feat: fast down api

.github/workflows/coverage.yml

@@ -0,0 +1,45 @@
+name: Coverage
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  coverage:
+    name: Code Coverage
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: llvm-tools-preview
+
+      - name: Cache
+        uses: swatinem/rust-cache@v2
+        with:
+          shared-key: "ubuntu-stable-coverage"
+          add-job-id-key: "false"
+          cache-on-failure: "true"
+          cache-all-crates: "true"
+          cache-workspace-crates: "true"
+          save-if: ${{ github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master' }}
+
+      - name: Install cargo-llvm-cov
+        uses: taiki-e/install-action@v2
+        with:
+          tool: cargo-llvm-cov
+
+      - name: Generate coverage (lcov)
+        run: cargo llvm-cov --workspace --all-features --lcov --output-path lcov.info
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v7
+        with:
+          files: lcov.info
+          fail_ci_if_error: false