Scheduling Scraping Jobs

Real scrapers run automatically: - every hour - every day - every week

Manual runs are not practical.

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Option 1: cron (Linux)

Run every day at 2 AM:

```bash 0 2 * * * /usr/bin/python3 /path/scraper.py >> scraper.log 2>&1 ```

Meaning: minute hour day month weekday

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Option 2: Python schedule library

```python import schedule import time

def job(): print("Running scraper...")

schedule.every().day.at("02:00").do(job)

while True: schedule.run_pending() time.sleep(60) ```

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Why scheduling matters - keeps data fresh - no human needed - works 24/7

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Graph: scheduler flow

```mermaid flowchart LR A[Clock] --> B[Scheduler] B --> C[Run Scraper] C --> D[Store in DB] ```

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Remember - cron is reliable for servers - Python scheduler good for apps - Always log scheduled runs