A system where users want to get alert as soon as a price of a product gets changed as per there given percentage change(+/-) from a base value of there choice. Now the problem is that price of the product is updated every hour, and keeping in mind that there might 1000+ users for now. How the system should be designed and which technology should be used to built a scalable system.
Thanks for giving your time. :)
Mahesh G
Assuming you already have a way to send alerts to users and your problem is on server side, did you try any messaging mechanisms like RabbitMQ?
Workflow might look like: