arrays - 如何通过MongoDB中的两个及更多数组字段来提高查询性能？

Question

我收集了具有多个数组字段的对象。就像是：

{
    sponsors: {
      lead_sponsor: {
         name: "Mark",
         type: "Individual"
      }
      collaborators: [
         {name: "Company Ltd.", type: "Company"},
         {name: "Industry Company Ltd.", type: "Company"}
      ]
    },
    terms: ["Some term", "Some term 2", "Some term 3"],
    keywords: ["word1", "word2", "word3", "word4"],
    description: "Here might be big text with detailed description",
    status: "Active",
}

如何优化下一个查询？

{
  status: "Active", 
  $or: [
    {"lead_sponsor.name": /company/i}, 
    {"collaborators.name": /company/i},
    {"terms": /phrase/i},
    {"keywords": /phrase/i},
    {"description": /phrase/i},
  ]
}

复合索引不能有多个数组字段。如果我将数组字段中的所有数据复制到新字段中searchArray并添加仅包含此数组的复合索引会有帮助吗？这是好方法吗？