Mongo请求缓慢

Question

我尝试了一百万次使用的Mongo。我的要求非常慢。

您有什么想法来优化它吗？

db.financial_transaction.runCommand({ 
    "aggregate": "financial_transaction", 
    "pipeline": [ { 
        "$match": { 
            "transaction_type": { "$in": [ 1, 2 ] }, 
            "created_at": { "$gte": new ISODate("2016-03-13T00:00:00+01:00"), "$lte": new ISODate("2017-12-13T23:59:00+01:00") }, 
            "type": { "$in": [ "A", "C", "E" ] }, 
            "sid": { "$in": [ 1, 3, 7, 9, 11, 13 ] }, 
            "context": { "$in": [ "CL", "RE" ] } } 
        }, { 
       "$group": { "_id": { "paymentType": "$payment_type", 
                            "paymentMethod": "$payment_method", 
                            "responseCode": "$response_code", 
                            "reasonCode": "$reason_code" 
         }, 
        "count": { "$sum": 1 }, "total_amount": { "$sum": "$requested_amount" } } }, { "$sort": { "count": -1 } } ] 
});

索引：

_id_
idx_context
idx_payment_method
idx_response_code
idx_reason_code
idx_created_at
idx_transaction_type
idc_payment_method_created_at_transaction_type_origin_auth_system
idx_created_at_context_transaction_type
idx_updated_at

我对解释结果提出了要点：https://gist.github.com/sanchobouillant/bd59403242ebb1ec45582dff74b457a2