Log files · 152 KB
JSON (structured) log, 1,000 lines
One JSON object per line with timestamp, level, service, message, trace ID and duration — the format log shippers like Datadog and Loki ingest.
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{"ts": "2026-01-15T09:30:00.879Z", "level": "info", "service": "api", "msg": "payment declined", "trace_id": "e3ef82ba0da68fb2", "duration_ms": 757}
{"ts": "2026-01-15T09:30:01.306Z", "level": "warn", "service": "worker", "msg": "retrying request", "trace_id": "13d66ec253cdc30f", "duration_ms": 501}
{"ts": "2026-01-15T09:30:01.863Z", "level": "info", "service": "billing", "msg": "request completed", "trace_id": "2968aadfb3f419f9", "duration_ms": 1275}
{"ts": "2026-01-15T09:30:02.476Z", "level": "error", "service": "api", "msg": "request completed", "trace_id": "0079970955c33a4e", "duration_ms": 431, "error": {"type": "TimeoutError", "message": "upstream request timed out after 1500ms"}}
{"ts": "2026-01-15T09:30:02.785Z", "level": "debug", "service": "worker", "msg": "payment declined", "trace_id": "71f97f1042dd49e0", "duration_ms": 1220}
{"ts": "2026-01-15T09:30:03.394Z", "level": "info", "service": "api", "msg": "payment declined", "trace_id": "77d9033737d32ce8", "duration_ms": 305}
{"ts": "2026-01-15T09:30:03.612Z", "level": "info", "service": "billing", "msg": "retrying request", "trace_id": "db206b97b40301b4", "duration_ms": 922}
{"ts": "2026-01-15T09:30:04.288Z", "level": "info", "service": "billing", "msg": "retrying request", "trace_id": "cdc94e5843a702d2", "duration_ms": 842}
{"ts": "2026-01-15T09:30:04.659Z", "level": "debug", "service": "api", "msg": "request completed", "trace_id": "0a3187d432afd312", "duration_ms": 254}
{"ts": "2026-01-15T09:30:05.548Z", "level": "info", "service": "worker", "msg": "job processed", "trace_id": "3083b6d6b9d70e03", "duration_ms": 480}
{"ts": "2026-01-15T09:30:06.015Z", "level": "warn", "service": "api", "msg": "request completed", "trace_id": "3cb5d79794b6dabd", "duration_ms": 1179}
{"ts": "2026-01-15T09:30:06.095Z", "level": "info", "service": "worker", "msg": "request completed", "trace_id": "9e14dfc4c1f39ad6", "duration_ms": 887}
{"ts": "2026-01-15T09:30:06.772Z", "level": "info", "service": "api", "msg": "retrying request", "trace_id": "0105d007bffe513f", "duration_ms": 146}
{"ts": "2026-01-15T09:30:07.537Z", "level": "debug", "service": "worker", "msg": "retrying request", "trace_id": "f05d7382ea00afb2", "duration_ms": 288}
{"ts": "2026-01-15T09:30:07.640Z", "level": "warn", "service": "worker", "msg": "payment declined", "trace_id": "ab948aff6e90364f", "duration_ms": 898}File details
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curl -L -o app-json.log https://files.samplefiles.com/data/log/app-json.logwget https://files.samplefiles.com/data/log/app-json.loghttps://files.samplefiles.com/data/log/app-json.logprintf '%s %s\n' 9acd02347048bf4c1928b97fce91457e9ec98a76fbc3913374d2df8cade5d58b app-json.log | shasum -a 256 -cOr check the download in your browser with the checksum calculator.
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