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Sampling lets you keep costs under control without losing visibility into what matters. evlog uses a two-tier approach: head sampling drops noise upfront, tail sampling rescues critical events after the fact.",[591,592,595,598,624],"prompt",{":actions":593,"description":594,"icon":69},"[\"copy\",\"cursor\",\"claude\"]","Enable head and tail sampling",[587,596,597],{},"Enable head and tail sampling in my evlog production config.",[599,600,601,605,608,615,618,621],"ul",{},[602,603,604],"li",{},"Identify my framework and locate the evlog config (nuxt.config.ts, lib\u002Fevlog.ts, initLogger, etc.)",[602,606,607],{},"Configure sampling.rates per level: { info: 10, warn: 50, debug: 0, error: 100 } as a starting point",[602,609,610,611],{},"Add sampling.keep rules to force-keep critical events: ",[612,613,614],"span",{},"{ status: 400 }, { duration: 1000 }, { path: '\u002Fapi\u002Fcritical\u002F**' }",[602,616,617],{},"For business-specific keep logic (e.g. premium users), add a custom keep callback or evlog:emit:keep hook",[602,619,620],{},"Wrap sampling in a $production override so dev keeps full logging",[602,622,623],{},"Confirm errors are always kept by default unless I explicitly set error: 0",[587,625,626,627,633,634],{},"Docs: ",[628,629,630],"a",{"href":630,"rel":631},"https:\u002F\u002Fwww.evlog.dev\u002Flearn\u002Fsampling",[632],"nofollow","\nBest practices: ",[628,635,636],{"href":636,"rel":637},"https:\u002F\u002Fwww.evlog.dev\u002Freference\u002Fbest-practices",[632],[639,640,642],"h2",{"id":641},"drop-noise-before-it-is-built","Drop noise before it is built",[587,644,645,646,650],{},"Head sampling randomly keeps a percentage of logs per level. It runs ",[647,648,649],"strong",{},"before"," the request completes, acting as a coin flip at emission time.",[652,653],"head-sampling-plinko",{},[655,656,657,844,1003],"code-group",{},[658,659,665],"pre",{"className":660,"code":661,"filename":662,"language":663,"meta":664,"style":664},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","export default defineNuxtConfig({\n  modules: ['evlog\u002Fnuxt'],\n  evlog: {\n    sampling: {\n      rates: {\n        info: 10,    \u002F\u002F Keep 10% of info logs\n        warn: 50,    \u002F\u002F Keep 50% of warnings\n        debug: 0,    \u002F\u002F Drop all debug logs\n        error: 100,  \u002F\u002F Always keep errors (default)\n      },\n    },\n  },\n})\n","nuxt.config.ts","typescript","",[666,667,668,691,719,730,740,750,769,785,801,817,823,829,835],"code",{"__ignoreMap":664},[612,669,672,676,679,683,687],{"class":670,"line":671},"line",1,[612,673,675],{"class":674},"s7zQu","export",[612,677,678],{"class":674}," default",[612,680,682],{"class":681},"s2Zo4"," defineNuxtConfig",[612,684,686],{"class":685},"sTEyZ","(",[612,688,690],{"class":689},"sMK4o","{\n",[612,692,694,698,701,704,707,711,713,716],{"class":670,"line":693},2,[612,695,697],{"class":696},"swJcz","  modules",[612,699,700],{"class":689},":",[612,702,703],{"class":685}," [",[612,705,706],{"class":689},"'",[612,708,710],{"class":709},"sfazB","evlog\u002Fnuxt",[612,712,706],{"class":689},[612,714,715],{"class":685},"]",[612,717,718],{"class":689},",\n",[612,720,722,725,727],{"class":670,"line":721},3,[612,723,724],{"class":696},"  evlog",[612,726,700],{"class":689},[612,728,729],{"class":689}," {\n",[612,731,733,736,738],{"class":670,"line":732},4,[612,734,735],{"class":696},"    sampling",[612,737,700],{"class":689},[612,739,729],{"class":689},[612,741,743,746,748],{"class":670,"line":742},5,[612,744,745],{"class":696},"      rates",[612,747,700],{"class":689},[612,749,729],{"class":689},[612,751,753,756,758,762,765],{"class":670,"line":752},6,[612,754,755],{"class":696},"        info",[612,757,700],{"class":689},[612,759,761],{"class":760},"sbssI"," 10",[612,763,764],{"class":689},",",[612,766,768],{"class":767},"sHwdD","    \u002F\u002F Keep 10% of info logs\n",[612,770,772,775,777,780,782],{"class":670,"line":771},7,[612,773,774],{"class":696},"        warn",[612,776,700],{"class":689},[612,778,779],{"class":760}," 50",[612,781,764],{"class":689},[612,783,784],{"class":767},"    \u002F\u002F Keep 50% of warnings\n",[612,786,788,791,793,796,798],{"class":670,"line":787},8,[612,789,790],{"class":696},"        debug",[612,792,700],{"class":689},[612,794,795],{"class":760}," 0",[612,797,764],{"class":689},[612,799,800],{"class":767},"    \u002F\u002F Drop all debug logs\n",[612,802,804,807,809,812,814],{"class":670,"line":803},9,[612,805,806],{"class":696},"        error",[612,808,700],{"class":689},[612,810,811],{"class":760}," 100",[612,813,764],{"class":689},[612,815,816],{"class":767},"  \u002F\u002F Always keep errors (default)\n",[612,818,820],{"class":670,"line":819},10,[612,821,822],{"class":689},"      },\n",[612,824,826],{"class":670,"line":825},11,[612,827,828],{"class":689},"    },\n",[612,830,832],{"class":670,"line":831},12,[612,833,834],{"class":689},"  },\n",[612,836,838,841],{"class":670,"line":837},13,[612,839,840],{"class":689},"}",[612,842,843],{"class":685},")\n",[658,845,848],{"className":660,"code":846,"filename":847,"language":663,"meta":664,"style":664},"import { createEvlog } from 'evlog\u002Fnext'\n\nexport const { withEvlog, useLogger } = createEvlog({\n  service: 'my-app',\n  sampling: {\n    rates: {\n      info: 10,\n      warn: 50,\n      debug: 0,\n      error: 100,\n    },\n  },\n})\n","lib\u002Fevlog.ts (Next.js)",[666,849,850,876,882,911,927,936,945,956,967,978,989,993,997],{"__ignoreMap":664},[612,851,852,855,858,861,864,867,870,873],{"class":670,"line":671},[612,853,854],{"class":674},"import",[612,856,857],{"class":689}," {",[612,859,860],{"class":685}," createEvlog",[612,862,863],{"class":689}," }",[612,865,866],{"class":674}," from",[612,868,869],{"class":689}," '",[612,871,872],{"class":709},"evlog\u002Fnext",[612,874,875],{"class":689},"'\n",[612,877,878],{"class":670,"line":693},[612,879,881],{"emptyLinePlaceholder":880},true,"\n",[612,883,884,886,890,892,895,897,900,902,905,907,909],{"class":670,"line":721},[612,885,675],{"class":674},[612,887,889],{"class":888},"spNyl"," const",[612,891,857],{"class":689},[612,893,894],{"class":685}," withEvlog",[612,896,764],{"class":689},[612,898,899],{"class":685}," useLogger ",[612,901,840],{"class":689},[612,903,904],{"class":689}," =",[612,906,860],{"class":681},[612,908,686],{"class":685},[612,910,690],{"class":689},[612,912,913,916,918,920,923,925],{"class":670,"line":732},[612,914,915],{"class":696},"  service",[612,917,700],{"class":689},[612,919,869],{"class":689},[612,921,922],{"class":709},"my-app",[612,924,706],{"class":689},[612,926,718],{"class":689},[612,928,929,932,934],{"class":670,"line":742},[612,930,931],{"class":696},"  sampling",[612,933,700],{"class":689},[612,935,729],{"class":689},[612,937,938,941,943],{"class":670,"line":752},[612,939,940],{"class":696},"    rates",[612,942,700],{"class":689},[612,944,729],{"class":689},[612,946,947,950,952,954],{"class":670,"line":771},[612,948,949],{"class":696},"      info",[612,951,700],{"class":689},[612,953,761],{"class":760},[612,955,718],{"class":689},[612,957,958,961,963,965],{"class":670,"line":787},[612,959,960],{"class":696},"      warn",[612,962,700],{"class":689},[612,964,779],{"class":760},[612,966,718],{"class":689},[612,968,969,972,974,976],{"class":670,"line":803},[612,970,971],{"class":696},"      debug",[612,973,700],{"class":689},[612,975,795],{"class":760},[612,977,718],{"class":689},[612,979,980,983,985,987],{"class":670,"line":819},[612,981,982],{"class":696},"      error",[612,984,700],{"class":689},[612,986,811],{"class":760},[612,988,718],{"class":689},[612,990,991],{"class":670,"line":825},[612,992,828],{"class":689},[612,994,995],{"class":670,"line":831},[612,996,834],{"class":689},[612,998,999,1001],{"class":670,"line":837},[612,1000,840],{"class":689},[612,1002,843],{"class":685},[658,1004,1007],{"className":660,"code":1005,"filename":1006,"language":663,"meta":664,"style":664},"import { initLogger } from 'evlog'\n\ninitLogger({\n  env: { service: 'my-app' },\n  sampling: {\n    