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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.",[586,587,590,593,619],"prompt",{":actions":588,"description":589,"icon":69},"[\"copy\",\"cursor\",\"claude\"]","Enable head and tail sampling",[582,591,592],{},"Enable head and tail sampling in my evlog production config.",[594,595,596,600,603,610,613,616],"ul",{},[597,598,599],"li",{},"Identify my framework and locate the evlog config (nuxt.config.ts, lib\u002Fevlog.ts, initLogger, etc.)",[597,601,602],{},"Configure sampling.rates per level: { info: 10, warn: 50, debug: 0, error: 100 } as a starting point",[597,604,605,606],{},"Add sampling.keep rules to force-keep critical events: ",[607,608,609],"span",{},"{ status: 400 }, { duration: 1000 }, { path: '\u002Fapi\u002Fcritical\u002F**' }",[597,611,612],{},"For business-specific keep logic (e.g. premium users), add a custom keep callback or evlog:emit:keep hook",[597,614,615],{},"Wrap sampling in a $production override so dev keeps full logging",[597,617,618],{},"Confirm errors are always kept by default unless I explicitly set error: 0",[582,620,621,622,628,629],{},"Docs: ",[623,624,625],"a",{"href":625,"rel":626},"https:\u002F\u002Fwww.evlog.dev\u002Flearn\u002Fsampling",[627],"nofollow","\nBest practices: ",[623,630,631],{"href":631,"rel":632},"https:\u002F\u002Fwww.evlog.dev\u002Freference\u002Fbest-practices",[627],[634,635,637],"h2",{"id":636},"drop-noise-before-it-is-built","Drop noise before it is built",[582,639,640,641,645],{},"Head sampling randomly keeps a percentage of logs per level. It runs ",[642,643,644],"strong",{},"before"," the request completes, acting as a coin flip at emission time.",[647,648],"head-sampling-plinko",{},[650,651,652,839,998],"code-group",{},[653,654,660],"pre",{"className":655,"code":656,"filename":657,"language":658,"meta":659,"style":659},"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","",[661,662,663,686,714,725,735,745,764,780,796,812,818,824,830],"code",{"__ignoreMap":659},[607,664,667,671,674,678,682],{"class":665,"line":666},"line",1,[607,668,670],{"class":669},"s7zQu","export",[607,672,673],{"class":669}," default",[607,675,677],{"class":676},"s2Zo4"," defineNuxtConfig",[607,679,681],{"class":680},"sTEyZ","(",[607,683,685],{"class":684},"sMK4o","{\n",[607,687,689,693,696,699,702,706,708,711],{"class":665,"line":688},2,[607,690,692],{"class":691},"swJcz","  modules",[607,694,695],{"class":684},":",[607,697,698],{"class":680}," [",[607,700,701],{"class":684},"'",[607,703,705],{"class":704},"sfazB","evlog\u002Fnuxt",[607,707,701],{"class":684},[607,709,710],{"class":680},"]",[607,712,713],{"class":684},",\n",[607,715,717,720,722],{"class":665,"line":716},3,[607,718,719],{"class":691},"  evlog",[607,721,695],{"class":684},[607,723,724],{"class":684}," {\n",[607,726,728,731,733],{"class":665,"line":727},4,[607,729,730],{"class":691},"    sampling",[607,732,695],{"class":684},[607,734,724],{"class":684},[607,736,738,741,743],{"class":665,"line":737},5,[607,739,740],{"class":691},"      rates",[607,742,695],{"class":684},[607,744,724],{"class":684},[607,746,748,751,753,757,760],{"class":665,"line":747},6,[607,749,750],{"class":691},"        info",[607,752,695],{"class":684},[607,754,756],{"class":755},"sbssI"," 10",[607,758,759],{"class":684},",",[607,761,763],{"class":762},"sHwdD","    \u002F\u002F Keep 10% of info logs\n",[607,765,767,770,772,775,777],{"class":665,"line":766},7,[607,768,769],{"class":691},"        warn",[607,771,695],{"class":684},[607,773,774],{"class":755}," 50",[607,776,759],{"class":684},[607,778,779],{"class":762},"    \u002F\u002F Keep 50% of warnings\n",[607,781,783,786,788,791,793],{"class":665,"line":782},8,[607,784,785],{"class":691},"        