diff --git a/frameworks/C++/cutelyst/build.sh b/frameworks/C++/cutelyst/build.sh
index cc9cc8f3c8a..3a77c321e97 100755
--- a/frameworks/C++/cutelyst/build.sh
+++ b/frameworks/C++/cutelyst/build.sh
@@ -1,8 +1,9 @@
 #!/bin/bash
 
-export ASQL_VER=0.74.0
+export ASQL_VER=0.84.0
 export CUTELEE_VER=6.1.0
-export CUTELYST_VER=3.7.0
+export CUTELYST_TAG=v4.0.0-alpha1
+export CUTELYST_VER=4.0.0
 
 apt update -qq && \
     apt install -yqq --no-install-recommends \
@@ -21,8 +22,8 @@ wget -q https://github.com/cutelyst/cutelee/releases/download/v${CUTELEE_VER}/cu
 wget -q https://github.com/cutelyst/asql/releases/download/v${ASQL_VER}/libasql0-qt6_${ASQL_VER}_amd64.deb && \
     apt install -yqq ./libasql0-qt6_${ASQL_VER}_amd64.deb
 
-wget -q https://github.com/cutelyst/cutelyst/releases/download/v${CUTELYST_VER}/cutelyst3-qt6_${CUTELYST_VER}_amd64.deb && \
-    apt install -yqq ./cutelyst3-qt6_${CUTELYST_VER}_amd64.deb
+wget -q https://github.com/cutelyst/cutelyst/releases/download/${CUTELYST_TAG}/cutelyst4-qt6_${CUTELYST_VER}_amd64.deb && \
+    apt install -yqq ./cutelyst4-qt6_${CUTELYST_VER}_amd64.deb
 
 cd ${TROOT} && \
     mkdir -p build && \
diff --git a/frameworks/C++/cutelyst/src/CMakeLists.txt b/frameworks/C++/cutelyst/src/CMakeLists.txt
index 38e6a06b54f..43a30c3d307 100644
--- a/frameworks/C++/cutelyst/src/CMakeLists.txt
+++ b/frameworks/C++/cutelyst/src/CMakeLists.txt
@@ -14,8 +14,8 @@ FetchContent_Declare(
 FetchContent_MakeAvailable(mimalloc)
 
 find_package(Qt6 6.2.0 REQUIRED COMPONENTS Core Network Sql)
-find_package(ASqlQt6 0.74 REQUIRED)
-find_package(Cutelyst3Qt6 3.6 REQUIRED)
+find_package(ASqlQt6 0.84 REQUIRED)
+find_package(Cutelyst4Qt6 3.6 REQUIRED)
 find_package(Cutelee6Qt6 6.1.0 REQUIRED)
 find_package(PostgreSQL REQUIRED)
 
diff --git a/frameworks/C++/cutelyst/src/cachedqueries.cpp b/frameworks/C++/cutelyst/src/cachedqueries.cpp
index 650338ea897..5a8d90b64c6 100644
--- a/frameworks/C++/cutelyst/src/cachedqueries.cpp
+++ b/frameworks/C++/cutelyst/src/cachedqueries.cpp
@@ -20,7 +20,7 @@ CachedQueries::CachedQueries(QObject *parent)
 
 void CachedQueries::cached_queries(Context *c)
 {
-    int queries = c->request()->queryParam(QStringLiteral("count")).toInt();
+    int queries = c->request()->queryParam(u"count"_qs).toInt();
     if (queries < 1) {
         queries = 1;
     } else if (queries > 500) {
@@ -48,8 +48,8 @@ void CachedQueries::cached_queries(Context *c)
                 auto it = result.begin();
                 int id = it[0].toInt();
                 auto obj = new QJsonObject({
-                                               {QStringLiteral("id"), id},
-                                               {QStringLiteral("randomNumber"), it[1].toInt()}
+                                               {u"id"_qs, id},
+                                               {u"randomNumber"_qs, it[1].toInt()}
                                            });
                 array->append(*obj);
                 cache.insert(id, obj, 1);
diff --git a/frameworks/C++/cutelyst/src/cutelyst-benchmarks.cpp b/frameworks/C++/cutelyst/src/cutelyst-benchmarks.cpp
index 0cd1300b04e..ff72ac56b1a 100644
--- a/frameworks/C++/cutelyst/src/cutelyst-benchmarks.cpp
+++ b/frameworks/C++/cutelyst/src/cutelyst-benchmarks.cpp
@@ -40,7 +40,7 @@ cutelyst_benchmarks::~cutelyst_benchmarks()
 