rates: {\n      info: 10,\n      warn: 50,\n      debug: 0,\n      error: 100,\n    },\n  },\n})\n","index.ts (Hono \u002F Express \u002F Fastify)",[666,1008,1009,1029,1033,1042,1065,1073,1081,1091,1101,1111,1121,1125,1129],{"__ignoreMap":664},[612,1010,1011,1013,1015,1018,1020,1022,1024,1027],{"class":670,"line":671},[612,1012,854],{"class":674},[612,1014,857],{"class":689},[612,1016,1017],{"class":685}," initLogger",[612,1019,863],{"class":689},[612,1021,866],{"class":674},[612,1023,869],{"class":689},[612,1025,1026],{"class":709},"evlog",[612,1028,875],{"class":689},[612,1030,1031],{"class":670,"line":693},[612,1032,881],{"emptyLinePlaceholder":880},[612,1034,1035,1038,1040],{"class":670,"line":721},[612,1036,1037],{"class":681},"initLogger",[612,1039,686],{"class":685},[612,1041,690],{"class":689},[612,1043,1044,1047,1049,1051,1054,1056,1058,1060,1062],{"class":670,"line":732},[612,1045,1046],{"class":696},"  env",[612,1048,700],{"class":689},[612,1050,857],{"class":689},[612,1052,1053],{"class":696}," service",[612,1055,700],{"class":689},[612,1057,869],{"class":689},[612,1059,922],{"class":709},[612,1061,706],{"class":689},[612,1063,1064],{"class":689}," },\n",[612,1066,1067,1069,1071],{"class":670,"line":742},[612,1068,931],{"class":696},[612,1070,700],{"class":689},[612,1072,729],{"class":689},[612,1074,1075,1077,1079],{"class":670,"line":752},[612,1076,940],{"class":696},[612,1078,700],{"class":689},[612,1080,729],{"class":689},[612,1082,1083,1085,1087,1089],{"class":670,"line":771},[612,1084,949],{"class":696},[612,1086,700],{"class":689},[612,1088,761],{"class":760},[612,1090,718],{"class":689},[612,1092,1093,1095,1097,1099],{"class":670,"line":787},[612,1094,960],{"class":696},[612,1096,700],{"class":689},[612,1098,779],{"class":760},[612,1100,718],{"class":689},[612,1102,1103,1105,1107,1109],{"class":670,"line":803},[612,1104,971],{"class":696},[612,1106,700],{"class":689},[612,1108,795],{"class":760},[612,1110,718],{"class":689},[612,1112,1113,1115,1117,1119],{"class":670,"line":819},[612,1114,982],{"class":696},[612,1116,700],{"class":689},[612,1118,811],{"class":760},[612,1120,718],{"class":689},[612,1122,1123],{"class":670,"line":825},[612,1124,828],{"class":689},[612,1126,1127],{"class":670,"line":831},[612,1128,834],{"class":689},[612,1130,1131,1133],{"class":670,"line":837},[612,1132,840],{"class":689},[612,1134,843],{"class":685},[587,1136,1137,1138,1141],{},"Each level is a percentage from 0 to 100. Levels you don't configure default to 100% (keep everything). Error defaults to 100% even when other levels are configured, so you have to explicitly set ",[666,1139,1140],{},"error: 0"," to drop errors.",[1143,1144,1146,1147,1150],"callout",{"color":1145,"icon":13},"info","Head sampling is random. A ",[666,1148,1149],{},"10%"," rate means roughly 1 in 10 info logs are kept, not exactly 1 in 10.",[639,1152,1154],{"id":1153},"keep-an-event-once-you-know-its-outcome","Keep an event once you know its outcome",[587,1156,1157,1158,1161],{},"Head sampling is blind: it doesn't know if a request was slow, failed, or hit a critical path. Tail sampling fixes this by evaluating ",[647,1159,1160],{},"after"," the request completes and force-keeping logs that match specific conditions.",[658,1163,1165],{"className":660,"code":1164,"filename":662,"language":663,"meta":664,"style":664},"\u002F\u002F Sampling config, works the same across all frameworks\nevlog: {\n  sampling: {\n    rates: { info: 10 },\n    keep: [\n      { status: 400 },              \u002F\u002F HTTP status >= 400\n      { duration: 1000 },           \u002F\u002F Request took >= 1s\n      { path: '\u002Fapi\u002Fpayments\u002F**' }, \u002F\u002F Critical path (glob)\n    ],\n  },\n}\n",[666,1166,1167,1172,1181,1189,1206,1216,1235,1252,1273,1280,1284],{"__ignoreMap":664},[612,1168,1169],{"class":670,"line":671},[612,1170,1171],{"class":767},"\u002F\u002F Sampling config, works the same across all