diff --git a/filbackend/src/main/kotlin/Filbackend.kt b/filbackend/src/main/kotlin/Filbackend.kt
index fdc17e2..8a20b9f 100644
--- a/filbackend/src/main/kotlin/Filbackend.kt
+++ b/filbackend/src/main/kotlin/Filbackend.kt
@@ -3,18 +3,22 @@ import Filsluse.finnPerson
 import io.ktor.http.*
 import io.ktor.http.ContentType.Application.Json
 import io.ktor.http.HttpStatusCode.Companion.BadRequest
+import io.ktor.http.HttpStatusCode.Companion.Created
 import io.ktor.http.HttpStatusCode.Companion.NotFound
 import io.ktor.http.HttpStatusCode.Companion.OK
 import io.ktor.server.application.*
 import io.ktor.server.cio.*
 import io.ktor.server.engine.*
 import io.ktor.server.http.content.*
+import io.ktor.server.request.*
 import io.ktor.server.response.*
 import io.ktor.server.routing.*
 import java.util.UUID
 
 fun main() {
     embeddedServer(CIO, environment = applicationEngineEnvironment {
+        val personer = mutableMapOf<UUID, String>()
+        val hendelser = mutableMapOf<UUID, String>()
 
         module {
             routing {
@@ -26,21 +30,30 @@ fun main() {
 
                 get("/api/person/") {
                     val maskertId = call.request.headers["maskertId"]?.let { UUID.fromString(it) } ?: return@get call.respond(BadRequest)
-                    val person = maskertId.finnPerson() ?: return@get call.respond(NotFound)
+                    val person = personer[maskertId] ?: maskertId.finnPerson() ?: return@get call.respond(NotFound)
                     call.respondText(person, Json, OK)
                 }
 
                 post("/api/uuid/") {
                     val maskertId = call.request.headers["maskertId"]?.let { UUID.fromString(it) } ?: return@post call.respond(BadRequest)
-                    val person = maskertId.finnPerson() ?: return@post call.respond(NotFound)
+                    val person = personer[maskertId] ?: maskertId.finnPerson() ?: return@post call.respond(NotFound)
                     call.respondText(person, Json, OK)
                 }
 
                 get("/api/hendelse/{meldingsreferanse}") {
                     val meldingsreferanse = call.parameters["meldingsreferanse"]?.let { UUID.fromString(it) } ?: return@get call.respond(BadRequest)
-                    val hendelse = meldingsreferanse.finnHendelse() ?: return@get call.respond(NotFound)
+                    val hendelse = hendelser[meldingsreferanse] ?: meldingsreferanse.finnHendelse() ?: return@get call.respond(NotFound)
                     call.respondText(hendelse, Json, OK)
                 }
+
+                post("/api/{type}/{uuid}") {
+                    val type = call.parameters["type"]?.takeIf { it in setOf("person", "hendelse") } ?: return@post call.respond(BadRequest)
+                    val uuid = call.parameters["uuid"]?.let { UUID.fromString(it) } ?: return@post call.respond(BadRequest)
+                    val json = call.receiveText()
+                    if (type == "hendelse") hendelser[uuid] = json
+                    else personer[uuid] = json
+                    call.respond(Created)
+                }
             }
         }