@rafalzawadzki i recently watched some system design concepts (first time for me in 10 years) but it said that you should put your non-critical tasks in a queue.

so i thought i should put my sending email task in a queue after getting payment. is that a correct idea?

note: i dropped bullmq/trigger both from my project about 2-3 days ago as i thought it would be overkill for my small project.

i'm curious if most system design concepts are used/required in only big apps with lots of requests/scale/concurrency?

you could use a queue if you had thousands of emails to send - for example an email notification on a social network, where one action notifies many users at once. Don’t overcomplicate your small app :)

got it, thanks. i won't mark it as an answer as i'd still like the original question to be answered.