Exponential Backoff Is Not Always the Best Retry Strategy, Developers Find

Exponential backoff is a retry technique where wait times between attempts double progressively, helping prevent 'thundering herd' problems when many clients simultaneously hit an overloaded server. However, a technical analysis of a real codebase shows that fixed-interval retries were deliberately chosen in several scenarios instead. In one case, an HTTP status checker used a single flat 3-second retry because the function is called dozens of times per maintenance run, making unpredictable cumulative delays a practical concern. The key distinction is that exponential backoff only provides meaningful benefit when multiple independent clients are competing for the same shared resource. Where that condition does not apply, fixed intervals offer simpler, more predictable behavior without sacrificing reliability.