Question

我正在.NET核心应用程序中使用Serilog进行日志记录。

我以两种方式记录日志，我不确定一种方法是否比另一种效率更高。

使用$前缀序列化属性

 _logger.LogInformation($"consumer:{_consumer.ConsumerName}. clientId:{_consumer.ClientId}." +
                                       $"max_handle_latency:{_maxHandleMessageLatencyInterval}." +
                                       $"total_consume_requests:{_numConsumingOperatonsInInterval}. topics:{topics}");

不使用$-通过将参数传递给模板。

 _logger.LogInformation("producer:{name}. total_produce_requests:{total_produce_requests}. max_latency:{max_latency}. intervalInMs:{interval_in_ms}. topics:{topics}",
                                  _kafkaProducer.Name,
                                  _numProduceOperationsInInterval,
                                  _maxLatencyInInterval,
                                  _producerIntervalInMs,
                                  string.Join(",", topics));

这将导致这两个不同的日志语句。查看MessageTemplate和属性。

1。

{
    "Timestamp": "2020-09-29T11:58:39.0343478-07:00",
    "Level": "Information",
    "MessageTemplate": "consumer:DotNetCoreReferenceApplication-myhost#consumer-7. clientId:DotNetCoreReferenceApplication-BL-9HQ76S2.max_handle_latency:35.total_consume_requests:1356. topics:bl-perf",
    "Properties": {
        "SourceContext": "MySvc.Messaging.EventsHub.MyConsSvc",
        "ThreadId": 27,
        "ActionId": "c1bbd73f-634b-44dc-aa3e-b2c09a097fd1",
        "ActionName": "MySvc.Messaging.Api.Controllers.ConsumerConfigController.SetConsumerConfig (MySvc.Messaging.Api)",
        "RequestId": "0HM34L5IO01I8:00000001",
        "RequestPath": "/eventhub/consumer/setconfiguration",
        "SpanId": "|6bb4afcf-4eafc985509764f0.",
        "TraceId": "6bb4afcf-4eafc985509764f0",
        "ParentId": "",
        "ConnectionId": "0HM34L5IO01I8"
    }
}

 {
        "Timestamp": "2020-09-29T12:00:39.0139328-07:00",
        "Level": "Information",
        "MessageTemplate": "producer:{name}. total_produce_requests:{total_produce_requests}. max_latency:{max_latency}. intervalInMs:{interval_in_ms}. topics:{topics}",
        "Properties": {
            "name": "DotNetCoreReferenceApplication-mydevbox#producer-6",
            "total_produce_requests": 0,
            "max_latency": 0,
            "interval_in_ms": 60000,
            "topics": "",
            "SourceContext": "MySvc.Messaging.EventsHub.Producer.EventBusProducer",
            "ThreadId": 8,
            "ActionId": "c1bbd73f-634b-44dc-aa3e-b2c09a097fd1",
            "ActionName": "MySvc.Messaging.Api.Controllers.ConsumerConfigController.SetConsumerConfig (MySvc.Messaging.Api)",
            "RequestId": "0HM34L5IO01I8:00000001",
            "RequestPath": "/eventshub/perf/csmr/config",
            "SpanId": "|6bb4afcf-4eafc985509764f0.",
            "TraceId": "6bb4afcf-4eafc985509764f0",
            "ParentId": "",
            "ConnectionId": "0HM34L5IO01I8"
        }
    }

尽管后者看起来不如第一个可读，但似乎更有意义，因为您希望模板是模板，好吧！因此，我怀疑如果Serilog缓存模板或类似的东西，第二种方法会更有效。

第一个看起来更易读，但是模板包含实际的log语句。

Answer 1

第二个（使用消息模板）效率更高。

在第一个示例中，即使该级别的日志记录为“关闭”，消息也始终被格式化。在第二个示例中，只有在实际需要时才进行格式化。

使用df5 = df4 \ .groupby("arrival_date", "store_id", "warehouse_id", "class_id", "cloth_id") \ .agg(F.sum("quantity2").alias("want")) \ .withColumnRenamed("arrival_date", "Date") df5.orderBy('Date').show() +----------+--------+------------+--------+--------+----+ | Date|store_id|warehouse_id|class_id|cloth_id|want| +----------+--------+------------+--------+--------+----+ |2020-08-04| 110| 1| 11010| M_1| 10| |2020-08-06| 111| 1| 11010| M_2| 5| |2020-08-06| 110| 1| 11010| M_1| 1| |2020-08-07| 110| 1| 11010| M_1| 3| +----------+--------+------------+--------+--------+----+（字符串插值）也会阻碍Serilog的内部模板缓存，从而进一步降低性能。

https://nblumhardt.com/2016/07/event-types-structured-logging-concepts-in-net-4/对模板为何有用的问题进行了进一步的讨论。

.NET中Serilog中更有效的日志记录是什么？

1 个答案: