[{"data":1,"prerenderedAt":961},["ShallowReactive",2],{"navigation_docs":3,"-extend-identity-headers":451,"-extend-identity-headers-surround":956},[4,30,80,245,365,420],{"title":5,"path":6,"stem":7,"children":8,"page":29},"Start","\u002Fstart","1.start",[9,14,19,24],{"title":10,"path":11,"stem":12,"icon":13},"Introduction","\u002Fstart\u002Fintroduction","1.start\u002F1.introduction","i-lucide-info",{"title":15,"path":16,"stem":17,"icon":18},"Why start with evlog","\u002Fstart\u002Fwhy-evlog","1.start\u002F2.why-evlog","i-lucide-rocket",{"title":20,"path":21,"stem":22,"icon":23},"Installation","\u002Fstart\u002Finstallation","1.start\u002F3.installation","i-lucide-download",{"title":25,"path":26,"stem":27,"icon":28},"Quick Start","\u002Fstart\u002Fquick-start","1.start\u002F4.quick-start","i-lucide-zap",false,{"title":31,"path":32,"stem":33,"children":34,"page":29},"Learn","\u002Flearn","2.learn",[35,40,45,50,55,60,65,70,75],{"title":36,"path":37,"stem":38,"icon":39},"Overview","\u002Flearn\u002Foverview","2.learn\u002F0.overview","i-lucide-list",{"title":41,"path":42,"stem":43,"icon":44},"Simple Logging","\u002Flearn\u002Fsimple-logging","2.learn\u002F1.simple-logging","i-lucide-terminal",{"title":46,"path":47,"stem":48,"icon":49},"Wide Events","\u002Flearn\u002Fwide-events","2.learn\u002F2.wide-events","i-lucide-layers",{"title":51,"path":52,"stem":53,"icon":54},"Structured Errors","\u002Flearn\u002Fstructured-errors","2.learn\u002F3.structured-errors","i-lucide-shield-alert",{"title":56,"path":57,"stem":58,"icon":59},"Lifecycle","\u002Flearn\u002Flifecycle","2.learn\u002F4.lifecycle","i-lucide-arrow-right-left",{"title":61,"path":62,"stem":63,"icon":64},"Sampling","\u002Flearn\u002Fsampling","2.learn\u002F5.sampling","i-lucide-filter",{"title":66,"path":67,"stem":68,"icon":69},"Auto-Redaction","\u002Flearn\u002Fredaction","2.learn\u002F6.redaction","i-lucide-eye-off",{"title":71,"path":72,"stem":73,"icon":74},"Typed Fields","\u002Flearn\u002Ftyped-fields","2.learn\u002F7.typed-fields","i-simple-icons-typescript",{"title":76,"path":77,"stem":78,"icon":79},"Catalogs","\u002Flearn\u002Fcatalogs","2.learn\u002F8.catalogs","i-lucide-book-open",{"title":81,"path":82,"stem":83,"children":84,"page":29},"Integrate","\u002Fintegrate","3.integrate",[85,89,157],{"title":36,"path":86,"stem":87,"icon":88},"\u002Fintegrate\u002Foverview","3.integrate\u002F0.overview","i-lucide-plug",{"title":90,"path":91,"stem":92,"children":93,"page":29},"Adapters","\u002Fintegrate\u002Fadapters","3.integrate\u002Fadapters",[94,97,137],{"title":36,"path":95,"stem":96,"icon":39},"\u002Fintegrate\u002Fadapters\u002Foverview","3.integrate\u002Fadapters\u002F01.overview",{"title":98,"path":99,"stem":100,"children":101,"page":29},"Cloud","\u002Fintegrate\u002Fadapters\u002Fcloud","3.integrate\u002Fadapters\u002Fcloud",[102,107,112,117,122,127,132],{"title":103,"path":104,"stem":105,"icon":106},"Axiom","\u002Fintegrate\u002Fadapters\u002Fcloud\u002Faxiom","3.integrate\u002Fadapters\u002Fcloud\u002F01.axiom","i-custom-axiom",{"title":108,"path":109,"stem":110,"icon":111},"OTLP","\u002Fintegrate\u002Fadapters\u002Fcloud\u002Fotlp","3.integrate\u002Fadapters\u002Fcloud\u002F02.otlp","i-simple-icons-opentelemetry",{"title":113,"path":114,"stem":115,"icon":116},"PostHog","\u002Fintegrate\u002Fadapters\u002Fcloud\u002Fposthog","3.integrate\u002Fadapters\u002Fcloud\u002F03.posthog","i-simple-icons-posthog",{"title":118,"path":119,"stem":120,"icon":121},"Sentry","\u002Fintegrate\u002Fadapters\u002Fcloud\u002Fsentry","3.integrate\u002Fadapters\u002Fcloud\u002F04.sentry","i-simple-icons-sentry",{"title":123,"path":124,"stem":125,"icon":126},"Better