frameworks\n",[612,1173,1174,1177,1179],{"class":670,"line":693},[612,1175,1026],{"class":1176},"sBMFI",[612,1178,700],{"class":689},[612,1180,729],{"class":689},[612,1182,1183,1185,1187],{"class":670,"line":721},[612,1184,931],{"class":1176},[612,1186,700],{"class":689},[612,1188,729],{"class":689},[612,1190,1191,1193,1195,1197,1200,1202,1204],{"class":670,"line":732},[612,1192,940],{"class":1176},[612,1194,700],{"class":689},[612,1196,857],{"class":689},[612,1198,1199],{"class":1176}," info",[612,1201,700],{"class":689},[612,1203,761],{"class":760},[612,1205,1064],{"class":689},[612,1207,1208,1211,1213],{"class":670,"line":742},[612,1209,1210],{"class":1176},"    keep",[612,1212,700],{"class":689},[612,1214,1215],{"class":696}," [\n",[612,1217,1218,1221,1224,1226,1229,1232],{"class":670,"line":752},[612,1219,1220],{"class":689},"      {",[612,1222,1223],{"class":696}," status",[612,1225,700],{"class":689},[612,1227,1228],{"class":760}," 400",[612,1230,1231],{"class":689}," },",[612,1233,1234],{"class":767},"              \u002F\u002F HTTP status >= 400\n",[612,1236,1237,1239,1242,1244,1247,1249],{"class":670,"line":771},[612,1238,1220],{"class":689},[612,1240,1241],{"class":696}," duration",[612,1243,700],{"class":689},[612,1245,1246],{"class":760}," 1000",[612,1248,1231],{"class":689},[612,1250,1251],{"class":767},"           \u002F\u002F Request took >= 1s\n",[612,1253,1254,1256,1259,1261,1263,1266,1268,1270],{"class":670,"line":787},[612,1255,1220],{"class":689},[612,1257,1258],{"class":696}," path",[612,1260,700],{"class":689},[612,1262,869],{"class":689},[612,1264,1265],{"class":709},"\u002Fapi\u002Fpayments\u002F**",[612,1267,706],{"class":689},[612,1269,1231],{"class":689},[612,1271,1272],{"class":767}," \u002F\u002F Critical path (glob)\n",[612,1274,1275,1278],{"class":670,"line":803},[612,1276,1277],{"class":696},"    ]",[612,1279,718],{"class":689},[612,1281,1282],{"class":670,"line":819},[612,1283,834],{"class":689},[612,1285,1286],{"class":670,"line":825},[612,1287,1288],{"class":689},"}\n",[587,1290,1291,1292,1295,1296,1299,1300,1303,1304,1307,1308,1311],{},"Conditions use ",[647,1293,1294],{},">="," comparison for ",[666,1297,1298],{},"status"," and ",[666,1301,1302],{},"duration",", and glob matching for ",[666,1305,1306],{},"path",". If ",[647,1309,1310],{},"any"," condition matches, the log is kept regardless of head sampling (OR logic).",[1313,1314,1316],"h3",{"id":1315},"conditions-you-can-match-on","Conditions you can match on",[1318,1319,1320,1336],"table",{},[1321,1322,1323],"thead",{},[1324,1325,1326,1330,1333],"tr",{},[1327,1328,1329],"th",{},"Condition",[1327,1331,1332],{},"Type",[1327,1334,1335],{},"Description",[1337,1338,1339,1358,1371],"tbody",{},[1324,1340,1341,1346,1351],{},[1342,1343,1344],"td",{},[666,1345,1298],{},[1342,1347,1348],{},[666,1349,1350],{},"number",[1342,1352,1353,1354,1357],{},"Keep if HTTP status >= value (e.g., ",[666,1355,1356],{},"400"," catches all 4xx and 5xx)",[1324,1359,1360,1364,1368],{},[1342,1361,1362],{},[666,1363,1302],{},[1342,1365,1366],{},[666,1367,1350],{},[1342,1369,1370],{},"Keep if request duration >= value in milliseconds",[1324,1372,1373,1377,1382],{},[1342,1374,1375],{},[666,1376,1306],{},[1342,1378,1379],{},[666,1380,1381],{},"string",[1342,1383,1384,1385,1388],{},"Keep if request path matches glob pattern (e.g., ",[666,1386,1387],{},"'\u002Fapi\u002Fcritical\u002F**'",")",[639,1390,1392],{"id":1391},"combine-head-and-tail-sampling","Combine head and tail sampling",[587,1394,1395],{},"The two tiers complement each other:",[1397,1398,1399,1405,1415,1421],"ol",{},[602,1400,1401,1404],{},[647,1402,1403],{},"Request completes"," - evlog knows the status, duration, and path",[602,1406,1407,1410,1411,1414],{},[647,1408,1409],{},"Tail sampling evaluates"," - if any ",[666,1412,1413],{},"keep"," condition matches, the log is force-kept",[602,1416,1417,1420],{},[647,1418,1419],{},"Head sampling applies"," - only if tail sampling didn't force-keep, the random percentage check runs",[602,1422,1423,1426],{},[647,1424,1425],{},"Log emits or drops"," - kept logs go through enrichment and draining as normal",[587,1428,1429,1430,1433,1434,1436],{},"This