 bool cutelyst_benchmarks::init()
 {
-    if (config(QStringLiteral("SendDate")).value<bool>()) {
+    if (config(u"SendDate"_qs).value<bool>()) {
         qDebug() << "Manually send date";
         auto dateT = new QTimer(this);
         dateT->setInterval(1000);
@@ -63,9 +63,9 @@ bool cutelyst_benchmarks::init()
     new CachedQueries(this);
 
     if (defaultHeaders().server().isEmpty()) {
-        defaultHeaders().setServer(QStringLiteral("Cutelyst"));
+        defaultHeaders().setServer("Cutelyst"_qba);
     }
-    defaultHeaders().removeHeader(QStringLiteral("X-Cutelyst"));
+    defaultHeaders().removeHeader("X-Cutelyst");
 
     return true;
 }
@@ -75,48 +75,43 @@ bool cutelyst_benchmarks::postFork()
     QMutexLocker locker(&mutex); // QSqlDatabase::addDatabase is not thread-safe
 
     QSqlDatabase db;
-    const auto driver = config(QStringLiteral("Driver")).toString();
+    const auto driver = config(u"Driver"_qs).toString();
     if (driver == u"QPSQL") {
-        db = QSqlDatabase::addDatabase(driver, Sql::databaseNameThread(QStringLiteral("postgres")));
-        db.setDatabaseName(QStringLiteral("hello_world"));
-        db.setUserName(QStringLiteral("benchmarkdbuser"));
-        db.setPassword(QStringLiteral("benchmarkdbpass"));
-        db.setHostName(config(QStringLiteral("DatabaseHostName")).toString());
+        db = QSqlDatabase::addDatabase(driver, Sql::databaseNameThread(u"postgres"_qs));
+        db.setDatabaseName(u"hello_world"_qs);
+        db.setUserName(u"benchmarkdbuser"_qs);
+        db.setPassword(u"benchmarkdbpass"_qs);
+        db.setHostName(config(u"DatabaseHostName"_qs).toString());
         if (!db.open()) {
             qDebug() << "Error opening PostgreSQL db:" << db << db.connectionName() << db.lastError().databaseText();
             return false;
         }
     } else if (driver == u"QMYSQL") {
-        db = QSqlDatabase::addDatabase(driver, Sql::databaseNameThread(QStringLiteral("mysql")));
-        db.setDatabaseName(QStringLiteral("hello_world"));
-        db.setUserName(QStringLiteral("benchmarkdbuser"));
-        db.setPassword(QStringLiteral("benchmarkdbpass"));
-        db.setHostName(config(QStringLiteral("DatabaseHostName")).toString());
+        db = QSqlDatabase::addDatabase(driver, Sql::databaseNameThread(u"mysql"_qs));
+        db.setDatabaseName(u"hello_world"_qs);
+        db.setUserName(u"benchmarkdbuser"_qs);
+        db.setPassword(u"benchmarkdbpass"_qs);
+        db.setHostName(config(u"DatabaseHostName"_qs).toString());
         if (!db.open()) {
             qDebug() << "Error opening MySQL db:" << db << db.connectionName() << db.lastError().databaseText();
             return false;
         }
     } else if (driver == u"postgres") {
-        QUrl uri(QStringLiteral("postgresql://benchmarkdbuser:benchmarkdbpass@server/hello_world"));
-        uri.setHost(config(QStringLiteral("DatabaseHostName")).toString());
+        QUrl uri(u"postgresql://benchmarkdbuser:benchmarkdbpass@server/hello_world"_qs);
+        uri.setHost(config(u"DatabaseHostName"_qs).toString());
         qDebug() << "ASql URI:" << uri.toString();
 