Stack","\u002Fintegrate\u002Fadapters\u002Fcloud\u002Fbetter-stack","3.integrate\u002Fadapters\u002Fcloud\u002F05.better-stack","i-simple-icons-betterstack",{"title":128,"path":129,"stem":130,"icon":131},"Datadog","\u002Fintegrate\u002Fadapters\u002Fcloud\u002Fdatadog","3.integrate\u002Fadapters\u002Fcloud\u002F06.datadog","i-simple-icons-datadog",{"title":133,"path":134,"stem":135,"icon":136},"HyperDX","\u002Fintegrate\u002Fadapters\u002Fcloud\u002Fhyperdx","3.integrate\u002Fadapters\u002Fcloud\u002F07.hyperdx","i-custom-hyperdx",{"title":138,"path":139,"stem":140,"children":141,"page":29},"Self-Hosted","\u002Fintegrate\u002Fadapters\u002Fself-hosted","3.integrate\u002Fadapters\u002Fself-hosted",[142,147,152],{"title":143,"path":144,"stem":145,"icon":146},"File System","\u002Fintegrate\u002Fadapters\u002Fself-hosted\u002Ffs","3.integrate\u002Fadapters\u002Fself-hosted\u002F01.fs","i-lucide-hard-drive",{"title":148,"path":149,"stem":150,"icon":151},"NuxtHub","\u002Fintegrate\u002Fadapters\u002Fself-hosted\u002Fnuxthub","3.integrate\u002Fadapters\u002Fself-hosted\u002F02.nuxthub","i-simple-icons-nuxt",{"title":153,"path":154,"stem":155,"icon":156},"Memory","\u002Fintegrate\u002Fadapters\u002Fself-hosted\u002Fmemory","3.integrate\u002Fadapters\u002Fself-hosted\u002F03.memory","i-lucide-cpu",{"title":158,"path":159,"stem":160,"children":161,"page":29},"Frameworks","\u002Fintegrate\u002Fframeworks","3.integrate\u002Fframeworks",[162,166,171,176,181,186,191,196,201,206,211,216,221,226,230,235,240],{"title":36,"path":163,"stem":164,"icon":165},"\u002Fintegrate\u002Fframeworks\u002Foverview","3.integrate\u002Fframeworks\u002F00.overview","i-lucide-layout-grid",{"title":167,"path":168,"stem":169,"icon":170},"Nuxt","\u002Fintegrate\u002Fframeworks\u002Fnuxt","3.integrate\u002Fframeworks\u002F01.nuxt","i-simple-icons-nuxtdotjs",{"title":172,"path":173,"stem":174,"icon":175},"Next.js","\u002Fintegrate\u002Fframeworks\u002Fnextjs","3.integrate\u002Fframeworks\u002F02.nextjs","i-simple-icons-nextdotjs",{"title":177,"path":178,"stem":179,"icon":180},"SvelteKit","\u002Fintegrate\u002Fframeworks\u002Fsveltekit","3.integrate\u002Fframeworks\u002F03.sveltekit","i-simple-icons-svelte",{"title":182,"path":183,"stem":184,"icon":185},"Nitro","\u002Fintegrate\u002Fframeworks\u002Fnitro","3.integrate\u002Fframeworks\u002F04.nitro","i-custom-nitro",{"title":187,"path":188,"stem":189,"icon":190},"TanStack