means a request to ",[666,1431,1432],{},"\u002Fapi\u002Fpayments\u002Fcharge"," that returns a 500 in 2 seconds will always be logged, even if ",[666,1435,1145],{}," is set to 1%. The tail conditions rescue it.",[1438,1439],"tail-sample-decision",{},[655,1441,1442,1518],{},[658,1443,1445],{"className":660,"code":1444,"filename":526,"language":663,"meta":664,"style":664},"sampling: {\n  rates: { info: 10 },\n  keep: [\n    { status: 400 },\n    { duration: 1000 },\n  ],\n}\n",[666,1446,1447,1456,1473,1482,1495,1507,1514],{"__ignoreMap":664},[612,1448,1449,1452,1454],{"class":670,"line":671},[612,1450,1451],{"class":1176},"sampling",[612,1453,700],{"class":689},[612,1455,729],{"class":689},[612,1457,1458,1461,1463,1465,1467,1469,1471],{"class":670,"line":693},[612,1459,1460],{"class":1176},"  rates",[612,1462,700],{"class":689},[612,1464,857],{"class":689},[612,1466,1199],{"class":1176},[612,1468,700],{"class":689},[612,1470,761],{"class":760},[612,1472,1064],{"class":689},[612,1474,1475,1478,1480],{"class":670,"line":721},[612,1476,1477],{"class":1176},"  keep",[612,1479,700],{"class":689},[612,1481,1215],{"class":696},[612,1483,1484,1487,1489,1491,1493],{"class":670,"line":732},[612,1485,1486],{"class":689},"    {",[612,1488,1223],{"class":696},[612,1490,700],{"class":689},[612,1492,1228],{"class":760},[612,1494,1064],{"class":689},[612,1496,1497,1499,1501,1503,1505],{"class":670,"line":742},[612,1498,1486],{"class":689},[612,1500,1241],{"class":696},[612,1502,700],{"class":689},[612,1504,1246],{"class":760},[612,1506,1064],{"class":689},[612,1508,1509,1512],{"class":670,"line":752},[612,1510,1511],{"class":696},"  ]",[612,1513,718],{"class":689},[612,1515,1516],{"class":670,"line":771},[612,1517,1288],{"class":689},[658,1519,1524],{"className":1520,"code":1521,"filename":1522,"language":1523,"meta":664,"style":664},"language-bash shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","POST \u002Fapi\u002Fusers     200  45ms   → 10% chance (head sampling)\nPOST \u002Fapi\u002Fusers     500  45ms   → always kept (status >= 400)\nGET  \u002Fapi\u002Fproducts  200  2300ms → always kept (duration >= 1000)\nPOST \u002Fapi\u002Fcheckout  200  120ms  → 10% chance (head sampling)\n","What gets logged","bash",[666,1525,1526,1556,1588,1620],{"__ignoreMap":664},[612,1527,1528,1531,1534,1537,1540,1543,1546,1549,1552,1554],{"class":670,"line":671},[612,1529,1530],{"class":1176},"POST",[612,1532,1533],{"class":709}," \u002Fapi\u002Fusers",[612,1535,1536],{"class":760},"     200",[612,1538,1539],{"class":709},"  45ms",[612,1541,1542],{"class":709},"   →",[612,1544,1545],{"class":709}," 10%",[612,1547,1548],{"class":709}," chance",[612,1550,1551],{"class":685}," (head ",[612,1553,1451],{"class":709},[612,1555,843],{"class":685},[612,1557,1558,1560,1562,1565,1567,1569,1572,1575,1578,1581,1584,1586],{"class":670,"line":693},[612,1559,1530],{"class":1176},[612,1561,1533],{"class":709},[612,1563,1564],{"class":760},"     500",[612,1566,1539],{"class":709},[612,1568,1542],{"class":709},[612,1570,1571],{"class":709}," always",[612,1573,1574],{"class":709}," kept",[612,1576,1577],{"class":685}," (status ",[612,1579,1580],{"class":689},">",[612,1582,1583],{"class":709},"=",[612,1585,1228],{"class":760},[612,1587,843],{"class":685},[612,1589,1590,1593,1596,1599,1602,1605,1607,1609,1612,1614,1616,1618],{"class":670,"line":721},[612,1591,1592],{"class":1176},"GET",[612,1594,1595],{"class":709},"  \u002Fapi\u002Fproducts",[612,1597,1598],{"class":760},"  200",[612,1600,1601],{"class":709},"  2300ms",[612,1603,1604],{"class":709}," →",[612,1606,1571],{"class":709},[612,1608,1574],{"class":709},[612,1610,1611],{"class":685}," (duration ",[612,1613,1580],{"class":689},[612,1615,1583],{"class":709},[612,1617,1246],{"class":760},[612,1619,843],{"class":685},[612,1621,1622,1624,1627,1629,1632,1635,1637,1639,1641,1643],{"class":670,"line":732},[612,1623,1530],{"class":1176},[612,1625,1626],{"class":709}," \u002Fapi\u002Fcheckout",[612,1628,1598],{"class":760},[612,1630,1631],{"class":709},"  