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Actually there are few options how potentially do it even more cheaper - for example switch to arm-based lambdas or optimize execution time. Actually I don't have yet any statistics how much it could cost for me (I use it for about 50 Telegram channels and my RSS client check for updates in the feed every hour), but looks like I will not even rich AWS free tear limit in 1 million free executions.

I mean if you're using it for personal use, then you'll almost certainly not even approach the end of the free tier.

Free tier is 1 year or so? At least that is what Amazon tells me.

Some of it is a year, some of it like Lambda invocations is perpetual.

Lambda free tier is pretty generous. If it's not free tier the pricing is also very small relative to running a server to do this

Alternatives:

Google Cloud Functions

CloudFlare workers

Yahoo Pipes

Wait what year is it

Thank you for triggering the long-dormant neuron in my brain that remembers working with Yahoo Pipes.

i remember evangelising yahoo pipes in college :)