debug",[607,787,695],{"class":684},[607,789,790],{"class":755}," 0",[607,792,759],{"class":684},[607,794,795],{"class":762},"    \u002F\u002F Drop all debug logs\n",[607,797,799,802,804,807,809],{"class":665,"line":798},9,[607,800,801],{"class":691},"        error",[607,803,695],{"class":684},[607,805,806],{"class":755}," 100",[607,808,759],{"class":684},[607,810,811],{"class":762},"  \u002F\u002F Always keep errors (default)\n",[607,813,815],{"class":665,"line":814},10,[607,816,817],{"class":684},"      },\n",[607,819,821],{"class":665,"line":820},11,[607,822,823],{"class":684},"    },\n",[607,825,827],{"class":665,"line":826},12,[607,828,829],{"class":684},"  },\n",[607,831,833,836],{"class":665,"line":832},13,[607,834,835],{"class":684},"}",[607,837,838],{"class":680},")\n",[653,840,843],{"className":655,"code":841,"filename":842,"language":658,"meta":659,"style":659},"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)",[661,844,845,871,877,906,922,931,940,951,962,973,984,988,992],{"__ignoreMap":659},[607,846,847,850,853,856,859,862,865,868],{"class":665,"line":666},[607,848,849],{"class":669},"import",[607,851,852],{"class":684}," {",[607,854,855],{"class":680}," createEvlog",[607,857,858],{"class":684}," }",[607,860,861],{"class":669}," from",[607,863,864],{"class":684}," '",[607,866,867],{"class":704},"evlog\u002Fnext",[607,869,870],{"class":684},"'\n",[607,872,873],{"class":665,"line":688},[607,874,876],{"emptyLinePlaceholder":875},true,"\n",[607,878,879,881,885,887,890,892,895,897,900,902,904],{"class":665,"line":716},[607,880,670],{"class":669},[607,882,884],{"class":883},"spNyl"," const",[607,886,852],{"class":684},[607,888,889],{"class":680}," withEvlog",[607,891,759],{"class":684},[607,893,894],{"class":680}," useLogger ",[607,896,835],{"class":684},[607,898,899],{"class":684}," =",[607,901,855],{"class":676},[607,903,681],{"class":680},[607,905,685],{"class":684},[607,907,908,911,913,915,918,920],{"class":665,"line":727},[607,909,910],{"class":691},"  service",[607,912,695],{"class":684},[607,914,864],{"class":684},[607,916,917],{"class":704},"my-app",[607,919,701],{"class":684},[607,921,713],{"class":684},[607,923,924,927,929],{"class":665,"line":737},[607,925,926],{"class":691},"  sampling",[607,928,695],{"class":684},[607,930,724],{"class":684},[607,932,933,936,938],{"class":665,"line":747},[607,934,935],{"class":691},"    rates",[607,937,695],{"class":684},[607,939,724],{"class":684},[607,941,942,945,947,949],{"class":665,"line":766},[607,943,944],{"class":691},"      info",[607,946,695],{"class":684},[607,948,756],{"class":755},[607,950,713],{"class":684},[607,952,953,956,958,960],{"class":665,"line":782},[607,954,955],{"class":691},"      warn",[607,957,695],{"class":684},[607,959,774],{"class":755},[607,961,713],{"class":684},[607,963,964,967,969,971],{"class":665,"line":798},[607,965,966],{"class":691},"      debug",[607,968,695],{"class":684},[607,970,790],{"class":755},[607,972,713],{"class":684},[607,974,975,978,980,982],{"class":665,"line":814},[607,976,977],{"class":691},"      error",[607,979,695],{"class":684},[607,981,806],{"class":755},[607,983,713],{"class":684},[607,985,986],{"class":665,"line":820},[607,987,823],{"class":684},[607,989,990],{"class":665,"line":826},[607,991,829],{"class":684},[607,993,994,996],{"class":665,"line":832},[607,995,835],{"class":684},[607,997,838],{"class":680},[653,999,1002],{"className":655,"code":1000,"filename":1001,"language":658,"meta":659,"style":659},"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)",[661,1003,1004,1024,1028,1037,1060,1068,1076,1086,1096,1106,1116,1120,1124],{"__ignoreMap":659},[607,1005