Do I need a scheduler for website monitoring jobs?

Usually, yes—if you want website monitoring to run automatically and repeatedly, you need some kind of scheduler.

Why you need one

A scheduler handles:

• When to run checks
• How often to run them
• Retries / backoff if a check fails
• Staggering jobs so you don’t hit all sites at once
• Persistence so jobs survive restarts

Common options

• Cron / systemd timers: simple periodic checks
• Application-level scheduler: if your app manages job logic itself
• Queue + worker + delayed jobs: better for scaling and retries
• Managed schedulers: cloud-native options like AWS EventBridge, GCP Cloud Scheduler, etc.

When you might not need one

You may not need a separate scheduler if:

• Monitoring is manual / on-demand
• Your checks are triggered by another system
• You already have a platform scheduler built in

Rule of thumb

• Small/simple setup: cron is enough
• Many sites / retries / alerting / scaling: use a queue-based or managed scheduler

If you tell me your stack (Python, Node, Docker, cloud provider, number of sites, check frequency), I can suggest the best approach.