CODEWITHSUNDEEP
amazon-web-serviceseventsscheduled-tasksaws-lambda
Kamal Gadepalli
Kamal Gadepalli

Reputation: 205

AWS lambda functions future scheduling

I have a requirement to send email and SMS based on some conditions to users, i want to publish a message to AWS (Any service) with time and message at the time of user creation, is there any way to call a lambda function based on my scheduled time along with message?

Upvotes: 0

Views: 1133

Answers (2)

Tofig Hasanov
Tofig Hasanov

Reputation: 3709

You can use CloudWatch scheduled events for this. It allows you to specify cron expression. The event itself can trigger your lambda that then checks any preconditions you might have and then sends notification via SNS or some other way.

Upvotes: 0

E.J. Brennan
E.J. Brennan

Reputation: 46879

Sounds like what you are saying is that you want to store a message and a 'time to send' someplace and then when that time comes, send out that message via SMS and/or SES, correct?

Lots of ways to accomplish it, but one way would be to store your messages into the database of your choice (perhaps dynamodb), and have a lambda function that gets called periodically (every minute or whatever frequency you determine) to find messages that are ready to send.

In this scenario you could use cloudwatch events to call the lambda function at the interval you decide (but no more frequent than once per minute).

Possible enhancement (especially if you have a huge number events) would be to have the lambda function not actually process the sms/ses sends - but just find those messages that are ready to send - and post those messages to an SNS topic and have a different lambda function that takes care of the actual processing (sending) of those messages.

Upvotes: 1

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