Logging In Loop (ARCH6164)

Key ruby.logging.logging-in-loop · Severity info · Category logging

Log statements inside a loop body can flood log sinks with thousands of lines on large collections. This buries real signal in noise.

Incorrect

orders.each do |order|
  Rails.logger.info("Processing order", order_id: order.id)
  process(order)
end

Correct

orders.each { |order| process(order) }
Rails.logger.info("Processed orders", count: orders.size)

Fix

Summarize log calls outside the loop, or log only failures inside it.