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It resolves the session, calls ",[520,690,525],{},", captures timing into ",[520,693,694],{},"auth.resolvedIn",", fires lifecycle hooks, and silently catches errors so session resolution never breaks a request.",[697,698,321],"h2",{"id":699},"options",[517,701,702,703,710],{},"Inherits all ",[704,705,707,709],"a",{"href":706},"\u002Fuse-cases\u002Fbetter-auth\u002Fidentify-user#options",[520,708,525],{}," options",", plus:",[712,713,714,733],"table",{},[715,716,717],"thead",{},[718,719,720,724,727,730],"tr",{},[721,722,723],"th",{},"Option",[721,725,726],{},"Type",[721,728,729],{},"Default",[721,731,732],{},"Description",[734,735,736,757,776,795],"tbody",{},[718,737,738,744,749,754],{},[739,740,741],"td",{},[520,742,743],{},"exclude",[739,745,746],{},[520,747,748],{},"string[]",[739,750,751],{},[520,752,753],{},"['\u002Fapi\u002Fauth\u002F**']",[739,755,756],{},"Route patterns to skip (glob).",[718,758,759,764,768,773],{},[739,760,761],{},[520,762,763],{},"include",[739,765,766],{},[520,767,748],{},[739,769,770],{},[520,771,772],{},"undefined",[739,774,775],{},"If set, only matching routes are resolved.",[718,777,778,783,788,792],{},[739,779,780],{},[520,781,782],{},"onIdentify",[739,784,785],{},[520,786,787],{},"(log, session) => void",[739,789,790],{},[520,791,772],{},[739,793,794],{},"Called after successful identification.",[718,796,797,802,807,811],{},[739,798,799],{},[520,800,801],{},"onAnonymous",[739,803,804],{},[520,805,806],{},"(log) => void",[739,808,809],{},[520,810,772],{},[739,812,813],{},"Called when no session is found.",[697,815,817],{"id":816},"route-filtering","Route Filtering",[517,819,820],{},"Skip Better Auth's own routes and any public endpoints to avoid wasted database queries:",[528,822,824],{"className":530,"code":823,"language":533,"meta":534,"style":534},"const identify = createAuthMiddleware(auth, {\n  exclude: [\n    '\u002Fapi\u002Fauth\u002F**',     \u002F\u002F Better Auth itself\n    '\u002Fapi\u002Fpublic\u002F**',   \u002F\u002F Public endpoints\n    '\u002Fapi\u002Fhealth',      \u002F\u002F Health checks\n  ],\n})\n",[520,825,826,842,851,866,879,893,900],{"__ignoreMap":534},[538,827,828,830,832,834,836,838,840],{"class":540,"line":541},[538,829,583],{"class":582},[538,831,586],{"class":552},[538,833,589],{"class":548},[538,835,553],{"class":592},[538,837,595],{"class":552},[538,839,598],{"class":548},[538,841,601],{"class":548},[538,843,844,846,848],{"class":540,"line":572},[538,845,608],{"class":607},[538,847,611],{"class":548},[538,849,850],{"class":552}," [\n",[538,852,853,856,858,860,862],{"class":540,"line":579},[538,854,855],{"class":548},"    '",[538,857,620],{"class":565},[538,859,617],{"class":548},[538,861,598],{"class":548},[538,863,865],{"class":864},"sHwdD","     \u002F\u002F Better Auth itself\n",[538,867,868,870,872,874,876],{"class":540,"line":604},[538,869,855],{"class":548},[538,871,629],{"class":565},[538,873,617],{"class":548},[538,875,598],{"class":548},[538,877,878],{"class":864},"   \u002F\u002F Public endpoints\n",[538,880,881,883,886,888,890],{"class":540,"line":640},[538,882,855],{"class":548},[538,884,885],{"class":565},"\u002Fapi\u002Fhealth",[538,887,617],{"class":548},[538,889,598],{"class":548},[538,891,892],{"class":864},"      \u002F\u002F Health checks\n",[538,894,895,898],{"class":540,"line":661},[538,896,897],{"class":552},"  ]",[538,899,637],{"class":548},[538,901,902,904],{"class":540,"line":675},[538,903,678],{"class":548},[538,905,681],{"class":552},[517,907,908],{},"For high-traffic apps, flip the model — only resolve sessions on routes that need them:",[528,910,912],{"className":530,"code":911,"language":533,"meta":534,"style":534},"const identify = createAuthMiddleware(auth, {\n  include: ['\u002Fapi\u002Fdashboard\u002F**', '\u002Fapi\u002Faccount\u002F**'],\n})\n",[520,913,914,930,958],{"__ignoreMap":534},[538,915,916,918,920,922,924,926,928],{"class":540,"line":541},[538,917,583],{"class":582},[538,919,586],{"class":552},[538,921,589],{"class":548},[538,923,553],{"class":592},[538,925,595],{"class":552},[538,927,598],{"class":548},[538,929,601],{"class":548},[538,931,932,934,936,938,940,943,945,947,949,952,954,956],{"class":540,"line":572},[538,933,643],{"class":607},[538,935,611],{"class":548},[538,937,614],{"class":552},[538,939,617],{"class":548},[538,941,942],{"class":565},"\u002Fapi\u002Fdashboard\u002F**",[538,944,617],{"class":548},[538,946,598],{"class":548},[538,948,562],{"class":548},[538,950,951],{"class":565},"\u002Fapi\u002Faccount\u002F**",[538,953,617],{"class":548},[538,955,634],{"class":552},[538,957,637],{"class":548},[538,959,960,962],{"class":540,"line":579},[538,961,678],{"class":548},[538,963,681],{"class":552},[517,965,966,968,969,971,972,975,976,979,980,982,983,985],{},[520,967,763],{}," and ",[520,970,743],{}," use glob patterns (",[520,973,974],{},"*",", ",[520,977,978],{},"**","). Provide both if you need granular control — ",[520,981,743],{}," wins over ",[520,984,763],{},".",[697,987,989],{"id":988},"lifecycle-hooks","Lifecycle Hooks",[517,991,992,993,995],{},"Use ",[520,994,782],{}," to react to user identification — for example, force-keep logs for premium users via tail sampling:",[528,997,999],{"className":530,"code":998,"filename":532,"language":533,"meta":534,"style":534},"const identify = createAuthMiddleware(auth, {\n  onIdentify: (log, session) => {\n    if (session.user.plan === 'enterprise') {\n      log.set({ _forceKeep: true })\n    }\n  },\n  onAnonymous: (log) => {\n    log.set({ anonymous: true })\n  },\n})\n",[520,1000,1001,1017,1044,1080,1107,1112,1117,1134,1159,1164],{"__ignoreMap":534},[538,1002,1003,1005,1007,1009,1011,1013,1015],{"class":540,"line":541},[538,1004,583],{"class":582},[538,1006,586],{"class":552},[538,1008,589],{"class":548},[538,1010,553],{"class":592},[538,1012,595],{"class":552},[538,1014,598],{"class":548},[538,1016,601],{"class":548},[538,1018,1019,1022,1024,1027,1031,1033,1036,1039,1042],{"class":540,"line":572},[538,1020,1021],{"class":592},"  onIdentify",[538,1023,611],{"class":548},[538,1025,1026],{"class":548}," (",[538,1028,1030],{"class":1029},"sHdIc","log",[538,1032,598],{"class":548},[538,1034,1035],{"class":1029}," session",[538,1037,1038],{"class":548},")",[538,1040,1041],{"class":582}," =>",[538,1043,601],{"class":548},[538,1045,1046,1049,1051,1054,1056,1059,1061,1064,1067,1069,1072,1074,1077],{"class":540,"line":579},[538,1047,1048],{"class":544},"    