Shinsuke Sugaya <******@****.***> 1565573181 +0900

     */
    public static final String ROLE = "admin-backup";

    private static final Logger logger = LogManager.getLogger(AdminBackupAction.class);

    /**
     * The ndjson extension.
     */
    public static final String NDJSON_EXTENTION = ".ndjson";

    private static final DateTimeFormatter ISO_8601_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSS");

    @Resource

4. Click **Import** to process

### 2. REST API Import

#### Bulk Document API

**Endpoint**: `PUT /api/admin/documents/bulk`

**Format**: NDJSON (Newline-Delimited JSON)

**Example**:
```bash
# Create NDJSON file
cat > documents.ndjson << 'EOF'
{"url":"http://example.com/page1","title":"Page 1","content":"Content here..."}
{"url":"http://example.com/page2","title":"Page 2","content":"More content..."}
EOF

          schema:
            type: string
            example: score
      responses:
        '200':
          description: Successful operation
          content:
            application/x-ndjson:
              schema:
                type: string
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':