diff --git a/.github/actions/be/action.yml b/.github/actions/be/action.yml
index 512c6d57..aacfb6d5 100644
--- a/.github/actions/be/action.yml
+++ b/.github/actions/be/action.yml
@@ -15,10 +15,12 @@ runs:
         ini-values: opcache.enable_cli=1
       env: # https://github.com/shivammathur/setup-php/blob/6d7209f44a25a59e904b1ee9f3b0c33ab2cd888d/README.md#force-update-setup
         update: 'true'
-    # https://github.com/shivammathur/setup-php/blob/6d7209f44a25a59e904b1ee9f3b0c33ab2cd888d/README.md#cache-composer-dependencies
+    # https://github.com/shivammathur/setup-php/blob/6d7209f44a25a59e904b1ee9f3b0c33ab2cd888d/README.md#problem-matchers
     - run: echo "::add-matcher::${{ runner.tool_cache }}/php.json"
       working-directory: be
       shell: bash
+    # https://github.com/shivammathur/setup-php/blob/6d7209f44a25a59e904b1ee9f3b0c33ab2cd888d/README.md#cache-composer-dependencies
+    # https://github.com/actions/cache/blob/a2ed59d39b352305bdd2f628719a53b2cc4f9613/examples.md#php---composer
     - id: composer-cache
       run: echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
       working-directory: be
@@ -26,8 +28,14 @@ runs:
     - uses: actions/cache@v4
       with:
         path: ${{ steps.composer-cache.outputs.dir }}
-        key: ${{ runner.os }}-composer-${{ hashFiles('be/composer.lock') }}
+        key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
         restore-keys: ${{ runner.os }}-composer-
     - run: composer install --prefer-dist
       working-directory: be
       shell: bash
+    # https://github.com/actions/runner/issues/1478
+    # https://github.com/actions/setup-node/issues/410#issuecomment-1939482965
+    - uses: actions/cache/save@v4
+      with:
+        path: ${{ steps.composer-cache.outputs.dir }}
+        key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
diff --git a/.github/actions/c#/action.yml b/.github/actions/c#/action.yml
index e6686bd4..cf4b4e08 100644
--- a/.github/actions/c#/action.yml
+++ b/.github/actions/c#/action.yml
@@ -9,12 +9,25 @@ runs:
     - uses: actions/setup-dotnet@v4
       with: # https://github.com/actions/setup-dotnet/tree/v4
         dotnet-version: 7
-        cache: true
-        # https://github.com/actions/setup-node/issues/624#issuecomment-1328681525
-        cache-dependency-path: ${{ github.workspace }}/c#/*/packages.lock.json
+        # cache: true
+        # # https://github.com/actions/setup-node/issues/624#issuecomment-1328681525
+        # cache-dependency-path: ${{ github.workspace }}/c#/*/packages.lock.json
+        # in favor of https://github.com/actions/cache/blob/a2ed59d39b352305bdd2f628719a53b2cc4f9613/examples.md#c---nuget
+        # to allow saving cache even jobs failed
+    - uses: actions/cache@v4
+      with:
+        path: ~/.nuget/packages
+        key: ${{ runner.os }}-nuget-${{ hashFiles('**/packages.lock.json') }}
+        restore-keys: ${{ runner.os }}-nuget-
     - run: dotnet new globaljson --sdk-version 7.0.405
       working-directory: c#
       shell: bash
     - run: dotnet restore
       working-directory: c#
       shell: bash
+    # https://github.com/actions/runner/issues/1478
+    # https://github.com/actions/setup-node/issues/410#issuecomment-1939482965
+    - uses: actions/cache/save@v4
+      with:
+        path: ~/.nuget/packages
+        key: ${{ runner.os }}-nuget-${{ hashFiles('**/packages.lock.json') }}
diff --git a/.github/actions/fe/action.yml b/.github/actions/fe/action.yml
index 546d7ec2..d7b5cf0c 100644
--- a/.github/actions/fe/action.yml
+++ b/.github/actions/fe/action.yml
@@ -7,10 +7,26 @@ runs:
     - uses: actions/setup-node@v4
       with: # https://github.com/actions/setup-node/tree/v4
         node-version: lts/*
-        cache: yarn
-        # https://github.com/actions/setup-node/issues/624#issuecomment-1328681525
-        cache-dependency-path: ${{ github.workspace }}/fe/yarn.lock
-    - name: install
-      run: yarn install --immutable
+        # cache: yarn
+        # # https://github.com/actions/setup-node/issues/624#issuecomment-1328681525
+        # cache-dependency-path: ${{ github.workspace }}/fe/yarn.lock
+        # in favor of https://github.com/actions/cache/blob/a2ed59d39b352305bdd2f628719a53b2cc4f9613/examples.md#node---yarn-2
+        # to allow saving cache even jobs failed
+    - id: yarn-cache-dir-path
+      run: echo "dir=$(yarn config get cacheFolder)" >> $GITHUB_OUTPUT
       working-directory: fe
       shell: bash
+    - uses: actions/cache@v3
+      with:
+        path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+        key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+        restore-keys: ${{ runner.os }}-yarn-
+    - run: yarn install --immutable
+      working-directory: fe
+      shell: bash
+    # https://github.com/actions/runner/issues/1478
+    # https://github.com/actions/setup-node/issues/410#issuecomment-1939482965
+    - uses: actions/cache/save@v4
+      with:
+        path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+        key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
diff --git a/.github/workflows/fe.yml b/.github/workflows/fe.yml
index 33273113..ebcf29ed 100644
--- a/.github/workflows/fe.yml
+++ b/.github/workflows/fe.yml
@@ -1,7 +1,7 @@
 name: fe
 on:
   push:
-    paths: [fe/**]
+    #paths: [fe/**]
 defaults:
   run:
     working-directory: fe