Start","\u002Fintegrate\u002Fframeworks\u002Ftanstack-start","3.integrate\u002Fframeworks\u002F05.tanstack-start","i-custom-tanstack",{"title":192,"path":193,"stem":194,"icon":195},"NestJS","\u002Fintegrate\u002Fframeworks\u002Fnestjs","3.integrate\u002Fframeworks\u002F06.nestjs","i-simple-icons-nestjs",{"title":197,"path":198,"stem":199,"icon":200},"Express","\u002Fintegrate\u002Fframeworks\u002Fexpress","3.integrate\u002Fframeworks\u002F07.express","i-simple-icons-express",{"title":202,"path":203,"stem":204,"icon":205},"Hono","\u002Fintegrate\u002Fframeworks\u002Fhono","3.integrate\u002Fframeworks\u002F08.hono","i-simple-icons-hono",{"title":207,"path":208,"stem":209,"icon":210},"Fastify","\u002Fintegrate\u002Fframeworks\u002Ffastify","3.integrate\u002Fframeworks\u002F09.fastify","i-simple-icons-fastify",{"title":212,"path":213,"stem":214,"icon":215},"Elysia","\u002Fintegrate\u002Fframeworks\u002Felysia","3.integrate\u002Fframeworks\u002F10.elysia","i-custom-elysia",{"title":217,"path":218,"stem":219,"icon":220},"React Router","\u002Fintegrate\u002Fframeworks\u002Freact-router","3.integrate\u002Fframeworks\u002F11.react-router","i-custom-reactrouter",{"title":222,"path":223,"stem":224,"icon":225},"Cloudflare Workers","\u002Fintegrate\u002Fframeworks\u002Fcloudflare-workers","3.integrate\u002Fframeworks\u002F12.cloudflare-workers","i-simple-icons-cloudflare",{"title":227,"path":228,"stem":229,"icon":74},"Standalone","\u002Fintegrate\u002Fframeworks\u002Fstandalone","3.integrate\u002Fframeworks\u002F13.standalone",{"title":231,"path":232,"stem":233,"icon":234},"Astro","\u002Fintegrate\u002Fframeworks\u002Fastro","3.integrate\u002Fframeworks\u002F14.astro","i-simple-icons-astro",{"title":236,"path":237,"stem":238,"icon":239},"oRPC","\u002Fintegrate\u002Fframeworks\u002Forpc","3.integrate\u002Fframeworks\u002F15.orpc","i-lucide-network",{"title":241,"path":242,"stem":243,"icon":244},"AWS Lambda","\u002Fintegrate\u002Fframeworks\u002Faws-lambda","3.integrate\u002Fframeworks\u002F16.aws-lambda","i-custom-lambda",{"title":246,"path":247,"stem":248,"children":249,"page":29},"Use Cases","\u002Fuse-cases","4.use-cases",[250,254,259,288,316,348,353,358],{"title":36,"path":251,"stem":252,"icon":253},"\u002Fuse-cases\u002Foverview","4.use-cases\u002F0.overview","i-lucide-list-checks",{"title":255,"path":256,"stem":257,"icon":258},"Client Logging","\u002Fuse-cases\u002Fclient-logging","4.use-cases\u002F1.client-logging","i-lucide-monitor",{"title":260,"icon":261,"path":262,"stem":263,"children":264,"page":29},"AI SDK","i-simple-icons-vercel","\u002Fuse-cases\u002Fai-sdk","4.use-cases\u002F2.ai-sdk",[265,268,273,278,283],{"title":36,"path":266,"stem":267,"icon":39},"\u002Fuse-cases\u002Fai-sdk\u002Foverview","4.use-cases\u002F2.ai-sdk\u002F01.overview",{"title":269,"path":270,"stem":271,"icon":272},"Usage","\u002Fuse-cases\u002Fai-sdk\u002Fusage","4.use-cases\u002F2.ai-sdk\u002F02.usage","i-lucide-code",{"title":274,"path":275,"stem":276,"icon":277},"Options","\u002Fuse-cases\u002Fai-sdk\u002Foptions","4.use-cases\u002F2.ai-sdk\u002F03.options","i-lucide-sliders",{"title":279,"path":280,"stem":281,"icon":282},"Metadata","\u002Fuse-cases\u002Fai-sdk\u002Fmetadata","4.use-cases\u002F2.ai-sdk\u002F04.metadata","i-lucide-database",{"title":284,"path":285,"stem":286,"icon":287},"Telemetry","\u002Fuse-cases\u002Fai-sdk\u002Ftelemetry","4.use-cases\u002F2.ai-sdk\u002F05.telemetry","i-lucide-activity",{"title":289,"icon":290,"path":291,"stem":292,"children":293,"page":29},"Better