,1006,1008,1010,1013,1015,1017,1019,1022],{"class":665,"line":666},[607,1007,849],{"class":669},[607,1009,852],{"class":684},[607,1011,1012],{"class":680}," initLogger",[607,1014,858],{"class":684},[607,1016,861],{"class":669},[607,1018,864],{"class":684},[607,1020,1021],{"class":704},"evlog",[607,1023,870],{"class":684},[607,1025,1026],{"class":665,"line":688},[607,1027,876],{"emptyLinePlaceholder":875},[607,1029,1030,1033,1035],{"class":665,"line":716},[607,1031,1032],{"class":676},"initLogger",[607,1034,681],{"class":680},[607,1036,685],{"class":684},[607,1038,1039,1042,1044,1046,1049,1051,1053,1055,1057],{"class":665,"line":727},[607,1040,1041],{"class":691},"  env",[607,1043,695],{"class":684},[607,1045,852],{"class":684},[607,1047,1048],{"class":691}," service",[607,1050,695],{"class":684},[607,1052,864],{"class":684},[607,1054,917],{"class":704},[607,1056,701],{"class":684},[607,1058,1059],{"class":684}," },\n",[607,1061,1062,1064,1066],{"class":665,"line":737},[607,1063,926],{"class":691},[607,1065,695],{"class":684},[607,1067,724],{"class":684},[607,1069,1070,1072,1074],{"class":665,"line":747},[607,1071,935],{"class":691},[607,1073,695],{"class":684},[607,1075,724],{"class":684},[607,1077,1078,1080,1082,1084],{"class":665,"line":766},[607,1079,944],{"class":691},[607,1081,695],{"class":684},[607,1083,756],{"class":755},[607,1085,713],{"class":684},[607,1087,1088,1090,1092,1094],{"class":665,"line":782},[607,1089,955],{"class":691},[607,1091,695],{"class":684},[607,1093,774],{"class":755},[607,1095,713],{"class":684},[607,1097,1098,1100,1102,1104],{"class":665,"line":798},[607,1099,966],{"class":691},[607,1101,695],{"class":684},[607,1103,790],{"class":755},[607,1105,713],{"class":684},[607,1107,1108,1110,1112,1114],{"class":665,"line":814},[607,1109,977],{"class":691},[607,1111,695],{"class":684},[607,1113,806],{"class":755},[607,1115,713],{"class":684},[607,1117,1118],{"class":665,"line":820},[607,1119,823],{"class":684},[607,1121,1122],{"class":665,"line":826},[607,1123,829],{"class":684},[607,1125,1126,1128],{"class":665,"line":832},[607,1127,835],{"class":684},[607,1129,838],{"class":680},[582,1131,1132,1133,1136],{},"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 ",[661,1134,1135],{},"error: 0"," to drop errors.",[1138,1139,1141,1142,1145],"callout",{"color":1140,"icon":13},"info","Head sampling is random. A ",[661,1143,1144],{},"10%"," rate means roughly 1 in 10 info logs are kept, not exactly 1 in 10.",[634,1147,1149],{"id":1148},"keep-an-event-once-you-know-its-outcome","Keep an event once you know its outcome",[582,1151,1152,1153,1156],{},"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 ",[642,1154,1155],{},"after"," the request completes and force-keeping logs that match specific conditions.",[653,1158,1160],{"className":655,"code":1159,"filename":657,"language":658,"meta":659,"style":659},"\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",[661,1161,1162,1167,1176,1184,1201,1211,1230,1247,1268,1275,1279],{"__ignoreMap":659},[607,1163,1164],{"class":665,"line":666},[607,1165,1166],{"class":762},"\u002F\u002F Sampling config, works the same across all frameworks\n",[607,1168,1169,1172,1174],{"class":665,"line":688},[607,1170,1021],{"class":1171},"sBMFI",[607,1173,695],{"class":684},[607,1175,724],{"class":684},[607,1177,1178,1180,1182],{"class":665,"line":716},[607,1179,926],{"class":1171},[607,1181,695],{"class":684},[607,1183,724],{"class":684},[607,1185,1186,1188,1190,1192,1195,1197,1199],{"class":665,"line":727},[607,1187,935],{"class":1171},[607,1189,695],{"class":684},[607,1191,852],{"class":684},[607,1193,1194],{"class":1171}," info",[607,1196,695],{"class":684},[607,1198,756],{"class":755},[607,1200,1059],{"class":684},[607,1202,1203,1206,1208],{"class":665,"line":737},[607,1204,1205],{"class":1171},"    