Refactor most getServerProps to fetch independent request in parallel and projected the data only to return the necessary fields and changed some functions

src/pages/dashboard/developer.tsx

@@ -2,21 +2,16 @@
 import UserDisplayList from "@/components/UserDisplayList";
 import IconCard from "@/components/IconCard";
 import { EntityWithRoles } from "@/interfaces/entity";
-import { Stat,  Type, User } from "@/interfaces/user";
+import { Stat, Type, User } from "@/interfaces/user";
 import { sessionOptions } from "@/lib/session";
 import { filterBy, mapBy, redirect, serialize } from "@/utils";
 import { requestUser } from "@/utils/api";
-import {
-  countEntitiesAssignments,
-} from "@/utils/assignments.be";
+import { countEntitiesAssignments } from "@/utils/assignments.be";
 import { getEntities } from "@/utils/entities.be";
 import { countGroups } from "@/utils/groups.be";
 import { checkAccess } from "@/utils/permissions";
 import { groupByExam } from "@/utils/stats";
-import {
-  countUsersByTypes,
-  getUsers,
-} from "@/utils/users.be";
+import { countUsersByTypes, getUsers } from "@/utils/users.be";
 import { withIronSessionSsr } from "iron-session/next";
 import Head from "next/head";
 import { useRouter } from "next/router";
@@ -49,45 +44,41 @@ export const getServerSideProps = withIronSessionSsr(async ({ req, res }) => {
 
   if (!checkAccess(user, ["admin", "developer"])) return redirect("/");
 
-  const students = await getUsers(
-    { type: "student" },
-    10,
-    {
-      averageLevel: -1,
-    },
-    { id: 1, name: 1, email: 1, profilePicture: 1 }
-  );
-
-  const usersCount = await countUsersByTypes([
-    "student",
-    "teacher",
-    "corporate",
-    "mastercorporate",
+  const [
+    students,
+    latestStudents,
+    latestTeachers,
+    usersCount,
+    entities,
+    groupsCount,
+  ] = await Promise.all([
+    getUsers(
+      { type: "student" },
+      10,
+      { averageLevel: -1 },
+      { _id: 0, id: 1, name: 1, email: 1, profilePicture: 1 }
+    ),
+    getUsers(
+      { type: "student" },
+      10,
+      { registrationDate: -1 },
+      { _id: 0, id: 1, name: 1, email: 1, profilePicture: 1 }
+    ),
+    getUsers(
+      { type: "teacher" },
+      10,
+      { registrationDate: -1 },
+      { _id: 0, id: 1, name: 1, email: 1, profilePicture: 1 }
+    ),
+    countUsersByTypes(["student", "teacher", "corporate", "mastercorporate"]),
+    getEntities(undefined, { _id: 0, id: 1, label: 1 }),
+    countGroups(),
   ]);
 
-  const latestStudents = await getUsers(
-    { type: "student" },
-    10,
-    {
-      registrationDate: -1,
-    },
-    {id:1, name: 1, email: 1, profilePicture: 1 }
-  );
-  const latestTeachers = await getUsers(
-    { type: "teacher" },
-    10,
-    {
-      registrationDate: -1,
-    },
-    { id:1,name: 1, email: 1, profilePicture: 1 }
-  );
-
-  const entities = await getEntities(undefined, { _id: 0, id: 1, label: 1 });
   const assignmentsCount = await countEntitiesAssignments(
     mapBy(entities, "id"),
     { archived: { $ne: true } }
   );
-  const groupsCount = await countGroups();
 
   return {
     props: serialize({