Auth","i-simple-icons-betterauth","\u002Fuse-cases\u002Fbetter-auth","4.use-cases\u002F3.better-auth",[294,297,302,307,311],{"title":36,"path":295,"stem":296,"icon":39},"\u002Fuse-cases\u002Fbetter-auth\u002Foverview","4.use-cases\u002F3.better-auth\u002F01.overview",{"title":298,"path":299,"stem":300,"icon":301},"Identify User","\u002Fuse-cases\u002Fbetter-auth\u002Fidentify-user","4.use-cases\u002F3.better-auth\u002F02.identify-user","i-lucide-user-check",{"title":303,"path":304,"stem":305,"icon":306},"Middleware","\u002Fuse-cases\u002Fbetter-auth\u002Fmiddleware","4.use-cases\u002F3.better-auth\u002F03.middleware","i-lucide-shield",{"title":308,"path":309,"stem":310,"icon":258},"Client Sync","\u002Fuse-cases\u002Fbetter-auth\u002Fclient-sync","4.use-cases\u002F3.better-auth\u002F04.client-sync",{"title":312,"path":313,"stem":314,"icon":315},"Performance","\u002Fuse-cases\u002Fbetter-auth\u002Fperformance","4.use-cases\u002F3.better-auth\u002F05.performance","i-lucide-gauge",{"title":317,"icon":318,"path":319,"stem":320,"children":321,"page":29},"Audit Logs","i-lucide-shield-check","\u002Fuse-cases\u002Faudit","4.use-cases\u002F4.audit",[322,325,330,335,340,344],{"title":36,"path":323,"stem":324,"icon":39},"\u002Fuse-cases\u002Faudit\u002Foverview","4.use-cases\u002F4.audit\u002F01.overview",{"title":326,"path":327,"stem":328,"icon":329},"Schema","\u002Fuse-cases\u002Faudit\u002Fschema","4.use-cases\u002F4.audit\u002F02.schema","i-lucide-file-text",{"title":331,"path":332,"stem":333,"icon":334},"Recording","\u002Fuse-cases\u002Faudit\u002Frecording","4.use-cases\u002F4.audit\u002F03.recording","i-lucide-pen-line",{"title":336,"path":337,"stem":338,"icon":339},"Drains","\u002Fuse-cases\u002Faudit\u002Fpipeline","4.use-cases\u002F4.audit\u002F04.pipeline","i-lucide-link",{"title":341,"path":342,"stem":343,"icon":318},"Compliance","\u002Fuse-cases\u002Faudit\u002Fcompliance","4.use-cases\u002F4.audit\u002F05.compliance",{"title":345,"path":346,"stem":347,"icon":79},"Recipes","\u002Fuse-cases\u002Faudit\u002Frecipes","4.use-cases\u002F4.audit\u002F06.recipes",{"title":349,"path":350,"stem":351,"icon":352},"Enrichers","\u002Fuse-cases\u002Fenrichers","4.use-cases\u002F5.enrichers","i-lucide-sparkles",{"title":354,"path":355,"stem":356,"icon":357},"eve","\u002Fuse-cases\u002Feve","4.use-cases\u002F5.eve","i-custom-eve",{"title":284,"path":359,"stem":360,"children":361,"page":29},"\u002Fuse-cases\u002Ftelemetry","4.use-cases\u002F6.telemetry",[362],{"title":284,"path":363,"stem":364,"icon":315},"\u002Fuse-cases\u002Ftelemetry\u002Foverview","4.use-cases\u002F6.telemetry\u002F01.overview",{"title":366,"path":367,"stem":368,"children":369,"page":29},"Extend","\u002Fextend","5.extend",[370,374,379,384,389,393,397,401,405,410,415],{"title":36,"path":371,"stem":372,"icon":373},"\u002Fextend\u002Foverview","5.extend\u002F0.overview","i-lucide-blocks",{"title":375,"path":376,"stem":377,"icon":378},"Stream","\u002Fextend\u002Fstream","5.extend\u002F1.stream","i-lucide-radio-tower",{"title":380,"path":381,"stem":382,"icon":383},"Custom framework","\u002Fextend\u002Fcustom-framework","5.extend\u002F10.custom-framework","i-lucide-puzzle",{"title":385,"path":386,"stem":387,"icon":388},"FS