120ms",[612,1633,1634],{"class":709},"  →",[612,1636,1545],{"class":709},[612,1638,1548],{"class":709},[612,1640,1551],{"class":685},[612,1642,1451],{"class":709},[612,1644,843],{"class":685},[639,1646,1648],{"id":1647},"write-your-own-keep-rule","Write your own keep rule",[587,1650,1651,1652,1655,1656,1658],{},"For conditions beyond status, duration, and path, use the ",[666,1653,1654],{},"evlog:emit:keep"," hook in Nuxt\u002FNitro or the ",[666,1657,1413],{}," callback in other frameworks.",[655,1660,1661,1803,1990],{},[658,1662,1665],{"className":660,"code":1663,"filename":1664,"language":663,"meta":664,"style":664},"export default defineNitroPlugin((nitroApp) => {\n  nitroApp.hooks.hook('evlog:emit:keep', (ctx) => {\n    if (ctx.context.user?.plan === 'enterprise') {\n      ctx.shouldKeep = true\n    }\n  })\n})\n","server\u002Fplugins\u002Fsampling.ts (Nuxt)",[666,1666,1667,1691,1729,1769,1785,1790,1797],{"__ignoreMap":664},[612,1668,1669,1671,1673,1676,1678,1680,1684,1686,1689],{"class":670,"line":671},[612,1670,675],{"class":674},[612,1672,678],{"class":674},[612,1674,1675],{"class":681}," defineNitroPlugin",[612,1677,686],{"class":685},[612,1679,686],{"class":689},[612,1681,1683],{"class":1682},"sHdIc","nitroApp",[612,1685,1388],{"class":689},[612,1687,1688],{"class":888}," =>",[612,1690,729],{"class":689},[612,1692,1693,1696,1699,1702,1704,1707,1709,1711,1713,1715,1717,1720,1723,1725,1727],{"class":670,"line":693},[612,1694,1695],{"class":685},"  nitroApp",[612,1697,1698],{"class":689},".",[612,1700,1701],{"class":685},"hooks",[612,1703,1698],{"class":689},[612,1705,1706],{"class":681},"hook",[612,1708,686],{"class":696},[612,1710,706],{"class":689},[612,1712,1654],{"class":709},[612,1714,706],{"class":689},[612,1716,764],{"class":689},[612,1718,1719],{"class":689}," (",[612,1721,1722],{"class":1682},"ctx",[612,1724,1388],{"class":689},[612,1726,1688],{"class":888},[612,1728,729],{"class":689},[612,1730,1731,1734,1736,1738,1740,1743,1745,1748,1751,1754,1757,1759,1762,1764,1767],{"class":670,"line":721},[612,1732,1733],{"class":674},"    if",[612,1735,1719],{"class":696},[612,1737,1722],{"class":685},[612,1739,1698],{"class":689},[612,1741,1742],{"class":685},"context",[612,1744,1698],{"class":689},[612,1746,1747],{"class":685},"user",[612,1749,1750],{"class":689},"?.",[612,1752,1753],{"class":685},"plan",[612,1755,1756],{"class":689}," ===",[612,1758,869],{"class":689},[612,1760,1761],{"class":709},"enterprise",[612,1763,706],{"class":689},[612,1765,1766],{"class":696},") ",[612,1768,690],{"class":689},[612,1770,1771,1774,1776,1779,1781],{"class":670,"line":732},[612,1772,1773],{"class":685},"      ctx",[612,1775,1698],{"class":689},[612,1777,1778],{"class":685},"shouldKeep",[612,1780,904],{"class":689},[612,1782,1784],{"class":1783},"sfNiH"," true\n",[612,1786,1787],{"class":670,"line":742},[612,1788,1789],{"class":689},"    }\n",[612,1791,1792,1795],{"class":670,"line":752},[612,1793,1794],{"class":689},"  }",[612,1796,843],{"class":696},[612,1798,1799,1801],{"class":670,"line":771},[612,1800,840],{"class":689},[612,1802,843],{"class":685},[658,1804,1806],{"className":660,"code":1805,"filename":847,"language":663,"meta":664,"style":664},"import { createEvlog } from 'evlog\u002Fnext'\n\nexport const { withEvlog, useLogger } = createEvlog({\n  service: 'my-app',\n  sampling: {\n    rates: { info: 10 },\n    keep: [{ status: 400 }],\n  },\n  keep(ctx) {\n    if (ctx.context.user?.plan === 'enterprise') {\n      ctx.shouldKeep = true\n    }\n  },\n})\n",[666,1807,1808,1826,1830,1854,1868,1876,1892,1915,1919,1931,1963,1975,1979,1983],{"__ignoreMap":664},[612,1809,1810,1812,1814,1816,1818,1820,1822,1824],{"class":670,"line":671},[612,1811,854],{"class":674},[612,1813,857],{"class":689},[612,1815,860],{"class":685},[612,1817,863],{"class":689},[612,1819,866],{"class":674},[612,1821,869],{"class":689},[612,1823,872],{"class":709},[612,1825,875],{"class":689},[612,1827,1828],{"class":670,"line":693},[612,1829,881],{"emptyLinePlaceholder":880},[612,1831,1832,1834,1836,1838,1840,1842,1844,1846,1848,1850,1852],{"class":670,"line":721},[612,1833,675],{"class":674},[612,1835,889],{"class":888},[612,1837,857],{"class":689},[612,1839,894],{"class":685},[612,1841,764],{"class":689},[612,1843,899],{"class":685},[612,1845,840],{"class":689},[612,1847,904],{"class":689},[612,1849,860],{"class":681},[612,1851,686],{"class":685},[612,1853,690],{"class":689},[612,1855,1856,1858,1860,1862,1864,1866],{"class":670,"line":732},[612,1857,915],{"class":696},[612,1859,700],{"class":689},[612,1861,869],{"class":689},[612,1863,922],{"class":709},[612,1865,706],{"class":689},[612,1867,718],{"class":689},[612,1869,1870,1872,1874],{"class":670,"line":742},[612,1871,931],{"class":696},[612,1873,700],{"class":689},[612,1875,729],{"class":689},[612,1877,1878,1880,1882,1884,1886,1888,1890],{"class":670,"line":752},[612,1879,940],{"class":696},[612,1881,700],{"class":689},[612,1883,857],{"class":689},[612,1885,1199],{"class":696},[612,1887,700],{"class":689},[612,1889,761],{"class":760},[612,1891,1064],{"class":689},[612,1893,1894,1896,1898,1900,1903,1905,1907,1909,1911,1913],{"class":670,"line":771},[612,1895,1210],{"class":696},[612,1897,700],{"class":689},[612,1899,703],{"class":685},[612,1901,1902],{"class":689},"{",[612,1904,1223],{"class":696},[612,1906,700],{"class":689},[612,1908,1228],{"class":760},[612,1910,863],{"class":689},[612,1912,715],{"class":685},[612,1914,718],{"class":689},[612,1916,1917],{"class":670,"line":787},[612,1918,834],{"class":689},[612,1920,1921,1923,1925,1927,1929],{"class":670,"line":803},[612,1922,1477],{"class":696},[612,1924,686],{"class":689},[612,1926,1722],{"class":1682},[612,1928,1388],{"class":689},[612,1930,729],{"class":689},[612,1932,1933,1935,1937,1939,1941,1943,1945,1947,1949,1951,1953,1955,1957,1959,1961],{"class":670,"line":819},[612,1934,1733],{"class":674},[612,1936,1719],{"class":696},[612,1938,1722],{"class":685},[612,1940,1698],{"class":689},[612,1942,1742],{"class":685},[612,1944,1698],{"class":689},[612,1946,1747],{"class":685},[612,1948,1750],{"class":689},[612,1950,1753],{"class":685},[612,1952,1756],{"class":689},[612,1954,869],{"class":689},[612,1956,1761],{"class":709},[612,1958,706],{"class":689},[612,1960,1766],{"class":696},[612,1962,690],{"class":689},[612,1964,1965,1967,1969,1971,1973],{"class":670,"line":825},[612,1966,1773],{"class":685},[612,1968,1698],{"class":689},[612,1970,1778],{"class":685},[612,1972,904],{"class":689},[612,1974,1784],{"class":1783},[612,1976,1977],{"class":670,"line":831},[612,1978,1789],{"class":689},[612,1980,1981],{"class":670,"line":837},[612,1982,834],{"class":689},[612,1984,1986,1988],{"class":670,"line":1985},14,[612,1987,840],{"class":689},[612,1989,843],{"class":685},[658,1991,1994],{"className":660,"code":1992,"filename":1993,"language":663,"meta":664,"style":664},"import { evlog } from 'evlog\u002Fhono'\n\napp.use(evlog({\n  keep(ctx) {\n    if (ctx.context.user?.plan === 'enterprise') {\n      ctx.shouldKeep = true\n    }\n  },\n}))\n","index.ts (Hono)",[666,1995,1996,2016,2020,2038,2050,2082,2094,2098,2102],{"__ignoreMap":664},[612,1997,1998,2000,2002,2005,2007,2009,2011,2014],{"class":670,"line":671},[612,1999,854],{"class":674},[612,2001,857],{"class":689},[612,2003,2004],{"class":685}," evlog",[612,2006,863],{"class":689},[612,2008,866],{"class":674},[612,2010,869],{"class":689},[612,2012,2013],{"class":709},"evlog\u002Fhono",[612,2015,875],{"class":689},[612,2017,2018],{"class":670,"line":693},[612,2019,881],{"emptyLinePlaceholder":880},[612,2021,2022,2025,2027,2030,2032,2034,2036],{"class":670,"line":721},[612,2023,2024],{"class":685},"app",[612,2026,1698],{"class":689},[612,2028,2029],{"class":681},"use",[612,2031,686],{"class":685},[612,2033,1026],{"class":681},[612,2035,686],{"class":685},[612,2037,690],{"class":689},[612,2039,2040,2042,2044,2046,2048],{"class":670,"line":732},[612,2041,1477],{"class":696},[612,2043,686],{"class":689},[612,2045,1722],{"class":1682},[612,2047,1388],{"class":689},[612,2049,729],{"class":689},[612,2051,2052,2054,2056,2058,2060,2062,2064,2066,2068,2070,2072,2074,2076,