keep",[607,1207,695],{"class":684},[607,1209,1210],{"class":691}," [\n",[607,1212,1213,1216,1219,1221,1224,1227],{"class":665,"line":747},[607,1214,1215],{"class":684},"      {",[607,1217,1218],{"class":691}," status",[607,1220,695],{"class":684},[607,1222,1223],{"class":755}," 400",[607,1225,1226],{"class":684}," },",[607,1228,1229],{"class":762},"              \u002F\u002F HTTP status >= 400\n",[607,1231,1232,1234,1237,1239,1242,1244],{"class":665,"line":766},[607,1233,1215],{"class":684},[607,1235,1236],{"class":691}," duration",[607,1238,695],{"class":684},[607,1240,1241],{"class":755}," 1000",[607,1243,1226],{"class":684},[607,1245,1246],{"class":762},"           \u002F\u002F Request took >= 1s\n",[607,1248,1249,1251,1254,1256,1258,1261,1263,1265],{"class":665,"line":782},[607,1250,1215],{"class":684},[607,1252,1253],{"class":691}," path",[607,1255,695],{"class":684},[607,1257,864],{"class":684},[607,1259,1260],{"class":704},"\u002Fapi\u002Fpayments\u002F**",[607,1262,701],{"class":684},[607,1264,1226],{"class":684},[607,1266,1267],{"class":762}," \u002F\u002F Critical path (glob)\n",[607,1269,1270,1273],{"class":665,"line":798},[607,1271,1272],{"class":691},"    ]",[607,1274,713],{"class":684},[607,1276,1277],{"class":665,"line":814},[607,1278,829],{"class":684},[607,1280,1281],{"class":665,"line":820},[607,1282,1283],{"class":684},"}\n",[582,1285,1286,1287,1290,1291,1294,1295,1298,1299,1302,1303,1306],{},"Conditions use ",[642,1288,1289],{},">="," comparison for ",[661,1292,1293],{},"status"," and ",[661,1296,1297],{},"duration",", and glob matching for ",[661,1300,1301],{},"path",". If ",[642,1304,1305],{},"any"," condition matches, the log is kept regardless of head sampling (OR logic).",[1308,1309,1311],"h3",{"id":1310},"conditions-you-can-match-on","Conditions you can match on",[1313,1314,1315,1331],"table",{},[1316,1317,1318],"thead",{},[1319,1320,1321,1325,1328],"tr",{},[1322,1323,1324],"th",{},"Condition",[1322,1326,1327],{},"Type",[1322,1329,1330],{},"Description",[1332,1333,1334,1353,1366],"tbody",{},[1319,1335,1336,1341,1346],{},[1337,1338,1339],"td",{},[661,1340,1293],{},[1337,1342,1343],{},[661,1344,1345],{},"number",[1337,1347,1348,1349,1352],{},"Keep if HTTP status >= value (e.g., ",[661,1350,1351],{},"400"," catches all 4xx and 5xx)",[1319,1354,1355,1359,1363],{},[1337,1356,1357],{},[661,1358,1297],{},[1337,1360,1361],{},[661,1362,1345],{},[1337,1364,1365],{},"Keep if request duration >= value in milliseconds",[1319,1367,1368,1372,1377],{},[1337,1369,1370],{},[661,1371,1301],{},[1337,1373,1374],{},[661,1375,1376],{},"string",[1337,1378,1379,1380,1383],{},"Keep if request path matches glob pattern (e.g., ",[661,1381,1382],{},"'\u002Fapi\u002Fcritical\u002F**'",")",[634,1385,1387],{"id":1386},"combine-head-and-tail-sampling","Combine head and tail sampling",[582,1389,1390],{},"The two tiers complement each other:",[1392,1393,1394,1400,1410,1416],"ol",{},[597,1395,1396,1399],{},[642,1397,1398],{},"Request completes"," - evlog knows the status, duration, and path",[597,1401,1402,1405,1406,1409],{},[642,1403,1404],{},"Tail sampling evaluates"," - if any ",[661,1407,1408],{},"keep"," condition matches, the log is force-kept",[597,1411,1412,1415],{},[642,1413,1414],{},"Head sampling applies"," - only if tail sampling didn't force-keep, the random percentage check runs",[597,1417,1418,1421],{},[642,1419,1420],{},"Log emits or drops"," - kept logs go through enrichment and draining as normal",[582,1423,1424,1425,1428,1429,1431],{},"This means a request to ",[661,1426,1427],{},"\u002Fapi\u002Fpayments\u002Fcharge"," that