diff --git a/.gitea/workflows/build_dashboard.yaml b/.gitea/workflows/build_dashboard.yaml
index cbd066f..b8e47bb 100644
--- a/.gitea/workflows/build_dashboard.yaml
+++ b/.gitea/workflows/build_dashboard.yaml
@@ -23,22 +23,34 @@ jobs:
         with:
           node-version: '24'
 
+      - name: Hash source files
+        id: hash-src
+        run: echo "hash=$(find apps/dashboard-ui -type f \( -name '*.vue' -o -name '*.ts' -o -name '*.js' -o -name '*.css' -o -name '*.json' -o -name '*.html' \) | sort | xargs sha256sum | sha256sum | cut -d' ' -f1)" >> "$GITHUB_OUTPUT"
+
+      - uses: actions/cache@v3
+        id: cache-build
+        with:
+          path: apps/dashboard-ui/dist
+          key: build-dashboard-${{ steps.hash-src.outputs.hash }}
+
       - name: Hash package-lock
         id: hash-npm
         run: echo "hash=$(sha256sum apps/dashboard-ui/package-lock.json | cut -d' ' -f1)" >> "$GITHUB_OUTPUT"
 
       - uses: actions/cache@v3
+        id: cache-npm
         with:
-          path: |
-            ~/.npm
+          path: ~/.npm
           key: npm-dashboard-${{ steps.hash-npm.outputs.hash }}
           restore-keys: npm-dashboard-
 
       - name: Install
+        if: steps.cache-build.outputs.cache-hit != 'true'
         working-directory: apps/dashboard-ui
         run: npm ci || npm install
 
       - name: Build
+        if: steps.cache-build.outputs.cache-hit != 'true'
         working-directory: apps/dashboard-ui
         run: npm run build
 
diff --git a/.gitea/workflows/build_device_agent.yaml b/.gitea/workflows/build_device_agent.yaml
index 4b3d614..db95c10 100644
--- a/.gitea/workflows/build_device_agent.yaml
+++ b/.gitea/workflows/build_device_agent.yaml
@@ -24,13 +24,29 @@ jobs:
           go-version: '1.26'
           cache: true
 
+      - uses: https://gitea.com/actions/go-hashfiles@v0.0.1
+        id: hash-src
+        with:
+          patterns: |
+            apps/device-agent/**/*.go
+            apps/device-agent/go.mod
+            apps/device-agent/go.sum
+
+      - uses: actions/cache@v3
+        id: cache-build
+        with:
+          path: apps/device-agent/bin
+          key: build-device-agent-${{ steps.hash-src.outputs.hash }}
+
       - name: Generate Windows resources (UAC manifest + icon)
+        if: steps.cache-build.outputs.cache-hit != 'true'
         working-directory: apps/device-agent
         run: |
           go install github.com/tc-hib/go-winres@latest
           go-winres make
 
       - name: Build all platforms
+        if: steps.cache-build.outputs.cache-hit != 'true'
         working-directory: apps/device-agent
         shell: bash
         run: |
diff --git a/.gitea/workflows/build_server_core.yaml b/.gitea/workflows/build_server_core.yaml
index aa150b1..86b2564 100644
--- a/.gitea/workflows/build_server_core.yaml
+++ b/.gitea/workflows/build_server_core.yaml
@@ -24,7 +24,22 @@ jobs:
           go-version: '1.26'
           cache: true
 
+      - uses: https://gitea.com/actions/go-hashfiles@v0.0.1
+        id: hash-src
+        with:
+          patterns: |
+            apps/server-core/**/*.go
+            apps/server-core/go.mod
+            apps/server-core/go.sum
+
+      - uses: actions/cache@v3
+        id: cache-build
+        with:
+          path: apps/server-core/bin
+          key: build-server-core-${{ steps.hash-src.outputs.hash }}
+
       - name: Build
+        if: steps.cache-build.outputs.cache-hit != 'true'
         working-directory: apps/server-core
         run: go build -o bin/server-core .