Why Your Retry Logic Is Lying to You

Exponential backoff is not a personality trait. Most retry logic just hides a design problem with more patience.

technicaldistributed-systemsreliability2026.07.19

The possum, in its investigating state — PROCESSLET ME LOOK

IN PLAIN ENGLISH

The point of a retry

A retry is useful when the dependency is likely to recover. It becomes a problem when the retry policy keeps calling a system that is failing for a structural reason.

REFERENCE IMPLEMENTATION

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The retry needs an exit

for (let attempt = 0; attempt < 3; attempt += 1) {
  try {
    return await dependency.request();
  } catch (error) {
    if (!isTransient(error)) throw error;
    await delay(250 * 2 ** attempt);
  }
}

throw new RetryExhaustedError();

The stop condition is the important part. Without one, this is just a slow way to fail.

INTERACTIVE REFERENCE

Retry Logic Lab

attempt#1

backoff0ms

One retry can be useful. The question is what happens next.

Retry logic is supposed to buy you time while a transient problem resolves itself. Half the time, it's actually buying the downstream system time to fail somewhere else instead.

The tell

If your retry count is set to a number nobody can explain, that number is folklore, not engineering.

What actually helped

Circuit breakers, not more retries. Retries treat the symptom. Breakers treat the blast radius.