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jsonl18.8 KB

Envoy-Style Proxy Access Log — JSON Lines (jsonl)

Forty service-mesh proxy access records with the fields that make mesh debugging possible: response_flags distinguishing an upstream failure from an overflow, upstream_service_time against total duration, upstream host and cluster, and a request ID for correlation.

ObservabilityLog parsingJSON parsing
Preview — first 41 linesjsonl
{"start_time":"2026-03-17T09:14:32.963Z","method":"PUT","path":"/api/catalog","protocol":"HTTP/2","response_code":200,"response_flags":"-","bytes_received":1345,"bytes_sent":50650,"duration":125,"upstream_service_time":1695,"x_forwarded_for":"203.0.113.93","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"00000000-1a2b-4c3d-8e9f-000000000000","authority":"shop.example.com","upstream_host":"192.0.2.13:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:33.186Z","method":"GET","path":"/api/checkout","protocol":"HTTP/2","response_code":200,"response_flags":"-","bytes_received":2729,"bytes_sent":60911,"duration":601,"upstream_service_time":1814,"x_forwarded_for":"203.0.113.44","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"9e3779b1-1a2b-4c3d-8e9f-000000000001","authority":"shop.example.com","upstream_host":"192.0.2.25:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:33.444Z","method":"DELETE","path":"/api/catalog","protocol":"HTTP/2","response_code":204,"response_flags":"-","bytes_received":3756,"bytes_sent":52408,"duration":535,"upstream_service_time":795,"x_forwarded_for":"203.0.113.182","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"3c6ef362-1a2b-4c3d-8e9f-000000000002","authority":"shop.example.com","upstream_host":"192.0.2.26:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:33.453Z","method":"DELETE","path":"/api/cart","protocol":"HTTP/2","response_code":301,"response_flags":"-","bytes_received":1355,"bytes_sent":53505,"duration":1109,"upstream_service_time":170,"x_forwarded_for":"203.0.113.72","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"daa66d13-1a2b-4c3d-8e9f-000000000003","authority":"shop.example.com","upstream_host":"192.0.2.12:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:33.493Z","method":"PUT","path":"/healthz","protocol":"HTTP/2","response_code":301,"response_flags":"-","bytes_received":3392,"bytes_sent":24371,"duration":306,"upstream_service_time":1981,"x_forwarded_for":"203.0.113.195","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"78dde6c4-1a2b-4c3d-8e9f-000000000004","authority":"shop.example.com","upstream_host":"192.0.2.14:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:33.648Z","method":"POST","path":"/api/cart","protocol":"HTTP/2","response_code":201,"response_flags":"-","bytes_received":517,"bytes_sent":53084,"duration":1753,"upstream_service_time":579,"x_forwarded_for":"203.0.113.191","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"17156075-1a2b-4c3d-8e9f-000000000005","authority":"shop.example.com","upstream_host":"192.0.2.12:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:33.657Z","method":"PUT","path":"/api/catalog","protocol":"HTTP/2","response_code":429,"response_flags":"URX","bytes_received":1629,"bytes_sent":15537,"duration":39,"upstream_service_time":855,"x_forwarded_for":"203.0.113.159","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"b54cda26-1a2b-4c3d-8e9f-000000000006","authority":"shop.example.com","upstream_host":"192.0.2.30:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:33.689Z","method":"POST","path":"/api/checkout","protocol":"HTTP/2","response_code":429,"response_flags":"URX","bytes_received":463,"bytes_sent":9920,"duration":2386,"upstream_service_time":1618,"x_forwarded_for":"203.0.113.51","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"538453d7-1a2b-4c3d-8e9f-000000000007","authority":"shop.example.com","upstream_host":"192.0.2.26:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:33.741Z","method":"POST","path":"/api/catalog","protocol":"HTTP/2","response_code":503,"response_flags":"UO","bytes_received":1694,"bytes_sent":36630,"duration":1444,"upstream_service_time":2072,"x_forwarded_for":"203.0.113.33","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"f1bbcd88-1a2b-4c3d-8e9f-000000000008","authority":"shop.example.com","upstream_host":"192.0.2.21:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:33.803Z","method":"GET","path":"/api/orders","protocol":"HTTP/2","response_code":204,"response_flags":"-","bytes_received":3672,"bytes_sent":30383,"duration":2237,"upstream_service_time":835,"x_forwarded_for":"203.0.113.232","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"8ff34739-1a2b-4c3d-8e9f-000000000009","authority":"shop.example.com","upstream_host":"192.0.2.26:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:34.038Z","method":"PUT","path":"/healthz","protocol":"HTTP/2","response_code":301,"response_flags":"-","bytes_received":518,"bytes_sent":49104,"duration":248,"upstream_service_time":1895,"x_forwarded_for":"203.0.113.132","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"2e2ac0ea-1a2b-4c3d-8e9f-00000000000a","authority":"shop.example.com","upstream_host":"192.0.2.23:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:34.150Z","method":"DELETE","path":"/api/catalog","protocol":"HTTP/2","response_code":500,"response_flags":"UF","bytes_received":3869,"bytes_sent":33094,"duration":1528,"upstream_service_time":1464,"x_forwarded_for":"203.0.113.60","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"cc623a9b-1a2b-4c3d-8e9f-00000000000b","authority":"shop.example.com","upstream_host":"192.0.2.12:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:34.194Z","method":"POST","path":"/api/catalog","protocol":"HTTP/2","response_code":429,"response_flags":"URX","bytes_received":2047,"bytes_sent":18987,"duration":690,"upstream_service_time":1423,"x_forwarded_for":"203.0.113.227","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