Work out log volume per day instantly with clear inputs, formula shown and shareable results.
Application log volume is request rate times lines per request times line size across the day, and it grows with traffic whether or not the logs are read. Six lines per request at 420 bytes on a busy service produces hundreds of gigabytes daily, which is why structured logging at appropriate levels — and sampling of high-volume success paths — is a cost control rather than a style preference.
Log volume
application bytes = rate x lines per request x bytes per line x 86400; total = application + infrastructure; peak ingest ~ 3x average
Successful health checks, static asset requests and debug-level output in production. They typically account for the majority of volume and are almost never read.
For high-volume success paths yes, provided errors are always kept in full. Head-based sampling with error escalation is the common pattern.