         APool::create(ASql::APg::factory(uri.toString()));
         APool::setMaxIdleConnections(128);
-        APool::setSetupCallback([](ADatabase &db) {
+        APool::setSetupCallback([](ADatabase db) {
             // Enable Pipeline mode
             db.enterPipelineMode(500);
         });
     }
 
     qDebug() << "Connections" << QCoreApplication::applicationPid() << QThread::currentThread() << QSqlDatabase::connectionNames();
-//    db = QSqlDatabase::addDatabase(QLatin1String("QSQLITE"), QLatin1String("sqlite"));
-//    if (!db.open()) {
-//        qDebug() << "Error opening db:" << db << db.lastError().databaseText();
-//        return false;
-//    }
 
     return true;
 }
 
-//#include "moc_cutelyst-benchmarks.cpp"
+#include "moc_cutelyst-benchmarks.cpp"
diff --git a/frameworks/C++/cutelyst/src/databaseupdatestest.cpp b/frameworks/C++/cutelyst/src/databaseupdatestest.cpp
index 07a21b90f97..7e3d0ee1f83 100644
--- a/frameworks/C++/cutelyst/src/databaseupdatestest.cpp
+++ b/frameworks/C++/cutelyst/src/databaseupdatestest.cpp
@@ -25,7 +25,7 @@ DatabaseUpdatesTest::DatabaseUpdatesTest(QObject *parent) : Controller(parent)
 
 void DatabaseUpdatesTest::updatep(Context *c)
 {
-    int queries = c->request()->queryParam(QStringLiteral("queries"), QStringLiteral("1")).toInt();
+    int queries = c->request()->queryParam(u"queries"_qs, u"1"_qs).toInt();
     if (queries < 1) {
         queries = 1;
     } else if (queries > 500) {
@@ -66,7 +66,7 @@ void DatabaseUpdatesTest::updatep(Context *c)
 
 void DatabaseUpdatesTest::updateb(Context *c)
 {
-    int queries = c->request()->queryParam(QStringLiteral("queries"), QStringLiteral("1")).toInt();
+    int queries = c->request()->queryParam(u"queries"_qs, u"1"_qs).toInt();
     if (queries < 1) {
         queries = 1;
     } else if (queries > 500) {
@@ -117,22 +117,22 @@ void DatabaseUpdatesTest::updateb(Context *c)
 void DatabaseUpdatesTest::updates_postgres(Context *c)
 {
     QSqlQuery query = CPreparedSqlQueryThreadForDB(
-                QLatin1String("SELECT id, randomNumber FROM world WHERE id = :id"),
-                QStringLiteral("postgres"));
+                u"SELECT id, randomNumber FROM world WHERE id = :id"_qs,
+                u"postgres"_qs);
     QSqlQuery updateQuery = CPreparedSqlQueryThreadForDB(
-                QLatin1String("UPDATE world SET randomNumber = :randomNumber WHERE id = :id"),
-                QStringLiteral("postgres"));
+                u"UPDATE world SET randomNumber = :randomNumber WHERE id = :id"_qs,
+                u"postgres"_qs);
     processQuery(c, query, updateQuery);
 }
 
 void DatabaseUpdatesTest::updates_mysql(Context *c)
 {
     QSqlQuery query = CPreparedSqlQueryThreadForDB(
-                QLatin1String("SELECT randomNumber, id FROM world WHERE id = :id"),
-                QStringLiteral("mysql"));
+                u"SELECT randomNumber, id FROM world WHERE id = :id"_qs,
+                u"mysql"_qs);
     QSqlQuery updateQuery = CPreparedSqlQueryThreadForDB(
-                QLatin1String("UPDATE world SET randomNumber = :randomNumber WHERE id = :id"),
-                QStringLiteral("mysql"));
+                u"UPDATE world SET randomNumber = :randomNumber WHERE id = :id"_qs,
+                u"mysql"_qs);
     processQuery(c, query, updateQuery);
 }
 
@@ -140,7 +140,7 @@ void DatabaseUpdatesTest::processQuery(Context *c, QSqlQuery &query, QSqlQuery &
 {
     QJsonArray array;
 
-    int queries = c->request()->queryParam(QStringLiteral("queries"), QStringLiteral("1")).toInt();
+    int queries = c->request()->queryParam(u"queries"_qs, u"1"_qs).toInt();
     if (queries < 1) {
         queries = 1;
     } else if (queries > 500) {
@@ -153,7 +153,7 @@ void DatabaseUpdatesTest::processQuery(Context *c, QSqlQuery &query, QSqlQuery &
     for (int i = 0; i < queries; ++i) {
         int id = (rand() % 10000) + 1;
 