returns a 500 in 2 seconds will always be logged, even if ",[661,1430,1140],{}," is set to 1%. The tail conditions rescue it.",[1433,1434],"tail-sample-decision",{},[650,1436,1437,1513],{},[653,1438,1440],{"className":655,"code":1439,"filename":521,"language":658,"meta":659,"style":659},"sampling: {\n  rates: { info: 10 },\n  keep: [\n    { status: 400 },\n    { duration: 1000 },\n  ],\n}\n",[661,1441,1442,1451,1468,1477,1490,1502,1509],{"__ignoreMap":659},[607,1443,1444,1447,1449],{"class":665,"line":666},[607,1445,1446],{"class":1171},"sampling",[607,1448,695],{"class":684},[607,1450,724],{"class":684},[607,1452,1453,1456,1458,1460,1462,1464,1466],{"class":665,"line":688},[607,1454,1455],{"class":1171},"  rates",[607,1457,695],{"class":684},[607,1459,852],{"class":684},[607,1461,1194],{"class":1171},[607,1463,695],{"class":684},[607,1465,756],{"class":755},[607,1467,1059],{"class":684},[607,1469,1470,1473,1475],{"class":665,"line":716},[607,1471,1472],{"class":1171},"  keep",[607,1474,695],{"class":684},[607,1476,1210],{"class":691},[607,1478,1479,1482,1484,1486,1488],{"class":665,"line":727},[607,1480,1481],{"class":684},"    {",[607,1483,1218],{"class":691},[607,1485,695],{"class":684},[607,1487,1223],{"class":755},[607,1489,1059],{"class":684},[607,1491,1492,1494,1496,1498,1500],{"class":665,"line":737},[607,1493,1481],{"class":684},[607,1495,1236],{"class":691},[607,1497,695],{"class":684},[607,1499,1241],{"class":755},[607,1501,1059],{"class":684},[607,1503,1504,1507],{"class":665,"line":747},[607,1505,1506],{"class":691},"  ]",[607,1508,713],{"class":684},[607,1510,1511],{"class":665,"line":766},[607,1512,1283],{"class":684},[653,1514,1519],{"className":1515,"code":1516,"filename":1517,"language":1518,"meta":659,"style":659},"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",[661,1520,1521,1551,1583,1615],{"__ignoreMap":659},[607,1522,1523,1526,1529,1532,1535,1538,1541,1544,1547,1549],{"class":665,"line":666},[607,1524,1525],{"class":1171},"POST",[607,1527,1528],{"class":704}," \u002Fapi\u002Fusers",[607,1530,1531],{"class":755},"     200",[607,1533,1534],{"class":704},"  45ms",[607,1536,1537],{"class":704},"   →",[607,1539,1540],{"class":704}," 10%",[607,1542,1543],{"class":704}," chance",[607,1545,1546],{"class":680}," (head ",[607,1548,1446],{"class":704},[607,1550,838],{"class":680},[607,1552,1553,1555,1557,1560,1562,1564,1567,1570,1573,1576,1579,1581],{"class":665,"line":688},[607,1554,1525],{"class":1171},[607,1556,1528],{"class":704},[607,1558,1559],{"class":755},"     500",[607,1561,1534],{"class":704},[607,1563,1537],{"class":704},[607,1565,1566],{"class":704}," always",[607,1568,1569],{"class":704}," kept",[607,1571,1572],{"class":680}," (status ",[607,1574,1575],{"class":684},">",[607,1577,1578],{"class":704},"=",[607,1580,1223],{"class":755},[607,1582,838],{"class":680},[607,1584,1585,1588,1591,1594,1597,1600,1602,1604,1607,1609,1611,1613],{"class":665,"line":716},[607,1586,1587],{"class":1171},"GET",[607,1589,1590],{"class":704},"  \u002Fapi\u002Fproducts",[607,1592,1593],{"class":755},"  200",[607,1595,1596],{"class":704},"  2300ms",[607,1598,1599],{"class":704}," →",[607,1601,1566],{"class":704},[607,1603,1569],{"class":704},[607,1605,1606],{"class":680}," (duration ",[607,1608,1575],{"class":684},[607,1610,1578],{"class":704},[607,1612,1241],{"class":755},[607,1614,838],{"class":680},[607,1616,1617,1619,1622,1624,1627,1630,1632,1634,1636,1638],{"class":665,"line":727},[607,1618,1525],{"class":1171},[607,1620,1621],{"class":704}," \u002Fapi\u002Fcheckout",[607,1623,1593],{"class":755},[607,1625,1626],{"class":704},"  120ms",[607,1628,1629],{"class":704},"  →",[607,1631,1540],{"class":704},[607,1633,1543],{"class":704},[607,1635,1546],{"class":680},[607,1637,1446],{"class":704},[607,1639,838],{"class":680},[634,1641,1643],{"id":1642},"write-your-own-keep-rule","Write your own keep rule",[582,1645,1646,1647,1650,1651,1653],{},"For conditions beyond status, duration, and path, use the ",[661,1648,1649],{},"evlog:emit:keep"," hook in Nuxt\u002FNitro or the ",[661,1652,1408],{}," callback in other frameworks.",[650,1655,1656,1798,1985],{},[653,1657,1660],{"className":655,"code":1658,"filename":1659,"language":658,"meta":659,"style":659},"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)",[661,1661,1662,1686,1724,1764,1780,1785,1792],{"__ignoreMap":659},[607,1663,1664,1666,1668,1671,1673,1675,1679,1681,1684],{"class":665,"line":666},[607,1665,670],{"class":669},[607,1667,673],{"class":669},[607,1669,1670],{"class":676}," defineNitroPlugin",[607,1672,681],{"class":680},[607,1674,681],{"class":684},[607,1676,1678],{"class":1677},"sHdIc","nitroApp",[607,1680,1383],{"class":684},[607,1682,1683],{"class":883}," =>",[607,1685,724],{"class":684},[607,1687,1688,1691,1694,1697,1699,1702,1704,1706,1708,1710,1712,1715,1718,1720,1722],{"class":665,"line":688},[607,1689,1690],{"class":680},"  nitroApp",[607,1692,1693],{"class":684},".",[607,1695,1696],{"class":680},"hooks",[607,1698,1693],{"class":684},[607,1700,1701],{"class":676},"hook",[607,1703,681],{"class":691},[607,1705,701],{"class":684},[607,1707,1649],{"class":704},[607,1709,701],{"class":684},[607,1711,759],{"class":684},[607,1713,1714],{"class":684}," (",[607,1716,1717],{"class":1677},"ctx",[607,1719,1383],{"class":684},[607,1721,1683],{"class":883},[607,1723,724],{"class":684},[607,1725,1726,1729,1731,1733,1735,1738,1740,1743,1746,1749,1752,1754,1757,1759,1762],{"class":665,"line":716},[607,1727,1728],{"class":669},"    if",[607,1730,1714],{"class":691},[607,1732,1717],{"class":680},[607,1734,1693],{"class":684},[607,1736,1737],{"class":680},"context",[607,1739,1693],{"class":684},[607,1741,1742],{"class":680},"user",[607,1744,1745],{"class":684},"?.",[607,1747,1748],{"class":680},"plan",[607,1750,1751],{"class":684}," ===",[607,1753,864],{"class":684},[607,1755,1756],{"class":704},"enterprise",[607,1758,701],{"class":684},[607,1760,1761],{"class":691},") ",[607,1763,685],{"class":684},[607,1765,1766,1769,1771,1774,1776],{"class":665,"line":727},[607,1767,1768],{"class":680},"      ctx",[607,1770,1693],{"class":684},[607,1772,1773],{"class":680},"shouldKeep",[607,1775,899],{"class":684},[607,1777,1779],{"class":1778},"sfNiH"," true\n",[607,1781,1782],{"class":665,"line":737},[607,1783,1784],{"class":684},"    }\n",[607,1786,1787,1790],{"class":665,"line":747},[607,1788,1789],{"class":684},"  }",[607,1791,838],{"class":691},[607,1793,1794,1796],{"class":665,"line":766},[607,1795,835],{"class":684},[607,1797,838],{"class":680},[653,1799,1801],{"className":655,"code":1800,"filename":842,"language":658,"meta":659,"style":659},"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",[661,1802,1803,1821,1825,1849,1863,1871,1887,1910,1914,1926,1958,1970,1974,1978],{"__ignoreMap":659},[607,1804,1805,1807,1809,1811,1813,1815,1817,1819],{"class":665,"line":666},[607,1806,849],{"class":669},[607,1808,852],{"class":684},[607,1810,855],{"class":680},[607,1812,858],{"class":684},[607,1814,861],{"class":669},[607,1816,864],{"class":684},[607,1818,867],{"class":704},[607,1820,870],{"class":684},[607,1822,1823],{"class":665,"line":688},[607,1824,876],{"emptyLinePlaceholder":875},[607,1826,1827,1829,1831,1833,1835,1837,1839,1841,1843,1845,1847],{"class":665,"line":716},[607,1828,670],{"class":669},[607,1830,884],{"class":883},[607,1832,852],{"class":684},[607,1834