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Repository Details
Problem: • An application for billing 10,000 users over a given billing API (owned by a third party e.g. Telco/Bank). • The billing API takes 1.6secs to process and respond to each request • The details of the users to bill is stored in a Database with fields; id, username, mobile_number and amount_to_bill Requirements: Write or describe a simple PHP code that will be able bill all the 10,000 users within 1hr. Also suggest an approach to scale the above if you need to bill 100,000 users within 4.5hrs
