Structured logging means logs are emitted as machine-readable fields (e.g., JSON) like `level`, `message`, `requestId`, `userId`. It’s useful because you can reliably search, filter, and correlate logs across many code paths without parsing random text.
Expanding on the short answer — what usually matters in practice:
A tiny example (an explanation template):
// Example: discuss trade-offs for "structured-logging:-what-is-it-and-why-is-it-use"
function explain() {
// Start from the core idea:
// Structured logging means logs are emitted as machine-readable fields (e.g., JSON) like `le
}