-        query.bindValue(QStringLiteral(":id"), id);
+        query.bindValue(u":id"_qs, id);
         if (Q_UNLIKELY(!query.exec() || !query.next())) {
             c->res()->setStatus(Response::InternalServerError);
             return;
@@ -164,13 +164,13 @@ void DatabaseUpdatesTest::processQuery(Context *c, QSqlQuery &query, QSqlQuery &
         randomNumbers.append(randomNumber);
 
         array.append(QJsonObject{
-                         {QStringLiteral("id"), id},
-                         {QStringLiteral("randomNumber"), randomNumber}
+                         {u"id"_qs, id},
+                         {u"randomNumber"_qs, randomNumber}
                      });
     }
 
-    updateQuery.bindValue(QStringLiteral(":id"), ids);
-    updateQuery.bindValue(QStringLiteral(":randomNumber"), randomNumbers);
+    updateQuery.bindValue(u":id"_qs, ids);
+    updateQuery.bindValue(u":randomNumber"_qs, randomNumbers);
     if (Q_LIKELY(updateQuery.execBatch())) {
         c->response()->setJsonArrayBody(array);
     } else {
@@ -182,24 +182,24 @@ APreparedQuery DatabaseUpdatesTest::getSql(int count)
 {
     auto iter = m_sqlMap.find(count);
     if (Q_UNLIKELY(iter == m_sqlMap.end())) {
-        QString sql = QStringLiteral("UPDATE WORLD SET randomnumber=CASE id ");
+        QString sql = u"UPDATE WORLD SET randomnumber=CASE id "_qs;
         sql.reserve(80 + count * 25);
         int placeholdersCounter = 1;
         for (int i = 0; i < count; i++) {
-            sql.append(QStringLiteral("WHEN $%1 THEN $%2 ").arg(placeholdersCounter).arg(placeholdersCounter + 1));
+            sql.append(u"WHEN $%1 THEN $%2 "_qs.arg(placeholdersCounter).arg(placeholdersCounter + 1));
             placeholdersCounter += 2;
         }
-        sql.append(QStringLiteral("ELSE randomnumber END WHERE id IN ("));
+        sql.append(u"ELSE randomnumber END WHERE id IN (");
 
         for (int i = 0; i < count; i++) {
-            sql.append(QLatin1Char('$') + QString::number(placeholdersCounter) + QLatin1Char(','));
+            sql.append(u'$' + QString::number(placeholdersCounter) + u',');
             ++placeholdersCounter;
         }
 
         if (count) {
             sql.remove(sql.size() - 1, 1);
         }
-        sql.append(QLatin1Char(')'));
+        sql.append(u')');
 
         iter = m_sqlMap.insert(count, APreparedQuery(sql));
     }
diff --git a/frameworks/C++/cutelyst/src/fortunetest.cpp b/frameworks/C++/cutelyst/src/fortunetest.cpp
index 2a1d79cb63a..1661cc3a359 100644
--- a/frameworks/C++/cutelyst/src/fortunetest.cpp
+++ b/frameworks/C++/cutelyst/src/fortunetest.cpp
@@ -33,7 +33,7 @@ void FortuneTest::fortunes_raw_p(Context *c)
             fortunes.emplace_back(Fortune{it[0].toInt(), it[1].toString()});
             ++it;
         }
-        fortunes.emplace_back(Fortune{0, QStringLiteral("Additional fortune added at request time.")});
+        fortunes.emplace_back(Fortune{0, u"Additional fortune added at request time."_qs});
 
