday
    // "0 0 17 * * *" translates to 17:00:00 daily
    @Scheduled(cron = "0 0 17 * * *", zone = "America/New_York")
    public void runDailyTask() {
        logger.info("Starting scheduled 5 PM daily processing run at: {}", Instant.now());
        try {
            performEODProcessing();
            logger.info("Scheduled daily processing run completed successfully.");
        } catch (Exception e) {
            logger.error("CRITICAL: Daily processing failed during execution!", e);
            // Implement alerting mechanisms here
        }
    }

    private void performEODProcessing() throws InterruptedException {
        // Simulate database cleanup/reconciliation logic
        Thread.sleep(10000);
    }
}

apiVersion: batch/v1
kind: CronJob
metadata:
  name: daily-eod-processing
  namespace: production
spec:
  schedule: "0 17 * * *"
  timeZone: "America/New_York" # Supported in Kubernetes v1.27+
  concurrencyPolicy: Forbid
  successfulJobsHistoryLimit: 3
  failedJobsHistoryLimit: 5
  jobTemplate:
    spec:
      template:
        spec:
          containers:
          - name: processing-engine
            image: registry.example.com/eod-processor:v1.2.0
            imagePullPolicy: IfNotPresent
            resources:
              requests:
                cpu: "500m"
                memory: "512Mi"
              limits:
                cpu: "1000m"
                memory: "1Gi"
          restartPolicy: OnFailure