Tutorials, industry analysis, and best practices for ecommerce data extraction, API integration, and competitive intelligence.
Net::HTTP.new(...).max_retries defaults to 1, so a GET that times out while the Amazon API is still answering gets silently re-sent once by Ruby itself, before your own retry code runs - and every send to a billed endpoint is billed. Here is a local test that proves it (2 requests for 1 call), the stdlib source line that causes it, and the one-line fix.
Get Amazon product data in Ruby with nothing but the standard library: a Net::HTTP client for product lookup and keyword search, a retry policy that never pays twice for the same miss, a thread pool for bulk lookups, and how to call it from Rails.
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