         std::sort(fortunes.begin(), fortunes.end(), [] (const Fortune &a1, const Fortune &a2) {
             return a1.message < a2.message;
@@ -46,8 +46,8 @@ void FortuneTest::fortunes_raw_p(Context *c)
 void FortuneTest::fortunes_raw_postgres(Context *c)
 {
     QSqlQuery query = CPreparedSqlQueryThreadForDB(
-                QLatin1String("SELECT id, message FROM fortune"),
-                QStringLiteral("postgres"));
+                u"SELECT id, message FROM fortune"_qs,
+                u"postgres"_qs);
     auto fortunes = processQuery(c, query);
     renderRaw(c, fortunes);
 }
@@ -55,8 +55,8 @@ void FortuneTest::fortunes_raw_postgres(Context *c)
 void FortuneTest::fortunes_raw_mysql(Context *c)
 {
     QSqlQuery query = CPreparedSqlQueryThreadForDB(
-                QLatin1String("SELECT id, message FROM fortune"),
-                QStringLiteral("mysql"));
+                u"SELECT id, message FROM fortune"_qs,
+                u"mysql"_qs);
     auto fortunes = processQuery(c, query);
     renderRaw(c, fortunes);
 }
@@ -82,59 +82,59 @@ void FortuneTest::fortunes_c_p(Context *c)
         }
 
         fortunes.append(QVariant::fromValue(QVariantList{
-                            {0, QStringLiteral("Additional fortune added at request time.")},
+                            {0, u"Additional fortune added at request time."_qs},
                         }));
         std::sort(fortunes.begin(), fortunes.end(), [] (const QVariant &a1, const QVariant &a2) {
             return a1.toList()[1].toString() < a2.toList()[1].toString();
         });
 
-        c->setStash(QStringLiteral("template"), QStringLiteral("fortunes.html"));
-        c->setStash(QStringLiteral("fortunes"), fortunes);
+        c->setStash(u"template"_qs, u"fortunes.html"_qs);
+        c->setStash(u"fortunes"_qs, fortunes);
         static thread_local View *view = c->view();
         view->execute(c);
-        c->response()->setContentType(QStringLiteral("text/html; charset=UTF-8"));
+        c->response()->setContentType("text/html; charset=UTF-8"_qba);
     });
 }
 
 void FortuneTest::fortunes_cutelee_postgres(Context *c)
 {
     QSqlQuery query = CPreparedSqlQueryThreadForDB(
-                QLatin1String("SELECT id, message FROM fortune"),
-                QStringLiteral("postgres"));
+                u"SELECT id, message FROM fortune"_qs,
+                u"postgres"_qs);
     if (query.exec()) {
         QVariantList fortunes = Sql::queryToList(query);
         fortunes.append(QVariant::fromValue(QVariantList{
-                            {0, QStringLiteral("Additional fortune added at request time.")},
+                            {0, u"Additional fortune added at request time."_qs},
                         }));
         std::sort(fortunes.begin(), fortunes.end(), [] (const QVariant &a1, const QVariant &a2) {
             return a1.toList()[1].toString() < a2.toList()[1].toString();
         });
-        c->setStash(QStringLiteral("template"), QStringLiteral("fortunes.html"));
-        c->setStash(QStringLiteral("fortunes"), fortunes);
+        c->setStash(u"template"_qs, u"fortunes.html"_qs);
+        c->setStash(u"fortunes"_qs, fortunes);
         static thread_local View *view = c->view();
         view->execute(c);
-        c->response()->setContentType(QStringLiteral("text/html; charset=UTF-8"));
+        c->response()->setContentType("text/html; charset=UTF-8"_qba);
     }
 }
 
 void FortuneTest::fortunes_cutelee_mysql(Context *c)
 {
     QSqlQuery query = CPreparedSqlQueryThreadForDB(
-                QLatin1String("SELECT id, message FROM fortune"),
-                QStringLiteral("mysql"));
+                u"SELECT id, message FROM fortune"_qs,
+                u"mysql"_qs);
     if (query.exec()) {
         QVariantList fortunes = Sql::queryToList(query);
         fortunes.append(QVariant::fromValue(QVariantList{
-                            {0, QStringLiteral("Additional fortune added at request time.")},
+                            {0, u"Additional fortune added at request time."_qs},
                         }));
         std::sort(fortunes.begin(), fortunes.end(), [] (const QVariant &a1, const QVariant &a2) {
             return a1.toList()[1].toString() < a2.toList()[1].toString();
         });
-        c->setStash(QStringLiteral("template"), QStringLiteral("fortunes.html"));
-        c->setStash(QStringLiteral("fortunes"), fortunes);
+        c->setStash(u"template"_qs, u"fortunes.html"_qs);
+        c->setStash(u"fortunes"_qs, fortunes);
         static thread_local View *view = c->view();
         view->execute(c);
-        c->response()->setContentType(QStringLiteral("text/html; charset=UTF-8"));
+        c->response()->setContentType("text/html; charset=UTF-8"_qba);
     }
 }
 