"6a99b44c-1a2b-4c3d-8e9f-00000000000c","authority":"shop.example.com","upstream_host":"192.0.2.28:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:34.255Z","method":"DELETE","path":"/api/orders","protocol":"HTTP/2","response_code":200,"response_flags":"-","bytes_received":2522,"bytes_sent":4230,"duration":1292,"upstream_service_time":1311,"x_forwarded_for":"203.0.113.171","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"08d12dfd-1a2b-4c3d-8e9f-00000000000d","authority":"shop.example.com","upstream_host":"192.0.2.13:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:34.512Z","method":"GET","path":"/healthz","protocol":"HTTP/2","response_code":200,"response_flags":"-","bytes_received":1773,"bytes_sent":17948,"duration":248,"upstream_service_time":856,"x_forwarded_for":"203.0.113.118","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"a708a7ae-1a2b-4c3d-8e9f-00000000000e","authority":"shop.example.com","upstream_host":"192.0.2.12:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:34.647Z","method":"POST","path":"/api/cart","protocol":"HTTP/2","response_code":301,"response_flags":"-","bytes_received":3970,"bytes_sent":6525,"duration":139,"upstream_service_time":2056,"x_forwarded_for":"203.0.113.98","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"4540215f-1a2b-4c3d-8e9f-00000000000f","authority":"shop.example.com","upstream_host":"192.0.2.25:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:34.808Z","method":"PUT","path":"/api/orders","protocol":"HTTP/2","response_code":404,"response_flags":"-","bytes_received":590,"bytes_sent":1046,"duration":313,"upstream_service_time":610,"x_forwarded_for":"203.0.113.43","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"e3779b10-1a2b-4c3d-8e9f-000000000010","authority":"shop.example.com","upstream_host":"192.0.2.23:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:34.842Z","method":"DELETE","path":"/api/catalog","protocol":"HTTP/2","response_code":200,"response_flags":"-","bytes_received":1093,"bytes_sent":29358,"duration":1809,"upstream_service_time":197,"x_forwarded_for":"203.0.113.106","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"81af14c1-1a2b-4c3d-8e9f-000000000011","authority":"shop.example.com","upstream_host":"192.0.2.31:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:34.894Z","method":"DELETE","path":"/api/checkout","protocol":"HTTP/2","response_code":200,"response_flags":"-","bytes_received":1806,"bytes_sent":12701,"duration":1329,"upstream_service_time":1061,"x_forwarded_for":"203.0.113.60","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"1fe68e72-1a2b-4c3d-8e9f-000000000012","authority":"shop.example.com","upstream_host":"192.0.2.24:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:34.899Z","method":"PUT","path":"/api/cart","protocol":"HTTP/2","response_code":200,"response_flags":"-","bytes_received":3754,"bytes_sent":54768,"duration":1020,"upstream_service_time":2090,"x_forwarded_for":"203.0.113.215","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"be1e0823-1a2b-4c3d-8e9f-000000000013","authority":"shop.example.com","upstream_host":"192.0.2.21:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:34.994Z","method":"POST","path":"/api/catalog","protocol":"HTTP/2","response_code":500,"response_flags":"UF","bytes_received":1386,"bytes_sent":4215,"duration":660,"upstream_service_time":1308,"x_forwarded_for":"203.0.113.29","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"5c5581d4-1a2b-4c3d-8e9f-000000000014","authority":"shop.example.com","upstream_host":"192.0.2.26:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:35.155Z","method":"POST","path":"/api/catalog","protocol":"HTTP/2","response_code":503,"response_flags":"UO","bytes_received":3995,"bytes_sent":27629,"duration":1381,"upstream_service_time":1254,"x_forwarded_for":"203.0.113.226","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"fa8cfb85-1a2b-4c3d-8e9f-000000000015","authority":"shop.example.com","upstream_host":"192.0.2.17:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:35.313Z","method":"PUT","path":"/api/catalog","protocol":"HTTP/2","response_code":301,"response_flags":"-","bytes_received":3968,"bytes_sent":49964,"duration":1333,"upstream_service_time":905,"x_forwarded_for":"203.0.113.225","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"98c47536-1a2b-4c3d-8e9f-000000000016","authority":"shop.example.com","upstream_host":"192.0.2.25:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:35.341Z","method":"GET","path":"/api/catalog","protocol":"HTTP/2","response_code":301,"response_flags":"-","bytes_received":3477,"bytes_sent":3405,"duration":178,"upstream_service_time":359,"x_forwarded_for":"203.0.113.27","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"36fbeee7-1a2b-4c3d-8e9f-000000000017","authority":"shop.example.com","upstream_host":"192.0.2.25:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:35.511Z","method":"DELETE","path":"/healthz","protocol":"HTTP/2","response_code":201,"response_flags":"-","bytes_received":146,"bytes_sent":16115,"duration":647,"upstream_service_time":122,"x_forwarded_for":"203.0.113.153","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"d5336898-1a2b-4c3d-8e9f-000000000018","authority":"shop.example.com","upstream_host":"192.0.2.17:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:35.536Z","method":"DELETE","path":"/api/cart","protocol":"HTTP/2","response_code":301,"response_flags":"-","bytes_received":466,"bytes_sent":24039,"duration":449,"upstream_service_time":645,"x_forwarded_for":"203.0.113.171","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"736ae249-1a2b-4c3d-8e9f-000000000019","authority":"shop.example.com","upstream_host":"192.0.2.25:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:35.706Z","method":"GET","path":"/api/orders","protocol":"HTTP/2","response_code":200,"response_flags":"-","bytes_received":2343,"bytes_sent":3998,"duration