2078,2080],{"class":670,"line":742},[612,2053,1733],{"class":674},[612,2055,1719],{"class":696},[612,2057,1722],{"class":685},[612,2059,1698],{"class":689},[612,2061,1742],{"class":685},[612,2063,1698],{"class":689},[612,2065,1747],{"class":685},[612,2067,1750],{"class":689},[612,2069,1753],{"class":685},[612,2071,1756],{"class":689},[612,2073,869],{"class":689},[612,2075,1761],{"class":709},[612,2077,706],{"class":689},[612,2079,1766],{"class":696},[612,2081,690],{"class":689},[612,2083,2084,2086,2088,2090,2092],{"class":670,"line":752},[612,2085,1773],{"class":685},[612,2087,1698],{"class":689},[612,2089,1778],{"class":685},[612,2091,904],{"class":689},[612,2093,1784],{"class":1783},[612,2095,2096],{"class":670,"line":771},[612,2097,1789],{"class":689},[612,2099,2100],{"class":670,"line":787},[612,2101,834],{"class":689},[612,2103,2104,2106],{"class":670,"line":803},[612,2105,840],{"class":689},[612,2107,2108],{"class":685},"))\n",[587,2110,2111,2112,2114],{},"The ",[666,2113,1722],{}," object contains:",[1318,2116,2117,2128],{},[1321,2118,2119],{},[1324,2120,2121,2124,2126],{},[1327,2122,2123],{},"Field",[1327,2125,1332],{},[1327,2127,1335],{},[1337,2129,2130,2144,2157,2171,2185,2202],{},[1324,2131,2132,2136,2141],{},[1342,2133,2134],{},[666,2135,1298],{},[1342,2137,2138],{},[666,2139,2140],{},"number | undefined",[1342,2142,2143],{},"HTTP response status",[1324,2145,2146,2150,2154],{},[1342,2147,2148],{},[666,2149,1302],{},[1342,2151,2152],{},[666,2153,2140],{},[1342,2155,2156],{},"Request duration in ms",[1324,2158,2159,2163,2168],{},[1342,2160,2161],{},[666,2162,1306],{},[1342,2164,2165],{},[666,2166,2167],{},"string | undefined",[1342,2169,2170],{},"Request path",[1324,2172,2173,2178,2182],{},[1342,2174,2175],{},[666,2176,2177],{},"method",[1342,2179,2180],{},[666,2181,2167],{},[1342,2183,2184],{},"HTTP method",[1324,2186,2187,2191,2196],{},[1342,2188,2189],{},[666,2190,1742],{},[1342,2192,2193],{},[666,2194,2195],{},"Record\u003Cstring, unknown>",[1342,2197,2198,2199],{},"All fields set via ",[666,2200,2201],{},"log.set()",[1324,2203,2204,2208,2213],{},[1342,2205,2206],{},[666,2207,1778],{},[1342,2209,2210],{},[666,2211,2212],{},"boolean",[1342,2214,2215,2216,2219],{},"Set to ",[666,2217,2218],{},"true"," to force-keep",[639,2221,2223],{"id":2222},"a-configuration-that-ships","A configuration that ships",[587,2225,2226],{},"A typical production configuration that balances cost and visibility:",[655,2228,2229,2484,2689],{},[658,2230,2232],{"className":660,"code":2231,"filename":662,"language":663,"meta":664,"style":664},"export default defineNuxtConfig({\n  modules: ['evlog\u002Fnuxt'],\n  evlog: {\n    env: { service: 'my-app' },\n  },\n  $production: {\n    evlog: {\n      sampling: {\n        rates: {\n          info: 10,\n          warn: 50,\n          debug: 0,\n          error: 100,\n        },\n        keep: [\n          { status: 400 },\n          { duration: 1000 },\n          { path: '\u002Fapi\u002Fpayments\u002F**' },\n          { path: '\u002Fapi\u002Fauth\u002F**' },\n        ],\n      },\n    },\n  },\n})\n",[666,2233,2234,2246,2264,2272,2293,2297,2306,2315,2324,2333,2344,2355,2366,2377,2382,2392,2406,2419,2436,2454,2462,2467,2472,2477],{"__ignoreMap":664},[612,2235,2236,2238,2240,2242,2244],{"class":670,"line":671},[612,2237,675],{"class":674},[612,2239,678],{"class":674},[612,2241,682],{"class":681},[612,2243,686],{"class":685},[612,2245,690],{"class":689},[612,2247,2248,2250,2252,2254,2256,2258,2260,2262],{"class":670,"line":693},[612,2249,697],{"class":696},[612,2251,700],{"class":689},[612,2253,703],{"class":685},[612,2255,706],{"class":689},[612,2257,710],{"class":709},[612,2259,706],{"class":689},[612,2261,715],{"class":685},[612,2263,718],{"class":689},[612,2265,2266,2268,2270],{"class":670,"line":721},[612,2267,724],{"class":696},[612,2269,700],{"class":689},[612,2271,729],{"class":689},[612,2273,2274,2277,2279,2281,2283,2285,2287,2289,2291],{"class":670,"line":732},[612,2275,2276],{"class":696},"    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