@@ -151,7 +151,7 @@ FortuneList FortuneTest::processQuery(Context *c, QSqlQuery &query)
     while (query.next()) {
         fortunes.push_back({query.value(0).toInt(), query.value(1).toString()});
     }
-    fortunes.push_back({0, QStringLiteral("Additional fortune added at request time.")});
+    fortunes.push_back({0, u"Additional fortune added at request time."_qs});
 
     std::sort(fortunes.begin(), fortunes.end(), [] (const Fortune &a1, const Fortune &a2) {
         return a1.message < a2.message;
@@ -183,5 +183,5 @@ void FortuneTest::renderRaw(Context *c, const FortuneList &fortunes) const
 
     auto response = c->response();
     response->setBody(out);
-    response->setContentType(QStringLiteral("text/html; charset=UTF-8"));
+    response->setContentType("text/html; charset=UTF-8"_qba);
 }
diff --git a/frameworks/C++/cutelyst/src/jsontest.cpp b/frameworks/C++/cutelyst/src/jsontest.cpp
index d30dab8bd43..da3ce3619bc 100644
--- a/frameworks/C++/cutelyst/src/jsontest.cpp
+++ b/frameworks/C++/cutelyst/src/jsontest.cpp
@@ -12,7 +12,7 @@ JsonTest::JsonTest(QObject *parent) : Controller(parent)
 
 void JsonTest::json(Context *c)
 {
-    c->response()->setJsonObjectBody({ {QStringLiteral("message"), QStringLiteral("Hello, World!")} });
+    c->response()->setJsonObjectBody({ {u"message"_qs, u"Hello, World!"_qs} });
 }
 
 void JsonTest::pson(Context *c)
diff --git a/frameworks/C++/cutelyst/src/multipledatabasequeriestest.cpp b/frameworks/C++/cutelyst/src/multipledatabasequeriestest.cpp
index 50960101b06..a032c15f69b 100644
--- a/frameworks/C++/cutelyst/src/multipledatabasequeriestest.cpp
+++ b/frameworks/C++/cutelyst/src/multipledatabasequeriestest.cpp
@@ -21,7 +21,7 @@ MultipleDatabaseQueriesTest::MultipleDatabaseQueriesTest(QObject *parent) : Cont
 
 void MultipleDatabaseQueriesTest::queriesp(Context *c)
 {
-    int queries = c->request()->queryParam(QStringLiteral("queries")).toInt();
+    int queries = c->request()->queryParam(u"queries"_qs).toInt();
     if (queries < 1) {
         queries = 1;
     } else if (queries > 500) {
@@ -39,8 +39,8 @@ void MultipleDatabaseQueriesTest::queriesp(Context *c)
             if (Q_LIKELY(!result.error() && result.size())) {
                 auto it = result.begin();
                 array->append(QJsonObject{
-                                  {QStringLiteral("id"), it[0].toInt()},
-                                  {QStringLiteral("randomNumber"), it[1].toInt()}
+                                  {u"id"_qs, it[0].toInt()},
+                                  {u"randomNumber"_qs, it[1].toInt()}
                               });
 
                 if (i + 1 == queries) {
@@ -57,16 +57,16 @@ void MultipleDatabaseQueriesTest::queriesp(Context *c)
 void MultipleDatabaseQueriesTest::query_postgres(Context *c)
 {
     QSqlQuery query = CPreparedSqlQueryThreadForDB(
-                QLatin1String("SELECT id, randomNumber FROM world WHERE id = :id"),
-                QStringLiteral("postgres"));
+                u"SELECT id, randomNumber FROM world WHERE id = :id"_qs,
+                u"postgres"_qs);
     processQuery(c, query);
 }
 
 void MultipleDatabaseQueriesTest::query_mysql(Context *c)
 {
     QSqlQuery query = CPreparedSqlQueryThreadForDB(
-                QLatin1String("SELECT id, randomNumber FROM world WHERE id = :id"),
-                QStringLiteral("mysql"));
+                u"SELECT id, randomNumber FROM world WHERE id = :id"_qs,
+                u"mysql"_qs);
     processQuery(c, query);
 }
 
