Cron expression for every minute

The every-minute schedule is the highest-frequency cron pattern available, since standard cron only supports minute-level granularity. It's commonly used during development and debugging to verify that a cron daemon or scheduler is working correctly before switching to a production schedule.

In production, every-minute jobs typically handle lightweight, time-sensitive operations: checking a message queue for new items, polling an external API for webhook-like behaviour when webhooks aren't available, updating a real-time dashboard cache, or rotating short-lived session tokens.

Be cautious with this schedule on resource-constrained systems. If the job takes longer than 60 seconds to complete, a new instance will start before the previous one finishes — leading to overlapping executions. Most implementations guard against this with a lock file or a "skip if already running" check at the start of the script.