":691,"upstream_service_time":179,"x_forwarded_for":"203.0.113.233","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"11a25bfa-1a2b-4c3d-8e9f-00000000001a","authority":"shop.example.com","upstream_host":"192.0.2.30:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:35.912Z","method":"DELETE","path":"/api/checkout","protocol":"HTTP/2","response_code":429,"response_flags":"URX","bytes_received":623,"bytes_sent":8687,"duration":2279,"upstream_service_time":1296,"x_forwarded_for":"203.0.113.45","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"afd9d5ab-1a2b-4c3d-8e9f-00000000001b","authority":"shop.example.com","upstream_host":"192.0.2.23:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:36.039Z","method":"POST","path":"/api/orders","protocol":"HTTP/2","response_code":301,"response_flags":"-","bytes_received":3868,"bytes_sent":12063,"duration":1355,"upstream_service_time":1278,"x_forwarded_for":"203.0.113.223","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"4e114f5c-1a2b-4c3d-8e9f-00000000001c","authority":"shop.example.com","upstream_host":"192.0.2.19:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:36.172Z","method":"POST","path":"/api/cart","protocol":"HTTP/2","response_code":404,"response_flags":"-","bytes_received":5,"bytes_sent":9383,"duration":755,"upstream_service_time":869,"x_forwarded_for":"203.0.113.174","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"ec48c90d-1a2b-4c3d-8e9f-00000000001d","authority":"shop.example.com","upstream_host":"192.0.2.31:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:36.375Z","method":"POST","path":"/api/catalog","protocol":"HTTP/2","response_code":503,"response_flags":"UO","bytes_received":2612,"bytes_sent":49746,"duration":612,"upstream_service_time":1916,"x_forwarded_for":"203.0.113.154","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"8a8042be-1a2b-4c3d-8e9f-00000000001e","authority":"shop.example.com","upstream_host":"192.0.2.19:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:36.623Z","method":"GET","path":"/api/orders","protocol":"HTTP/2","response_code":404,"response_flags":"-","bytes_received":1755,"bytes_sent":9002,"duration":107,"upstream_service_time":160,"x_forwarded_for":"203.0.113.57","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"28b7bc6f-1a2b-4c3d-8e9f-00000000001f","authority":"shop.example.com","upstream_host":"192.0.2.25:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:36.755Z","method":"POST","path":"/healthz","protocol":"HTTP/2","response_code":200,"response_flags":"-","bytes_received":2175,"bytes_sent":37771,"duration":910,"upstream_service_time":1244,"x_forwarded_for":"203.0.113.240","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"c6ef3620-1a2b-4c3d-8e9f-000000000020","authority":"shop.example.com","upstream_host":"192.0.2.13:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:37.008Z","method":"GET","path":"/api/checkout","protocol":"HTTP/2","response_code":200,"response_flags":"-","bytes_received":2866,"bytes_sent":9511,"duration":1888,"upstream_service_time":1918,"x_forwarded_for":"203.0.113.205","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"6526afd1-1a2b-4c3d-8e9f-000000000021","authority":"shop.example.com","upstream_host":"192.0.2.12:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:37.253Z","method":"PUT","path":"/api/orders","protocol":"HTTP/2","response_code":500,"response_flags":"UF","bytes_received":786,"bytes_sent":35696,"duration":1269,"upstream_service_time":1305,"x_forwarded_for":"203.0.113.164","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"035e2982-1a2b-4c3d-8e9f-000000000022","authority":"shop.example.com","upstream_host":"192.0.2.21:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:37.486Z","method":"DELETE","path":"/api/cart","protocol":"HTTP/2","response_code":201,"response_flags":"-","bytes_received":1085,"bytes_sent":28526,"duration":295,"upstream_service_time":1201,"x_forwarded_for":"203.0.113.154","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"a195a333-1a2b-4c3d-8e9f-000000000023","authority":"shop.example.com","upstream_host":"192.0.2.27:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:37.706Z","method":"PUT","path":"/api/checkout","protocol":"HTTP/2","response_code":404,"response_flags":"-","bytes_received":3405,"bytes_sent":46135,"duration":2172,"upstream_service_time":1118,"x_forwarded_for":"203.0.113.231","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"3fcd1ce4-1a2b-4c3d-8e9f-000000000024","authority":"shop.example.com","upstream_host":"192.0.2.30:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:37.882Z","method":"POST","path":"/healthz","protocol":"HTTP/2","response_code":204,"response_flags":"-","bytes_received":1550,"bytes_sent":8155,"duration":2192,"upstream_service_time":752,"x_forwarded_for":"203.0.113.234","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"de049695-1a2b-4c3d-8e9f-000000000025","authority":"shop.example.com","upstream_host":"192.0.2.12:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:38.121Z","method":"GET","path":"/healthz","protocol":"HTTP/2","response_code":503,"response_flags":"UO","bytes_received":3404,"bytes_sent":21989,"duration":737,"upstream_service_time":1152,"x_forwarded_for":"203.0.113.8","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"7c3c1046-1a2b-4c3d-8e9f-000000000026","authority":"shop.example.com","upstream_host":"192.0.2.14:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}
{"start_time":"2026-03-17T09:14:38.352Z","method":"GET","path":"/healthz","protocol":"HTTP/2","response_code":201,"response_flags":"-","bytes_received":1739,"bytes_sent":25041,"duration":1798,"upstream_service_time":82,"x_forwarded_for":"203.0.113.172","user_agent":"shop-mobile/4.2.0 (iOS 18.3)","request_id":"1a7389f7-1a2b-4c3d-8e9f-000000000027","authority":"shop.example.com","upstream_host":"192.0.2.17:8080","upstream_cluster":"checkout-api|v1","route_name":"checkout"}