@@ -74,7 +74,7 @@ void MultipleDatabaseQueriesTest::processQuery(Context *c, QSqlQuery &query)
 {
     QJsonArray array;
 
-    int queries = c->request()->queryParam(QStringLiteral("queries")).toInt();
+    int queries = c->request()->queryParam(u"queries"_qs).toInt();
     if (queries < 1) {
         queries = 1;
     } else if (queries > 500) {
@@ -84,11 +84,11 @@ void MultipleDatabaseQueriesTest::processQuery(Context *c, QSqlQuery &query)
     for (int i = 0; i < queries; ++i) {
         const int id = (rand() % 10000) + 1;
 
-        query.bindValue(QStringLiteral(":id"), id);
+        query.bindValue(u":id"_qs, id);
         if (Q_LIKELY(query.exec() && query.next())) {
             array.append(QJsonObject{
-                             {QStringLiteral("id"), query.value(0).toInt()},
-                             {QStringLiteral("randomNumber"), query.value(1).toInt()}
+                             {u"id"_qs, query.value(0).toInt()},
+                             {u"randomNumber"_qs, query.value(1).toInt()}
                          });
         } else {
             c->res()->setStatus(Response::InternalServerError);
diff --git a/frameworks/C++/cutelyst/src/plaintexttest.cpp b/frameworks/C++/cutelyst/src/plaintexttest.cpp
index 770ba9ae6b4..d9f2afb259b 100644
--- a/frameworks/C++/cutelyst/src/plaintexttest.cpp
+++ b/frameworks/C++/cutelyst/src/plaintexttest.cpp
@@ -8,6 +8,6 @@ PlaintextTest::PlaintextTest(QObject *parent) : Controller(parent)
 void PlaintextTest::plaintext(Context *c)
 {
     Response *res = c->response();
-    res->setBody(QByteArrayLiteral("Hello, World!"));
-    res->setContentType(QStringLiteral("text/plain"));
+    res->setBody("Hello, World!"_qba);
+    res->setContentType("text/plain"_qba);
 }
diff --git a/frameworks/C++/cutelyst/src/singledatabasequerytest.cpp b/frameworks/C++/cutelyst/src/singledatabasequerytest.cpp
index 7c610305adb..3b1d3e5836f 100644
--- a/frameworks/C++/cutelyst/src/singledatabasequerytest.cpp
+++ b/frameworks/C++/cutelyst/src/singledatabasequerytest.cpp
@@ -76,16 +76,16 @@ void SingleDatabaseQueryTest::db_asql_pipeline_pg(Context *c)
 void SingleDatabaseQueryTest::db_postgres(Context *c)
 {
     QSqlQuery query = CPreparedSqlQueryThreadForDB(
-                QLatin1String("SELECT id, randomNumber FROM world WHERE id = :id"),
-                QStringLiteral("postgres"));
+                u"SELECT id, randomNumber FROM world WHERE id = :id"_qs,
+                u"postgres"_qs);
     processQuery(c, query);
 }
 
 void SingleDatabaseQueryTest::db_mysql(Context *c)
 {
     QSqlQuery query = CPreparedSqlQueryThreadForDB(
-                QLatin1String("SELECT id, randomNumber FROM world WHERE id = :id"),
-                QStringLiteral("mysql"));
+                u"SELECT id, randomNumber FROM world WHERE id = :id"_qs,
+                u"mysql"_qs);
     processQuery(c, query);
 }
 
@@ -93,14 +93,14 @@ void SingleDatabaseQueryTest::processQuery(Context *c, QSqlQuery &query)
 {
     int id = (rand() % 10000) + 1;
 
-    query.bindValue(QStringLiteral(":id"), id);
+    query.bindValue(u":id"_qs, id);
     if (Q_UNLIKELY(!query.exec() || !query.next())) {
         c->res()->setStatus(Response::InternalServerError);
         return;
     }
 
     c->response()->setJsonObjectBody({
-                                         {QStringLiteral("id"), query.value(0).toInt()},
-                                         {QStringLiteral("randomNumber"), query.value(1).toInt()}
+                                         {u"id"_qs, query.value(0).toInt()},
+                                         {u"randomNumber"_qs, query.value(1).toInt()}
                                      });
 }