I want to trigger a lambda function at the time specified by the user at run time and perform specific action like sending email or text. I know i can run a cron job which runs every minute to match the user specified time and send the mail or sms but that will execute the function every single minute which i don’t want. Can someone suggest me the better way of doing this using scheduling.
You could schedule a Cloud Watch Event via the API
http://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/CloudWatchEvents.html#putRule-property
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