Callbacks & Callback Hell

What advanced callback pattern is shown here?

function retry(operation, retries, delay, callback) {
  operation((err, result) => {
    if (!err || retries === 0) {
      return callback(err, result);
    }
    setTimeout(() => {
      retry(operation, retries - 1, delay, callback);
    }, delay);
  });
}

Error handling
Retry mechanism
This code shows a retry mechanism using callbacks. Important aspects: 1) Automatically retries failed operations a specified number of times, 2) Implements delay between retries to prevent overwhelming resources, 3) Uses recursion to manage retry attempts, 4) Properly propagates final error or success result, 5) Common pattern for handling transient failures in network operations or other unreliable processes.
Recursive callback
Timeout pattern

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