Crawler Timing Discrepancy Analysis

Why is your crawler showing 10 minutes when configured for 4 hours?

Understanding the Timing Issue

When your crawler is set to run every 4 hours but actually runs every 10 minutes, there are several potential causes for this discrepancy.

Expected Interval
4 hours
(240 minutes)
Actual Interval
10 minutes
(1/24 of expected)

Common Causes

1. Configuration Override

Another configuration file or setting might be overriding your intended schedule.

2. Time Unit Misinterpretation

The crawler might be interpreting your time setting in different units (minutes vs. hours).

3. Multiple Configuration Points

You might have set the crawl interval in multiple places, with the shorter interval taking precedence.

4. Development vs. Production Settings

Your development environment might have different settings than production.

5. Minimum Interval Enforcement

Some systems enforce a minimum crawl interval regardless of your settings.

6. Caching Issues

Old configuration might be cached and not reflecting your recent changes.

Crawler Interval Visualization

Expected vs. Actual Execution Frequency

0h
1h
2h
3h
4h

The crawler is executing at each green mark, much more frequently than expected

Troubleshooting Steps

1. Check Configuration Files

Review all configuration files for conflicting settings:

# Example configuration
crawler.interval=240m # Check for similar settings

2. Verify Time Format

Ensure you're using the correct time format for your crawler:

# Correct format for 4 hours
interval: 240m
interval: 4h
interval: 14400s

3. Search for Overrides

Look for code that might override the default interval:

// Check for setInterval or similar functions
setInterval(crawlFunction, 600000); // 10 minutes in milliseconds

4. Check Environment Variables

Environment variables might be overriding your config file settings:

# Check environment variables
echo $CRAWLER_INTERVAL
printenv | grep -i crawl

5. Clear Caches

Clear any configuration caches that might be serving old settings:

# Example cache clearing commands
service crawler restart
systemctl reload crawler.service
rm -rf /var/cache/crawler/*

Quick Solution

Try explicitly setting the interval in minutes instead of hours to avoid parsing ambiguity:

# Use minutes instead of hours for clarity
crawler.interval.minutes=240

Documentation Check

Consult your crawler's documentation for specific time format requirements: