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LogTape","\u002Fcompare\u002Flogtape","9.compare\u002F3.logtape",{"title":605,"path":606,"stem":607,"icon":577},"evlog vs Winston: formats and request events","\u002Fcompare\u002Fwinston","9.compare\u002F4.winston",{"title":609,"path":610,"stem":611,"icon":577},"evlog vs Consola: reporters and request context","\u002Fcompare\u002Fconsola","9.compare\u002F5.consola",{"id":613,"title":314,"body":614,"description":1685,"extension":1686,"links":1687,"meta":1688,"navigation":1689,"path":315,"seo":1690,"stem":316,"__hash__":1691},"docs\u002F4.integrate\u002Fframeworks\u002F16.aws-lambda.md",{"type":615,"value":616,"toc":1673},"minimark",[617,648,688,697,708,723,737,740,745,816,820,1329,1338,1345,1363,1488,1501,1505,1523,1629,1633,1669],[618,619,620,621,625,626,630,631,635,636,639,640,643,644,647],"p",{},"AWS Lambda has ",[622,623,624],"strong",{},"no HTTP middleware lifecycle"," like Nuxt or Express, so evlog behaves like ",[627,628,629],"a",{"href":301},"standalone TypeScript",": call ",[632,633,634],"code",{},"initLogger()"," once, create a logger ",[622,637,638],{},"per invocation"," (or per SQS message) with ",[632,641,642],{},"createLogger()",", then call ",[632,645,646],{},"log.emit()"," when work finishes.",[649,650,653,656,675],"prompt",{":actions":651,"description":652,"icon":317},"[\"copy\",\"cursor\",\"claude\"]","Set up evlog in my AWS Lambda function",[618,654,655],{},"Set up evlog in an AWS Lambda function (e.g. SQS consumer).",[657,658,659,663,666,669,672],"ul",{},[660,661,662],"li",{},"Install evlog: pnpm add evlog",[660,664,665],{},"Call initLogger({ env: { service: 'my-fn' } }) once at module load (cold start)",[660,667,668],{},"In the handler, create a new createLogger({ messageId, ... }) per invocation or per message",[660,670,671],{},"Use log.set() to accumulate context; call log.emit() when done",[660,673,674],{},"Avoid a single module-level logger instance reused across invocations (Lambda reuses runtimes)",[618,676,677,678,683,684],{},"Docs: ",[627,679,680],{"href":680,"rel":681},"https:\u002F\u002Fwww.evlog.dev\u002Fintegrate\u002Fframeworks\u002Faws-lambda",[682],"nofollow","\nAdapters: ",[627,685,686],{"href":686,"rel":687},"https:\u002F\u002Fwww.evlog.dev\u002Fintegrate\u002Fadapters\u002Foverview",[682],[689,690,692,693,696],"h2",{"id":691},"why-not-one-global-createlogger","Why not one global ",[632,694,695],{},"createLogger","?",[618,698,699,700,703,704,707],{},"Lambda ",[622,701,702],{},"execution environments are reused",": the same process can handle many invocations in sequence. Module-level variables persist, so ",[622,705,706],{},"one shared logger instance"," can leak fields from a previous invocation into the next.",[618,709,710,713,714,716,717,722],{},[622,711,712],{},"Do this:"," ",[632,715,634],{}," once at the top level (configuration only), and ",[622,718,719,721],{},[632,720,642],{}," inside the handler"," (or inside the loop over SQS records) for each unit of work.",[618,724,725,728,729,732,733,736],{},[622,726,727],{},"Dependency injection"," (passing ",[632,730,731],{},"log"," into functions) is optional, it helps tests and clarity, but what matters is ",[622,734,735],{},"one logger per invocation",", not whether you use DI.",[689,738,25],{"id":739},"quick-start",[741,742,744],"h3",{"id":743},"_1-install","1. Install",[746,747,748,773,787,801],"code-group",{},[749,750,756],"pre",{"className":751,"code":752,"filename":753,"language":754,"meta":755,"style":755},"language-bash shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","pnpm add evlog\n","pnpm","bash","",[632,757,758],{"__ignoreMap":755},[759,760,763,766,770],"span",{"class":761,"line":762},"line",1,[759,764,753],{"class":765},"sBMFI",[759,767,769],{"class":768},"sfazB"," add",[759,771,772],{"class":768}," evlog\n",[749,774,777],{"className":751,"code":775,"filename":776,"language":754,"meta":755,"style":755},"bun add evlog\n","bun",[632,778,779],{"__ignoreMap":755},[759,780,781,783,785],{"class":761,"line":762},[759,782,776],{"class":765},[759,784,769],{"class":768},[759,786,772],{"class":768},[749,788,791],{"className":751,"code":789,"filename":790,"language":754,"meta":755,"style":755},"yarn add evlog\n","yarn",[632,792,793],{"__ignoreMap":755},[759,794,795,797,799],{"class":761,"line":762},[759,796,790],{"class":765},[759,798,769],{"class":768},[759,800,772],{"class":768},[749,802,805],{"className":751,"code":803,"filename":804,"language":754,"meta":755,"style":755},"npm install evlog\n","npm",[632,806,807],{"__ignoreMap":755},[759,808,809,811,814],{"class":761,"line":762},[759,810,804],{"class":765},[759,812,813],{"class":768}," install",[759,815,772],{"class":768},[741,817,819],{"id":818},"_2-initialize-once-log-per-invocation","2. Initialize once, log per invocation",[749,821,826],{"className":822,"code":823,"filename":824,"language":825,"meta":755,"style":755},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import type { SQSEvent } from 'aws-lambda'\nimport { initLogger, createLogger } from 'evlog'\n\ninitLogger({\n  env: { service: 'sqs-consumer', environment: process.env.NODE_ENV },\n})\n\nexport async function handler(event: SQSEvent) {\n  for (const record of event.Records) {\n    const log = createLogger({\n      messageId: record.messageId,\n      approximateReceiveCount: record.attributes?.ApproximateReceiveCount,\n    })\n\n    try {\n      log.set({ queue: { name: record.eventSourceARN } })\n      \u002F\u002F … parse record.body and process the message\n      log.set({ status: 'ok' })\n    } catch (error) {\n      log.error(error instanceof Error ? error : new Error(String(error)))\n      log.set({ status: 'error' })\n      throw error\n    } finally {\n      log.emit()\n    }\n  }\n}\n","src\u002Fhandler.ts","typescript",[632,827,828,860,887,894,907,956,965,970,1002,1033,1051,1069,1092,1100,1105,1113,1154,1161,1190,1207,1252,1279,1288,1298,1311,1317,1323],{"__ignoreMap":755},[759,829,830,834,837,841,845,848,851,854,857],{"class":761,"line":762},[759,831,833],{"class":832},"s7zQu","import",[759,835,836],{"class":832}," type",[759,838,840],{"class":839},"sMK4o"," {",[759,842,844],{"class":843},"sTEyZ"," SQSEvent",[759,846,847],{"class":839}," }",[759,849,850],{"class":832}," from",[759,852,853],{"class":839}," '",[759,855,856],{"class":768},"aws-lambda",[759,858,859],{"class":839},"'\n",[759,861,863,865,867,870,873,876,878,880,882,885],{"class":761,"line":862},2,[759,864,833],{"class":832},[759,866,840],{"class":839},[759,868,869],{"class":843}," initLogger",[759,871,872],{"class":839},",",[759,874,875],{"class":843}," createLogger",[759,877,847],{"class":839},[759,879,850],{"class":832},[759,881,853],{"class":839},[759,883,884],{"class":768},"evlog",[759,886,859],{"class":839},[759,888,890],{"class":761,"line":889},3,[759,891,893],{"emptyLinePlaceholder":892},true,"\n",[759,895,897,901,904],{"class":761,"line":896},4,[759,898,900],{"class":899},"s2Zo4","initLogger",[759,902,903],{"class":843},"(",[759,905,906],{"class":839},"{\n",[759,908,910,914,917,919,922,924,926,929,932,934,937,939,942,945,948,950,953],{"class":761,"line":909},5,[759,911,913],{"class":912},"swJcz","  env",[759,915,916],{"class":839},":",[759,918,840],{"class":839},[759,920,921],{"class":912}," service",[759,923,916],{"class":839},[759,925,853],{"class":839},[759,927,928],{"class":768},"sqs-consumer",[759,930,931],{"class":839},"'",[759,933,872],{"class":839},[759,935,936],{"class":912}," environment",[759,938,916],{"class":839},[759,940,941],{"class":843}," process",[759,943,944],{"class":839},".",[759,946,947],{"class":843},"env",[759,949,944],{"class":839},[759,951,952],{"class":843},"NODE_ENV ",[759,954,955],{"class":839},"},\n",[759,957,959,962],{"class":761,"line":958},6,[759,960,961],{"class":839},"}",[759,963,964],{"class":843},")\n",[759,966,968],{"class":761,"line":967},7,[759,969,893],{"emptyLinePlaceholder":892},[759,971,973,976,980,983,986,988,992,994,996,999],{"class":761,"line":972},8,[759,974,975],{"class":832},"export",[759,977,979],{"class":978},"spNyl"," async",[759,981,982],{"class":978}," function",[759,984,985],{"class":899}," handler",[759,987,903],{"class":839},[759,989,991],{"class":990},"sHdIc","event",[759,993,916],{"class":839},[759,995,844],{"class":765},[759,997,998],{"class":839},")",[759,1000,1001],{"class":839}," {\n",[759,1003,1005,1008,1011,1014,1017,1020,1023,1025,1028,1031],{"class":761,"line":1004},9,[759,1006,1007],{"class":832},"  for",[759,1009,1010],{"class":912}," (",[759,1012,1013],{"class":978},"const",[759,1015,1016],{"class":843}," record",[759,1018,1019],{"class":839}," of",[759,1021,1022],{"class":843}," event",[759,1024,944],{"class":839},[759,1026,1027],{"class":843},"Records",[759,1029,1030],{"class":912},") ",[759,1032,906],{"class":839},[759,1034,1036,1039,1042,1045,1047,1049],{"class":761,"line":1035},10,[759,1037,1038],{"class":978},"    const",[759,1040,1041],{"class":843}," log",[759,1043,1044],{"class":839}," =",[759,1046,875],{"class":899},[759,1048,903],{"class":912},[759,1050,906],{"class":839},[759,1052,1054,1057,1059,1061,1063,1066],{"class":761,"line":1053},11,[759,1055,1056],{"class":912},"      messageId",[759,1058,916],{"class":839},[759,1060,1016],{"class":843},[759,1062,944],{"class":839},[759,1064,1065],{"class":843},"messageId",[759,1067,1068],{"class":839},",\n",[759,1070,1072,1075,1077,1079,1081,1084,1087,1090],{"class":761,"line":1071},12,[759,1073,1074],{"class":912},"      approximateReceiveCount",[759,1076,916],{"class":839},[759,1078,1016],{"class":843},[759,1080,944],{"class":839},[759,1082,1083],{"class":843},"attributes",[759,1085,1086],{"class":839},"?.",[759,1088,1089],{"class":843},"ApproximateReceiveCount",[759,1091,1068],{"class":839},[759,1093,1095,1098],{"class":761,"line":1094},13,[759,1096,1097],{"class":839},"    }",[759,1099,964],{"class":912},[759,1101,1103],{"class":761,"line":1102},14,[759,1104,893],{"emptyLinePlaceholder":892},[759,1106,1108,1111],{"class":761,"line":1107},15,[759,1109,1110],{"class":832},"    try",[759,1112,1001],{"class":839},[759,1114,1116,1119,1121,1124,1126,1129,1132,1134,1136,1139,1141,1143,1145,1148,1150,1152],{"class":761,"line":1115},16,[759,1117,1118],{"class":843},"      