,889],{"class":680},[607,1836,759],{"class":684},[607,1838,894],{"class":680},[607,1840,835],{"class":684},[607,1842,899],{"class":684},[607,1844,855],{"class":676},[607,1846,681],{"class":680},[607,1848,685],{"class":684},[607,1850,1851,1853,1855,1857,1859,1861],{"class":665,"line":727},[607,1852,910],{"class":691},[607,1854,695],{"class":684},[607,1856,864],{"class":684},[607,1858,917],{"class":704},[607,1860,701],{"class":684},[607,1862,713],{"class":684},[607,1864,1865,1867,1869],{"class":665,"line":737},[607,1866,926],{"class":691},[607,1868,695],{"class":684},[607,1870,724],{"class":684},[607,1872,1873,1875,1877,1879,1881,1883,1885],{"class":665,"line":747},[607,1874,935],{"class":691},[607,1876,695],{"class":684},[607,1878,852],{"class":684},[607,1880,1194],{"class":691},[607,1882,695],{"class":684},[607,1884,756],{"class":755},[607,1886,1059],{"class":684},[607,1888,1889,1891,1893,1895,1898,1900,1902,1904,1906,1908],{"class":665,"line":766},[607,1890,1205],{"class":691},[607,1892,695],{"class":684},[607,1894,698],{"class":680},[607,1896,1897],{"class":684},"{",[607,1899,1218],{"class":691},[607,1901,695],{"class":684},[607,1903,1223],{"class":755},[607,1905,858],{"class":684},[607,1907,710],{"class":680},[607,1909,713],{"class":684},[607,1911,1912],{"class":665,"line":782},[607,1913,829],{"class":684},[607,1915,1916,1918,1920,1922,1924],{"class":665,"line":798},[607,1917,1472],{"class":691},[607,1919,681],{"class":684},[607,1921,1717],{"class":1677},[607,1923,1383],{"class":684},[607,1925,724],{"class":684},[607,1927,1928,1930,1932,1934,1936,1938,1940,1942,1944,1946,1948,1950,1952,1954,1956],{"class":665,"line":814},[607,1929,1728],{"class":669},[607,1931,1714],{"class":691},[607,1933,1717],{"class":680},[607,1935,1693],{"class":684},[607,1937,1737],{"class":680},[607,1939,1693],{"class":684},[607,1941,1742],{"class":680},[607,1943,1745],{"class":684},[607,1945,1748],{"class":680},[607,1947,1751],{"class":684},[607,1949,864],{"class":684},[607,1951,1756],{"class":704},[607,1953,701],{"class":684},[607,1955,1761],{"class":691},[607,1957,685],{"class":684},[607,1959,1960,1962,1964,1966,1968],{"class":665,"line":820},[607,1961,1768],{"class":680},[607,1963,1693],{"class":684},[607,1965,1773],{"class":680},[607,1967,899],{"class":684},[607,1969,1779],{"class":1778},[607,1971,1972],{"class":665,"line":826},[607,1973,1784],{"class":684},[607,1975,1976],{"class":665,"line":832},[607,1977,829],{"class":684},[607,1979,1981,1983],{"class":665,"line":1980},14,[607,1982,835],{"class":684},[607,1984,838],{"class":680},[653,1986,1989],{"className":655,"code":1987,"filename":1988,"language":658,"meta":659,"style":659},"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)",[661,1990,1991,2011,2015,2033,2045,2077,2089,2093,2097],{"__ignoreMap":659},[607,1992,1993,1995,1997,2000,2002,2004,2006,2009],{"class":665,"line":666},[607,1994,849],{"class":669},[607,1996,852],{"class":684},[607,1998,1999],{"class":680}," evlog",[607,2001,858],{"class":684},[607,2003,861],{"class":669},[607,2005,864],{"class":684},[607,2007,2008],{"class":704},"evlog\u002Fhono",[607,2010,870],{"class":684},[607,2012,2013],{"class":665,"line":688},[607,2014,876],{"emptyLinePlaceholder":875},[607,2016,2017,2020,2022,2025,2027,2029,2031],{"class":665,"line":716},[607,2018,2019],{"class":680},"app",[607,2021,1693],{"class":684},[607,2023,2024],{"class":676},"use",[607,2026,681],{"class":680},[607,2028,1021],{"class":676},[607,2030,681],{"class":680},[607,2032,685],{"class":684},[607,2034,2035,2037,2039,2041,2043],{"class":665,"line":727},[607,2036,1472],{"class":691},[607,2038,681],{"class":684},[607,2040,1717],{"class":1677},[607,2042,1383],{"class":684},[607,2044,