reader","\u002Fextend\u002Ffs-reader","5.extend\u002F2.fs-reader","i-lucide-folder-search",{"title":345,"path":390,"stem":391,"icon":392},"\u002Fextend\u002Fconsumer-recipes","5.extend\u002F3.consumer-recipes","i-lucide-chef-hat",{"title":394,"path":395,"stem":396,"icon":373},"Plugins","\u002Fextend\u002Fplugins","5.extend\u002F4.plugins",{"title":398,"path":399,"stem":400,"icon":352},"Custom enrichers","\u002Fextend\u002Fcustom-enrichers","5.extend\u002F5.custom-enrichers",{"title":402,"path":403,"stem":404,"icon":64},"Tail sampling","\u002Fextend\u002Ftail-sampling","5.extend\u002F6.tail-sampling",{"title":406,"path":407,"stem":408,"icon":409},"Identity headers","\u002Fextend\u002Fidentity-headers","5.extend\u002F7.identity-headers","i-lucide-fingerprint",{"title":411,"path":412,"stem":413,"icon":414},"Custom drains","\u002Fextend\u002Fcustom-drains","5.extend\u002F8.custom-drains","i-lucide-share-2",{"title":416,"path":417,"stem":418,"icon":419},"Drain pipeline","\u002Fextend\u002Fdrain-pipeline","5.extend\u002F9.drain-pipeline","i-lucide-workflow",{"title":421,"path":422,"stem":423,"children":424,"page":29},"Reference","\u002Freference","6.reference",[425,430,433,438,442,447],{"title":426,"path":427,"stem":428,"icon":429},"Configuration","\u002Freference\u002Fconfiguration","6.reference\u002F1.configuration","i-lucide-settings",{"title":312,"path":431,"stem":432,"icon":315},"\u002Freference\u002Fperformance","6.reference\u002F2.performance",{"title":434,"path":435,"stem":436,"icon":437},"Vite Plugin","\u002Freference\u002Fvite-plugin","6.reference\u002F3.vite-plugin","i-custom-vite",{"title":439,"path":440,"stem":441,"icon":318},"Best Practices","\u002Freference\u002Fbest-practices","6.reference\u002F4.best-practices",{"title":443,"path":444,"stem":445,"icon":446},"vs Other Loggers","\u002Freference\u002Fvs-other-loggers","6.reference\u002F5.vs-other-loggers","i-lucide-scale",{"title":448,"path":449,"stem":450,"icon":352},"Agent Skills","\u002Freference\u002Fagent-skills","6.reference\u002F6.agent-skills",{"id":452,"title":453,"body":454,"description":946,"extension":947,"links":948,"meta":952,"navigation":953,"path":407,"seo":954,"stem":408,"__hash__":955},"docs\u002F5.extend\u002F7.identity-headers.md","Identity Headers",{"type":455,"value":456,"toc":940},"minimark",[457,461,528,542,547,576,580,587,675,679,703,719,914,918,936],[458,459,460],"p",{},"Every drain request sent by evlog is tagged with two identity headers so receivers can identify the traffic:",[462,463,464,477],"table",{},[465,466,467],"thead",{},[468,469,470,474],"tr",{},[471,472,473],"th",{},"Header",[471,475,476],{},"Value",[478,479,480,495],"tbody",{},[468,481,482,489],{},[483,484,485],"td",{},[486,487,488],"code",{},"User-Agent",[483,490,491,494],{},[486,492,493],{},"evlog\u002F\u003Cversion>"," (Node \u002F server runtimes only — browsers strip this header)",[468,496,497,502],{},[483,498,499],{},[486,500,501],{},"X-Evlog-Source",[483,503,504,505,508,509,508,512,508,515,508,518,508,521,508,524,527],{},"The adapter name (",[486,506,507],{},"axiom",", ",[486,510,511],{},"datadog",[486,513,514],{},"otlp",[486,516,517],{},"posthog",[486,519,520],{},"sentry",[486,522,523],{},"better-stack",[486,525,526],{},"client",", …)",[458,529,530,531,534,535,538,539,541],{},"The browser-side ",[486,532,533],{},"evlog\u002Fhttp"," drain (used by the client transport) sets ",[486,536,537],{},"X-Evlog-Source: client"," instead, since browsers cannot override ",[486,540,488],{},".",[543,544,546],"h2",{"id":545},"why","Why",[548,549,550,558,567],"ul",{},[551,552,553,557],"li",{},[554,555,556],"strong",{},"Triage at the receiver."," Quickly distinguish evlog traffic from other clients in the receiving system's logs.",[551,559,560,563,564,566],{},[554,561,562],{},"Track adapter usage and version drift."," Roll out a new evlog version and watch the ",[486,565,488],{}," distribution change centrally.",[551,568,569,572,573,575],{},[554,570,571],{},"Debug a specific drain."," Filter by ",[486,574,501],{}," to isolate one adapter's behavior in a sea of incoming requests.",[543,577,579],{"id":578},"reading-the-version","Reading the version",[458,581,582,583,586],{},"Both constants are exported from ",[486,584,585],{},"evlog\u002Ftoolkit"," so your drain (or your receiver) can reference the canonical values:",[588,589,594],"pre",{"className":590,"code":591,"language":592,"meta":593,"style":593},"language-ts shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import { EVLOG_USER_AGENT, EVLOG_VERSION } from 'evlog\u002Ftoolkit'\n\nconsole.log(EVLOG_VERSION)    \u002F\u002F → \"2.16.0\"\nconsole.log(EVLOG_USER_AGENT) \u002F\u002F → \"evlog\u002F2.16.0\"\n","ts","",[486,595,596,634,641,660],{"__ignoreMap":593},[597,598,601,605,609,613,616,619,622,625,628,631],"span",{"class":599,"line":600},"line",1,[597,602,604],{"class":603},"s7zQu","import",[597,606,608],{"class":607},"sMK4o"," {",[597,610,612],{"class":611},"sTEyZ"," EVLOG_USER_AGENT",[597,614,615],{"class":607},",",[597,617,618],{"class":611}," EVLOG_VERSION",[597,620,621],{"class":607}," }",[597,623,624],{"class":603}," from",[597,626,627],{"class":607}," '",[597,629,585],{"class":630},"sfazB",[597,632,633],{"class":607},"'\n",[597,635,637],{"class":599,"line":636},2,[597,638,640],{"emptyLinePlaceholder":639},true,"\n",[597,642,644,647,649,653,656],{"class":599,"line":643},3,[597,645,646],{"class":611},"console",[597,648,541],{"class":607},[597,650,652],{"class":651},"s2Zo4","log",[597,654,655],{"class":611},"(EVLOG_VERSION)    ",[597,657,659],{"class":658},"sHwdD","\u002F\u002F → \"2.16.0\"\n",[597,661,663,665,667,669,672],{"class":599,"line":662},4,[597,664,646],{"class":611},[597,666,541],{"class":607},[597,668,652],{"class":651},[597,670,671],{"class":611},"(EVLOG_USER_AGENT) ",[597,673,674],{"class":658},"\u002F\u002F → \"evlog\u002F2.16.0\"\n",[543,676,678],{"id":677},"overriding-from-a-custom-drain","Overriding from a custom drain",[458,680,681,682,688,689,692,693,696,697,692,699,702],{},"Adapters built with ",[683,684,685],"a",{"href":412},[486,686,687],{},"defineHttpDrain()"," automatically pass the drain ",[486,690,691],{},"name"," as ",[486,694,695],{},"source"," and the canonical ",[486,698,493],{},[486,700,701],{},"userAgent",". You don't need to think about it.",[458,704,705,706,709,710,712,713,715,716,718],{},"When you build a drain on top of ",[486,707,708],{},"httpPost"," from ",[486,711,585],{}," directly (e.g. for a fork with a different identity, or for a vendor that wants its own UA), pass ",[486,714,695],{}," and\u002For ",[486,717,701],{}," to