log",[759,1120,944],{"class":839},[759,1122,1123],{"class":899},"set",[759,1125,903],{"class":912},[759,1127,1128],{"class":839},"{",[759,1130,1131],{"class":912}," queue",[759,1133,916],{"class":839},[759,1135,840],{"class":839},[759,1137,1138],{"class":912}," name",[759,1140,916],{"class":839},[759,1142,1016],{"class":843},[759,1144,944],{"class":839},[759,1146,1147],{"class":843},"eventSourceARN",[759,1149,847],{"class":839},[759,1151,847],{"class":839},[759,1153,964],{"class":912},[759,1155,1157],{"class":761,"line":1156},17,[759,1158,1160],{"class":1159},"sHwdD","      \u002F\u002F … parse record.body and process the message\n",[759,1162,1164,1166,1168,1170,1172,1174,1177,1179,1181,1184,1186,1188],{"class":761,"line":1163},18,[759,1165,1118],{"class":843},[759,1167,944],{"class":839},[759,1169,1123],{"class":899},[759,1171,903],{"class":912},[759,1173,1128],{"class":839},[759,1175,1176],{"class":912}," status",[759,1178,916],{"class":839},[759,1180,853],{"class":839},[759,1182,1183],{"class":768},"ok",[759,1185,931],{"class":839},[759,1187,847],{"class":839},[759,1189,964],{"class":912},[759,1191,1193,1195,1198,1200,1203,1205],{"class":761,"line":1192},19,[759,1194,1097],{"class":839},[759,1196,1197],{"class":832}," catch",[759,1199,1010],{"class":912},[759,1201,1202],{"class":843},"error",[759,1204,1030],{"class":912},[759,1206,906],{"class":839},[759,1208,1210,1212,1214,1216,1218,1220,1223,1226,1229,1232,1235,1238,1240,1242,1245,1247,1249],{"class":761,"line":1209},20,[759,1211,1118],{"class":843},[759,1213,944],{"class":839},[759,1215,1202],{"class":899},[759,1217,903],{"class":912},[759,1219,1202],{"class":843},[759,1221,1222],{"class":839}," instanceof",[759,1224,1225],{"class":765}," Error",[759,1227,1228],{"class":839}," ?",[759,1230,1231],{"class":843}," error",[759,1233,1234],{"class":839}," :",[759,1236,1237],{"class":839}," new",[759,1239,1225],{"class":899},[759,1241,903],{"class":912},[759,1243,1244],{"class":899},"String",[759,1246,903],{"class":912},[759,1248,1202],{"class":843},[759,1250,1251],{"class":912},")))\n",[759,1253,1255,1257,1259,1261,1263,1265,1267,1269,1271,1273,1275,1277],{"class":761,"line":1254},21,[759,1256,1118],{"class":843},[759,1258,944],{"class":839},[759,1260,1123],{"class":899},[759,1262,903],{"class":912},[759,1264,1128],{"class":839},[759,1266,1176],{"class":912},[759,1268,916],{"class":839},[759,1270,853],{"class":839},[759,1272,1202],{"class":768},[759,1274,931],{"class":839},[759,1276,847],{"class":839},[759,1278,964],{"class":912},[759,1280,1282,1285],{"class":761,"line":1281},22,[759,1283,1284],{"class":832},"      throw",[759,1286,1287],{"class":843}," error\n",[759,1289,1291,1293,1296],{"class":761,"line":1290},23,[759,1292,1097],{"class":839},[759,1294,1295],{"class":832}," finally",[759,1297,1001],{"class":839},[759,1299,1301,1303,1305,1308],{"class":761,"line":1300},24,[759,1302,1118],{"class":843},[759,1304,944],{"class":839},[759,1306,1307],{"class":899},"emit",[759,1309,1310],{"class":912},"()\n",[759,1312,1314],{"class":761,"line":1313},25,[759,1315,1316],{"class":839},"    }\n",[759,1318,1320],{"class":761,"line":1319},26,[759,1321,1322],{"class":839},"  }\n",[759,1324,1326],{"class":761,"line":1325},27,[759,1327,1328],{"class":839},"}\n",[618,1330,1331,1332,713,1335,1337],{},"If you process the whole batch as one logical unit, use a ",[622,1333,1334],{},"single",[632,1336,642],{}," per handler invocation with batch metadata instead of one logger per record.",[689,1339,1341,1342],{"id":1340},"stdout-and-silent","Stdout and ",[632,1343,1344],{},"silent",[618,1346,1347,1348,1351,1352,1355,1356,1359,1360,944],{},"Many teams ingest Lambda logs from ",[622,1349,1350],{},"CloudWatch"," via stdout. If you use a ",[622,1353,1354],{},"drain adapter"," (OTLP, Datadog, Axiom, etc.) and want JSON or platform-specific formatting without duplicate console noise, set ",[632,1357,1358],{},"silent: true"," in production. See ",[627,1361,557],{"href":1362},"\u002Freference\u002Fconfiguration#silence-the-terminal",[749,1364,1366],{"className":822,"code":1365,"filename":824,"language":825,"meta":755,"style":755},"import { createAxiomDrain } from 'evlog\u002Faxiom'\nimport { initLogger } from 'evlog'\n\ninitLogger({\n  env: { service: 'sqs-consumer' },\n  silent: process.env.NODE_ENV === 'production',\n  drain: createAxiomDrain(),\n})\n",[632,1367,1368,1388,1406,1410,1418,1439,1468,1482],{"__ignoreMap":755},[759,1369,1370,1372,1374,1377,1379,1381,1383,1386],{"class":761,"line":762},[759,1371,833],{"class":832},[759,1373,840],{"class":839},[759,1375,1376],{"class":843}," createAxiomDrain",[759,1378,847],{"class":839},[759,1380,850],{"class":832},[759,1382,853],{"class":839},[759,1384,1385],{"class":768},"evlog\u002Faxiom",[759,1387,859],{"class":839},[759,1389,1390,1392,1394,1396,1398,1400,1402,1404],{"class":761,"line":862},[759,1391,833],{"class":832},[759,1393,840],{"class":839},[759,1395,869],{"class":843},[759,1397,847],{"class":839},[759,1399,850],{"class":832},[759,1401,853],{"class":839},[759,1403,884],{"class":768},[759,1405,859],{"class":839},[759,1407,1408],{"class":761,"line":889},[759,1409,893],{"emptyLinePlaceholder":892},[759,1411,1412,1414,1416],{"class":761,"line":896},[759,1413,900],{"class":899},[759,1415,903],{"class":843},[759,1417,906],{"class":839},[759,1419,1420,1422,1424,1426,1428,1430,1432,1434,1436],{"class":761,"line":909},[759,1421,913],{"class":912},[759,1423,916],{"class":839},[759,1425,840],{"class":839},[759,1427,921],{"class":912},[759,1429,916],{"class":839},[759,1431,853],{"class":839},[759,1433,928],{"class":768},[759,1435,931],{"class":839},[759,1437,1438],{"class":839}," },\n",[759,1440,1441,1444,1446,1448,1450,1452,1454,1456,1459,1461,1464,1466],{"class":761,"line":958},[759,1442,1443],{"class":912},"  silent",[759,1445,916],{"class":839},[759,1447,941],{"class":843},[759,1449,944],{"class":839},[759,1451,947],{"class":843},[759,1453,944],{"class":839},[759,1455,952],{"class":843},[759,1457,1458],{"class":839},"===",[759,1460,853],{"class":839},[759,1462,1463],{"class":768},"production",[759,1465,931],{"class":839},[759,1467,1068],{"class":839},[759,1469,1470,1473,1475,1477,1480],{"class":761,"line":967},[759,1471,1472],{"class":912},"  drain",[759,1474,916],{"class":839},[759,1476,1376],{"class":899},[759,1478,1479],{"class":843},"()",[759,1481,1068],{"class":839},[759,1483,1484,1486],{"class":761,"line":972},[759,1485,961],{"class":839},[759,1487,964],{"class":843},[1489,1490,1493,1494,1496,1497,1500],"callout",{"color":1491,"icon":1492},"warning","i-lucide-alert-triangle","If ",[632,1495,1344],{}," is enabled without a ",[632,1498,1499],{},"drain",", events may not be visible anywhere. See the configuration docs for details.",[689,1502,1504],{"id":1503},"error-handling","Error handling",[618,1506,1507,1508,1511,1512,1515,1516,1515,1519,1522],{},"Use ",[632,1509,1510],{},"createError"," where you want structured fields (",[632,1513,1514],{},"why",", ",[632,1517,1518],{},"fix",[632,1520,1521],{},"link","). Map failures to your Lambda return or rethrow so SQS retry\u002FDLQ behavior stays correct. evlog does not replace AWS error semantics.",[749,1524,1526],{"className":822,"code":1525,"filename":824,"language":825,"meta":755,"style":755},"import { createError } from 'evlog'\n\nthrow createError({\n  message: 'Invalid payload',\n  status: 400,\n  why: 'Required field missing',\n  fix: 'Include orderId in the message body',\n})\n",[632,1527,1528,1547,1551,1562,1578,1591,1607,1623],{"__ignoreMap":755},[759,1529,1530,1532,1534,1537,1539,1541,1543,1545],{"class":761,"line":762},[759,1531,833],{"class":832},[759,1533,840],{"class":839},[759,1535,1536],{"class":843}," createError",[759,1538,847],{"class":839},[759,1540,850],{"class":832},[759,1542,853],{"class":839},[759,1544,884],{"class":768},[759,1546,859],{"class":839},[759,1548,1549],{"class":761,"line":862},[759,1550,893],{"emptyLinePlaceholder":892},[759,1552,1553,1556,1558,1560],{"class":761,"line":889},[759,1554,1555],{"class":832},"throw",[759,1557,1536],{"class":899},[759,1559,903],{"class":843},[759,1561,906],{"class":839},[759,1563,1564,1567,1569,1571,1574,1576],{"class":761,"line":896},[759,1565,1566],{"class":912},"  message",[759,1568,916],{"class":839},[759,1570,853],{"class":839},[759,1572,1573],{"class":768},"Invalid payload",[759,1575,931],{"class":839},[759,1577,1068],{"class":839},[759,1579,1580,1583,1585,1589],{"class":761,"line":909},[759,1581,1582],{"class":912},"  status",[759,1584,916],{"class":839},[759,1586,1588],{"class":1587},"sbssI"," 400",[759,1590,1068],{"class":839},[759,1592,1593,1596,1598,1600,1603,1605],{"class":761,"line":958},[759,1594,1595],{"class":912},"  why",[759,1597,916],{"class":839},[759,1599,853],{"class":839},[759,1601,1602],{"class":768},"Required field missing",[759,1604,931],{"class":839},[759,1606,1068],{"class":839},[759,1608,1609,1612,1614,1616,1619,1621],{"class":761,"line":967},[759,1610,1611],{"class":912},"  fix",[759,1613,916],{"class":839},[759,1615,853],{"class":839},[759,1617,1618],{"class":768},"Include orderId in the message body",[759,1620,931],{"class":839},[759,1622,1068],{"class":839},[759,1624,1625,1627],{"class":761,"line":972},[759,1626,961],{"class":839},[759,1628,964],{"class":843},[689,1630,1632],{"id":1631},"related","Related",[657,1634,1635,1650,1664],{},[660,1636,1637,1640,1641,1643,1644,1643,1646,1649],{},[627,1638,1639],{"href":301},"Standalone TypeScript",": same ",[632,1642,900],{}," + ",[632,1645,695],{},[632,1647,1648],{},"emit()"," model",[660,1651,1652,1654,1655,1515,1657,1010,1660,1663],{},[627,1653,557],{"href":558},": ",[632,1656,1344],{},[632,1658,1659],{},"env.region",[632,1661,1662],{},"AWS_REGION","), drains",[660,1665,1666,1668],{},[627,1667,51],{"href":52},": designing one comprehensive event per unit of work",[1670,1671,1672],"style",{},"html pre.shiki code .sBMFI, html code.shiki .sBMFI{--shiki-light:#E2931D;--shiki-default:#FFCB6B;--shiki-dark:#FFCB6B}html pre.shiki code .sfazB, html code.shiki .sfazB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: 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handlers.","md",null,{},{"title":314,"icon":317},{"title":314,"description":1685},"X6QwDnZUl1sNqZ1Y92Zlo46sZ81Iq1GQB2RWLbgpsqc",[1693,1695],{"title":309,"path":310,"stem":311,"description":1694,"icon":312,"children":-1},"`withEvlog(handler)` wraps an oRPC handler and the procedure middleware puts the logger on `context.log`, tagging each procedure with its `operation`.",{"title":41,"path":324,"stem":325,"description":1696,"icon":107,"children":-1},"Recipes that each solve one problem: browser logs, AI SDK calls, user identity, a tamper-evident audit trail, tool telemetry, derived context.",1789294025289]