if",[538,1050,1026],{"class":607},[538,1052,1053],{"class":552},"session",[538,1055,985],{"class":548},[538,1057,1058],{"class":552},"user",[538,1060,985],{"class":548},[538,1062,1063],{"class":552},"plan",[538,1065,1066],{"class":548}," ===",[538,1068,562],{"class":548},[538,1070,1071],{"class":565},"enterprise",[538,1073,617],{"class":548},[538,1075,1076],{"class":607},") ",[538,1078,1079],{"class":548},"{\n",[538,1081,1082,1085,1087,1090,1093,1096,1099,1101,1103,1105],{"class":540,"line":604},[538,1083,1084],{"class":552},"      log",[538,1086,985],{"class":548},[538,1088,1089],{"class":592},"set",[538,1091,1092],{"class":607},"(",[538,1094,1095],{"class":548},"{",[538,1097,1098],{"class":607}," _forceKeep",[538,1100,611],{"class":548},[538,1102,670],{"class":669},[538,1104,556],{"class":548},[538,1106,681],{"class":607},[538,1108,1109],{"class":540,"line":640},[538,1110,1111],{"class":548},"    }\n",[538,1113,1114],{"class":540,"line":661},[538,1115,1116],{"class":548},"  },\n",[538,1118,1119,1122,1124,1126,1128,1130,1132],{"class":540,"line":675},[538,1120,1121],{"class":592},"  onAnonymous",[538,1123,611],{"class":548},[538,1125,1026],{"class":548},[538,1127,1030],{"class":1029},[538,1129,1038],{"class":548},[538,1131,1041],{"class":582},[538,1133,601],{"class":548},[538,1135,1137,1140,1142,1144,1146,1148,1151,1153,1155,1157],{"class":540,"line":1136},8,[538,1138,1139],{"class":552},"    log",[538,1141,985],{"class":548},[538,1143,1089],{"class":592},[538,1145,1092],{"class":607},[538,1147,1095],{"class":548},[538,1149,1150],{"class":607}," anonymous",[538,1152,611],{"class":548},[538,1154,670],{"class":669},[538,1156,556],{"class":548},[538,1158,681],{"class":607},[538,1160,1162],{"class":540,"line":1161},9,[538,1163,1116],{"class":548},[538,1165,1167,1169],{"class":540,"line":1166},10,[538,1168,678],{"class":548},[538,1170,681],{"class":552},[517,1172,1173,1174,1176,1177,1179,1180,1182],{},"Hooks fire after the session is resolved and ",[520,1175,525],{}," has set its fields. They run on every request that passes the ",[520,1178,763],{},"\u002F",[520,1181,743],{}," filter, so keep them fast and side-effect-free.",[1184,1185,1186,1191],"tip",{},[517,1187,1188,1189,611],{},"Common patterns for ",[520,1190,782],{},[1192,1193,1194,1198,1201],"ul",{},[1195,1196,1197],"li",{},"Force-keep audit logs for admins or high-value plans.",[1195,1199,1200],{},"Tag the request with feature flags or tenant info loaded from the session.",[1195,1202,1203],{},"Increment a per-user counter for billing.",[697,1205,1207],{"id":1206},"error-handling","Error Handling",[517,1209,1210,1211,1214,1215,968,1217,1220],{},"The middleware catches every error from ",[520,1212,1213],{},"getSession"," and logs nothing — your request keeps flowing whether the auth backend is up or down. 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Call it once at startup and reuse across requests.","md",[1234,1237],{"label":345,"icon":348,"to":346,"color":1235,"variant":1236},"neutral","subtle",{"label":359,"icon":107,"to":360,"color":1235,"variant":1236},{},{"title":350,"icon":353},{"title":512,"description":1231},"jrR5gM4N47j96nisEwXGF_GTGeo8G3av0oISM0JNjLA",[1243,1245],{"title":345,"path":346,"stem":347,"description":1244,"icon":348,"children":-1},"The core building block — extract safe user fields, mask emails, and capture plugin data (organizations, roles, 2FA) from a Better Auth session.",{"title":355,"path":356,"stem":357,"description":1246,"icon":305,"children":-1},"Mirror the server-side user identity into client-side logs by watching the Better Auth session and calling setIdentity.",1785599598455]