Since everybody seems to be hating on jenkins so much, I'll speak up. IMO jenkins is one of the most valuable tools at any startup and every good engineer uses either jenkins or something very similar.
There's no comparison between managed/logged/permissioned/distributed jobs that jenkins provides for free vs building an overwrought service or an insufficient crontab. However it's a power-tool and I think a lot of people go in expecting something dead-simple and pretty and are put off by something that they need to invest in learning.
Just for example, in 2 days I built an uptime checker that ran every 60-seconds via jenkins and triggered slack alarms/sms on problem, and it just worked (< 2 days total maintenance), for years. An equivalent service (Pingdom) quoted 10k a year.
There's no comparison between managed/logged/permissioned/distributed jobs that jenkins provides for free vs building an overwrought service or an insufficient crontab. However it's a power-tool and I think a lot of people go in expecting something dead-simple and pretty and are put off by something that they need to invest in learning.
Just for example, in 2 days I built an uptime checker that ran every 60-seconds via jenkins and triggered slack alarms/sms on problem, and it just worked (< 2 days total maintenance), for years. An equivalent service (Pingdom) quoted 10k a year.