724],{"class":684},[607,2046,2047,2049,2051,2053,2055,2057,2059,2061,2063,2065,2067,2069,2071,2073,2075],{"class":665,"line":737},[607,2048,1728],{"class":669},[607,2050,1714],{"class":691},[607,2052,1717],{"class":680},[607,2054,1693],{"class":684},[607,2056,1737],{"class":680},[607,2058,1693],{"class":684},[607,2060,1742],{"class":680},[607,2062,1745],{"class":684},[607,2064,1748],{"class":680},[607,2066,1751],{"class":684},[607,2068,864],{"class":684},[607,2070,1756],{"class":704},[607,2072,701],{"class":684},[607,2074,1761],{"class":691},[607,2076,685],{"class":684},[607,2078,2079,2081,2083,2085,2087],{"class":665,"line":747},[607,2080,1768],{"class":680},[607,2082,1693],{"class":684},[607,2084,1773],{"class":680},[607,2086,899],{"class":684},[607,2088,1779],{"class":1778},[607,2090,2091],{"class":665,"line":766},[607,2092,1784],{"class":684},[607,2094,2095],{"class":665,"line":782},[607,2096,829],{"class":684},[607,2098,2099,2101],{"class":665,"line":798},[607,2100,835],{"class":684},[607,2102,2103],{"class":680},"))\n",[582,2105,2106,2107,2109],{},"The ",[661,2108,1717],{}," object contains:",[1313,2111,2112,2123],{},[1316,2113,2114],{},[1319,2115,2116,2119,2121],{},[1322,2117,2118],{},"Field",[1322,2120,1327],{},[1322,2122,1330],{},[1332,2124,2125,2139,2152,2166,2180,2197],{},[1319,2126,2127,2131,2136],{},[1337,2128,2129],{},[661,2130,1293],{},[1337,2132,2133],{},[661,2134,2135],{},"number | undefined",[1337,2137,2138],{},"HTTP response status",[1319,2140,2141,2145,2149],{},[1337,2142,2143],{},[661,2144,1297],{},[1337,2146,2147],{},[661,2148,2135],{},[1337,2150,2151],{},"Request duration in ms",[1319,2153,2154,2158,2163],{},[1337,2155,2156],{},[661,2157,1301],{},[1337,2159,2160],{},[661,2161,2162],{},"string | undefined",[1337,2164,2165],{},"Request path",[1319,2167,2168,2173,2177],{},[1337,2169,2170],{},[661,2171,2172],{},"method",[1337,2174,2175],{},[661,2176,2162],{},[1337,2178,2179],{},"HTTP method",[1319,2181,2182,2186,2191],{},[1337,2183,2184],{},[661,2185,1737],{},[1337,2187,2188],{},[661,2189,2190],{},"Record\u003Cstring, unknown>",[1337,2192,2193,2194],{},"All fields set via ",[661,2195,2196],{},"log.set()",[1319,2198,2199,2203,2208],{},[1337,2200,2201],{},[661,2202,1773],{},[1337,2204,2205],{},[661,2206,2207],{},"boolean",[1337,2209,2210,2211,2214],{},"Set to ",[661,2212,2213],{},"true"," to force-keep",[634,2216,2218],{"id":2217},"a-configuration-that-ships","A configuration that ships",[582,2220,2221],{},"A typical production configuration that balances cost and visibility:",[650,2223,2224,2479,2684],{},[653,2225,2227],{"className":655,"code":2226,"filename":657,"language":658,"meta":659,"style":659},"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",[661,2228,2229,2241,2259,2267,2288,2292,2301,2310,2319,2328,2339,2350,2361,2372,2377,2387,2401,2414,2431,2449,2457,2462,2467,2472],{"__ignoreMap":659},[607,2230,2231,2233,2235,2237,2239],{"class":665,"line":666},[607,2232,670],{"class":669},[607,2234,673],{"class":669},[607,2236,677],{"class":676},[607,2238,681],{"class":680},[607,2240,685],{"class":684},[607,2242,2243,2245,2247,2249,2251,2253,2255,2257],{"class":665,"line":688},[607,2244,692],{"class":691},[607,2246,695],{"class":684},[607,2248,698],{"class":680},[607,2250,701],{"class":684},[607,2252,705],{"class":704},[607,2254,701],{"class":684},[607,2256,710],{"class":680},[607,2258,713],{"class":684},[607,2260,2261,2263,2265],{"class":665,"line":716},[607,2262,719],{"class":691},[607,2264,695],{"class":684},[607,2266,724],{"class":684},[607,2268,2269,2272,2274,2276,2278,2280,2282,2284,2286],{"class":665,"line":727},[607,2270,2271],{"class":691},"    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