Blog
Notes on cron and on scheduling jobs across machines.
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Cron Schedule Calculator: Build an Expression and See When It Runs
An interactive cron schedule calculator. Edit the five fields, see the expression in plain English, and check the next five run times before you save it.
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Scheduled AI Agent Failures: What Breaks Differently From a Cron Job
A scheduled agent run fails in ways a shell script doesn't: it can "succeed" and still be wrong. A runbook for the failure modes specific to running agents on a timer.
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AI Agents Need Scheduling Too, and Most Agent Tooling Skips It
Agents can plan, call tools, and act on their own, but little tooling gives them a reliable way to run later. This post covers why scheduling gets left out of most agent stacks.
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Dead Man's Snitch Alternative for Teams That Outgrew Ping-and-Pray
Dead Man's Snitch is a simple cron monitor: a URL you curl, and an alert if you don't. Here's when that's exactly right, and when you need something that can also fix the job.
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How Infra Teams Actually Schedule Work in 2026
What systemd timers and Kubernetes CronJobs fixed compared with cron, what they left alone, and the operational problem all of them share.
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AI-Generated Cron Schedules: How Natural-Language Scheduling Works
What happens when a natural-language scheduling request becomes a cron expression: where LLMs are reliable, where they fail, and why validation matters more than generation.
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Cronitor Alternatives in 2026: What Each One Does Differently
A comparison of Cronitor alternatives (Healthchecks.io, Dead Man's Snitch, Sentry Crons, cron-job.org, Better Stack, and more), with pricing and who should pick which.
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Healthchecks.io Alternative for Teams That Want to Fix Jobs, Not Only Watch Them
Healthchecks.io is a good open-source heartbeat monitor. Here's when it's the right call, and when you need a control plane that can edit jobs too.
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Why Monitoring-Only Cron Tools Are a Trap (You Still Have to SSH In)
Heartbeat monitoring shortens time-to-detection, not time-to-fix. The mechanical gap between knowing a job failed and actually fixing it, and what closes it.
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How to Manage Cron Jobs Across Multiple Servers
Five approaches to managing cron across a fleet of servers (SSH loops, config management, central schedulers, systemd timers, and monitoring) and when each one is the right answer.
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The Cron Job Failure Runbook: What to Check When a Scheduled Task Silently Dies
An ordered diagnostic runbook for cron jobs that stop running without an error: the cron daemon, the crontab, logging, environment, permissions, locking, resource limits, and clock drift.
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7 Crontab Mistakes That Take Down Production
Seven crontab failure modes, each with the symptom, the root cause, and the fix, using real crontab lines and real shell.
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Cron Syntax Cheat Sheet: Fields, Shorthand, and Edge Cases
A reference for cron schedule syntax: the five fields, the shorthand strings, and the edge cases that trip up experienced engineers.