Specifications

Lines
40
Fields Per Record
17
Has Response Flags
true
Response Flags Used
-, URX, UF, UO
Protocol
HTTP/2
Has Upstream Service Time
true
Seed
7411

Testing contract

Expected to pass
Scenario
Load the log and separate proxy-side latency from upstream latency.
Expected result
40 records parse, duration minus upstream_service_time isolates proxy overhead, and the UF, UO and URX response_flags are attributed to the upstream rather than counted as client errors.

What is a .jsonl file?

JSONL (JSON Lines) is a text format where each line is a complete, independent JSON value, allowing records to be streamed and appended without parsing the whole file. It is not itself a JSON array and each line must stand alone. It is common in logging, machine learning datasets, and data pipelines.

How to use this file

Use an example JSONL to test line-by-line streaming parsers, append-and-resume ingestion, and batch pipelines that process one record per line.

How to use this file for testing

“Envoy-Style Proxy Access Log — JSON Lines (jsonl)” is a deterministic Novus Examples fixture for Observability, Log parsing, JSON parsing. Structured and plain-text telemetry with known timestamps, levels, request identifiers, and error states for testing log ingestion, correlation, dashboards, and alert pipelines.

Documented properties for this file: seed 7411. Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.

Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.

Telemetry fixtures use fixed trace IDs, span IDs, and timestamps so ingestion is reproducible run to run. Point your collector, parser, or query layer at the file and assert the documented span tree, metric families, or severity mix; service and host names are invented.

Code examples

import json

with open("envoy-access.jsonl") as f:
    rows = [json.loads(line) for line in f]
print(len(rows), rows[0])

Related files

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