diff --git a/core/schemas.py b/core/schemas.py
index 775cd6b0..f4080c90 100644
--- a/core/schemas.py
+++ b/core/schemas.py
@@ -4,6 +4,7 @@ from typing import Annotated
 from annotated_types import MinLen
 from django.contrib.staticfiles.storage import staticfiles_storage
 from django.db.models import Q
+from django.urls import reverse
 from django.utils.text import slugify
 from haystack.query import SearchQuerySet
 from ninja import FilterSchema, ModelSchema, Schema
@@ -37,13 +38,13 @@ class UserProfileSchema(ModelSchema):
 
     @staticmethod
     def resolve_profile_url(obj: User) -> str:
-        return obj.get_absolute_url()
+        return reverse("core:user_profile", kwargs={"user_id": obj.pk})
 
     @staticmethod
     def resolve_profile_pict(obj: User) -> str:
         if obj.profile_pict_id is None:
             return staticfiles_storage.url("core/img/unknown.jpg")
-        return obj.profile_pict.get_download_url()
+        return reverse("core:download", kwargs={"file_id": obj.profile_pict_id})
 
 
 class SithFileSchema(ModelSchema):
diff --git a/core/static/bundled/core/components/ajax-select-base.ts b/core/static/bundled/core/components/ajax-select-base.ts
index 0befd398..674b7b73 100644
--- a/core/static/bundled/core/components/ajax-select-base.ts
+++ b/core/static/bundled/core/components/ajax-select-base.ts
@@ -103,6 +103,12 @@ export class AutoCompleteSelectBase extends inheritHtmlElement("select") {
 export abstract class AjaxSelect extends AutoCompleteSelectBase {
   protected filter?: (items: TomOption[]) => TomOption[] = null;
   protected minCharNumberForSearch = 2;
+  /**
+   * A cache of researches that have been made using this input.
+   * For each record, the key is the user's query and the value
+   * is the list of results sent back by the server.
+   */
+  protected cache = {} as Record<string, TomOption[]>;
 
   protected abstract valueField: string;
   protected abstract labelField: string;
@@ -135,7 +141,13 @@ export abstract class AjaxSelect extends AutoCompleteSelectBase {
       this.widget.clearOptions();
     }
 
-    const resp = await this.search(query);
+    // Check in the cache if this query has already been typed
+    // and do an actual HTTP request only if the result isn't cached
+    let resp = this.cache[query];
+    if (!resp) {
+      resp = await this.search(query);
+      this.cache[query] = resp;
+    }
 
     if (this.filter) {
       callback(this.filter(resp), []);