{"test":"etag","cacheControl":"public, max-age=3600","description":"支持 ETag + Last-Modified 条件请求。首次返回 200，后续 If-None-Match 匹配时返回 304","etag":"\"e7be5593ba500dc98a8e15236b832f83\"","lastModified":"Wed, 01 Jan 2025 00:00:00 GMT","content":"这是一段固定的内容，用于 ETag 条件请求测试","timestamp":"2026-07-22T10:18:33.499Z"}