I want to do something in node at, say, midnight each day.

I see a lot of stuff pointing me to node-cron, and I see this article configuring a docker container to execute a script per a crontab

I want to 1. not use any external packages and 2. keep the script being executed inside the server code itself (i.e. I couldn't have the docker container execute some other file on a schedule)

The use case is I want to update a cache on the server every day around midnight, and then, at more frequent intervals, use that cache for various things.

CodePudding user response：

You can use setInterval to run the code every hour and check if it's around midnight

setInterval(() => {
  if (new Date().getHours() === 0) {
    // do stuff
  }
}, 1000 * 60 * 60 * 60)