override:",[588,720,722],{"className":590,"code":721,"language":592,"meta":593,"style":593},"import { httpPost } from 'evlog\u002Ftoolkit'\n\nawait httpPost({\n  url: 'https:\u002F\u002Fmy-platform.example.com\u002Fingest',\n  headers: { 'Content-Type': 'application\u002Fjson' },\n  body: '[]',\n  timeout: 5000,\n  label: 'my-platform',\n  source: 'my-platform',           \u002F\u002F sent as X-Evlog-Source\n  userAgent: 'my-fork\u002F1.0',        \u002F\u002F overrides the default User-Agent\n  \u002F\u002F userAgent: false,             \u002F\u002F suppress the header entirely\n})\n",[486,723,724,743,747,760,780,809,826,840,857,876,896,905],{"__ignoreMap":593},[597,725,726,728,730,733,735,737,739,741],{"class":599,"line":600},[597,727,604],{"class":603},[597,729,608],{"class":607},[597,731,732],{"class":611}," httpPost",[597,734,621],{"class":607},[597,736,624],{"class":603},[597,738,627],{"class":607},[597,740,585],{"class":630},[597,742,633],{"class":607},[597,744,745],{"class":599,"line":636},[597,746,640],{"emptyLinePlaceholder":639},[597,748,749,752,754,757],{"class":599,"line":643},[597,750,751],{"class":603},"await",[597,753,732],{"class":651},[597,755,756],{"class":611},"(",[597,758,759],{"class":607},"{\n",[597,761,762,766,769,771,774,777],{"class":599,"line":662},[597,763,765],{"class":764},"swJcz","  url",[597,767,768],{"class":607},":",[597,770,627],{"class":607},[597,772,773],{"class":630},"https:\u002F\u002Fmy-platform.example.com\u002Fingest",[597,775,776],{"class":607},"'",[597,778,779],{"class":607},",\n",[597,781,783,786,788,790,792,795,797,799,801,804,806],{"class":599,"line":782},5,[597,784,785],{"class":764},"  headers",[597,787,768],{"class":607},[597,789,608],{"class":607},[597,791,627],{"class":607},[597,793,794],{"class":764},"Content-Type",[597,796,776],{"class":607},[597,798,768],{"class":607},[597,800,627],{"class":607},[597,802,803],{"class":630},"application\u002Fjson",[597,805,776],{"class":607},[597,807,808],{"class":607}," },\n",[597,810,812,815,817,819,822,824],{"class":599,"line":811},6,[597,813,814],{"class":764},"  body",[597,816,768],{"class":607},[597,818,627],{"class":607},[597,820,821],{"class":630},"[]",[597,823,776],{"class":607},[597,825,779],{"class":607},[597,827,829,832,834,838],{"class":599,"line":828},7,[597,830,831],{"class":764},"  timeout",[597,833,768],{"class":607},[597,835,837],{"class":836},"sbssI"," 5000",[597,839,779],{"class":607},[597,841,843,846,848,850,853,855],{"class":599,"line":842},8,[597,844,845],{"class":764},"  label",[597,847,768],{"class":607},[597,849,627],{"class":607},[597,851,852],{"class":630},"my-platform",[597,854,776],{"class":607},[597,856,779],{"class":607},[597,858,860,863,865,867,869,871,873],{"class":599,"line":859},9,[597,861,862],{"class":764},"  source",[597,864,768],{"class":607},[597,866,627],{"class":607},[597,868,852],{"class":630},[597,870,776],{"class":607},[597,872,615],{"class":607},[597,874,875],{"class":658},"           \u002F\u002F sent as X-Evlog-Source\n",[597,877,879,882,884,886,889,891,893],{"class":599,"line":878},10,[597,880,881],{"class":764},"  userAgent",[597,883,768],{"class":607},[597,885,627],{"class":607},[597,887,888],{"class":630},"my-fork\u002F1.0",[597,890,776],{"class":607},[597,892,615],{"class":607},[597,894,895],{"class":658},"        \u002F\u002F overrides the default User-Agent\n",[597,897,899,902],{"class":599,"line":898},11,[597,900,901],{"class":658},"  \u002F\u002F userAgent: false,",[597,903,904],{"class":658},"             \u002F\u002F suppress the header entirely\n",[597,906,908,911],{"class":599,"line":907},12,[597,909,910],{"class":607},"}",[597,912,913],{"class":611},")\n",[543,915,917],{"id":916},"next-steps","Next steps",[548,919,920,930],{},[551,921,922,925,926,929],{},[683,923,924],{"href":412},"Custom Drains"," — ",[486,927,928],{},"defineHttpDrain"," injects identity headers automatically",[551,931,932,935],{},[683,933,934],{"href":417},"Drain Pipeline"," — wrap any drain in batch + retry while keeping identity headers",[937,938,939],"style",{},"html pre.shiki code .s7zQu, html code.shiki .s7zQu{--shiki-light:#39ADB5;--shiki-light-font-style:italic;--shiki-default:#89DDFF;--shiki-default-font-style:italic;--shiki-dark:#89DDFF;--shiki-dark-font-style:italic}html pre.shiki code .sMK4o, html code.shiki .sMK4o{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}html pre.shiki code .sTEyZ, html code.shiki .sTEyZ{--shiki-light:#90A4AE;--shiki-default:#EEFFFF;--shiki-dark:#BABED8}html pre.shiki code .sfazB, html code.shiki .sfazB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html pre.shiki code .s2Zo4, html code.shiki .s2Zo4{--shiki-light:#6182B8;--shiki-default:#82AAFF;--shiki-dark:#82AAFF}html pre.shiki code .sHwdD, html code.shiki .sHwdD{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#546E7A;--shiki-default-font-style:italic;--shiki-dark:#676E95;--shiki-dark-font-style:italic}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: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html pre.shiki code .swJcz, html code.shiki .swJcz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}html pre.shiki code .sbssI, html code.shiki .sbssI{--shiki-light:#F76D47;--shiki-default:#F78C6C;--shiki-dark:#F78C6C}",{"title":593,"searchDepth":636,"depth":636,"links":941},[942,943,944,945],{"id":545,"depth":636,"text":546},{"id":578,"depth":636,"text":579},{"id":677,"depth":636,"text":678},{"id":916,"depth":636,"text":917},"Every drain request sent by evlog is tagged with User-Agent and X-Evlog-Source headers so receivers can identify and triage the traffic. Override or suppress them when your custom drain needs different identity.","md",[949],{"label":924,"icon":414,"to":412,"color":950,"variant":951},"neutral","subtle",{},{"title":406,"icon":409},{"title":453,"description":946},"UpSbbTef47vMxtu4Pph48SjBF68OaEPBZOLoGhRxGZU",[957,959],{"title":402,"path":403,"stem":404,"description":958,"icon":64,"children":-1},"Decide post-hoc whether to keep an event with full knowledge of its outcome (status, duration, errors). The opposite of head sampling — keep all errors and slow requests while throwing away healthy noise.",{"title":411,"path":412,"stem":413,"description":960,"icon":414,"children":-1},"Build a drain for any backend without a built-in adapter — defineHttpDrain for HTTP destinations, defineDrain for any other transport. Standardized config resolution, retries, timeouts, and identity headers handled for you.",1784142042954]