metrics

Spring cloud微服务安全实战-7-3prometheus环境搭建

风格不统一 提交于 2019-12-07 12:00:30
Prmetheus 主要用来做来Metrics的监控和报警,这张图是官方的架构图。 这是他的核心 它的作用是根据我们的配置去完成数据的采集、服务的发现,以及数据的存储。 这是服务的发现,通过Service discovery,prmethesu就会知道去哪里采集数据。Service discovery有两种形式,一种是是静态的,就是通过文件去配。告诉它你要去哪拿这个Metrics的数据,另一种就是动态的,通过zookeeper或者其他的一些配置中心,配置中心里面的数据变化的时候,Prometheus也跟着变,去不同的地方去抓数据, 这都是我的应用来提供的,普罗米修斯是抓数据,是一个拉的模式,Prometheus调用我们的接口,然后把我们的数据抓走,是Prometheus来我们这拉数据,这样的好处是,对于我们的应用来说,我们不需要知道Prometheus的服务在哪的,不需要做这些配置,我们只要暴露我们的数据就看可以了。 统一在Prometheus里面来配置.这样Prometheus就可以去各种 地方抓各种各样的数据。 Pushgateway是用来支持推模式的,因为有些时候,有些数据它并不是一直存在的,比如说我们的定时任务,Prometheus来抓的时候,我的定时任务刚好没启动,那么你就抓不到数据,所以向定时任务的数据 它会发给Pushgateway一个推送网关,这个时候

Obtaining a total of two series of data from InfluxDB in Grafana

霸气de小男生 提交于 2019-12-07 10:04:39
问题 I am perplexed at this point. I spent a day or three in the deep end of Influx and Grafana, to get some graphs plotted that are crucial to my needs. However, with the last one I need to total up two metrics (two increment counts, in column value). Let's call them notifications.one and notifications.two. In the graph I would like them displayed, it would work well as a total of the two, a single graph line, showing (notifications.one + notifications.two) instead of two separate ones. I tried

Springboot with Spring-cloud-aws and cloudwatch metrics

不羁的心 提交于 2019-12-07 04:11:22
问题 I would like to start using metrics in my Springboot app and I would also like to publish them my amazon cloudwatch I know that with Springboot we can activate spring-actuator that provides in memory metrics and published them to the /metrics endpoint. I stumbled across Spring-cloud that seems to have some lib to periodically publish these metrics to Cloudwatch, however I have no clue how to set them up? There is absolutely 0 examples of how to use it. Anyone could explain what are the step

Spring Boot Actuator 'http.server.requests' metric MAX time

半城伤御伤魂 提交于 2019-12-07 01:32:54
问题 I have a Spring Boot application and I am using Spring Boot Actuator and Micrometer in order to track metrics about my application. I am specifically concerned about the 'http.server.requests' metric and the MAX statistic: { "name": "http.server.requests", "measurements": [ { "statistic": "COUNT", "value": 2 }, { "statistic": "TOTAL_TIME", "value": 0.079653001 }, { "statistic": "MAX", "value": 0.032696019 } ], "availableTags": [ { "tag": "exception", "values": [ "None" ] }, { "tag": "method",

yammer @Timed leaving values at zero

ぐ巨炮叔叔 提交于 2019-12-07 01:19:38
问题 This is a follow-up to my struggle using yammer timing annotations as described here. My spring context file has simply: <metrics:annotation-driven /> I have the following class: import com.yammer.metrics.annotation.ExceptionMetered; import com.yammer.metrics.annotation.Metered; import com.yammer.metrics.annotation.Timed; ... @Component public class GetSessionServlet extends HttpServlet { private final static Logger log = LoggerFactory.getLogger(GetSessionServlet.class); @Override public void

How can I visualize changes in a large code base quality?

偶尔善良 提交于 2019-12-07 00:02:23
问题 One of the things I’ve been thinking about a lot off and on is how we can use metrics of some kind to measure change, are we going backwards or not? This is in the context of a large, legacy code base which we are improving. Most of the code is C++ with a C heritage. Some new functions and the GUI are written in C#. To start with, we could at least be checking if the simple complexity level was changing over time in the code. The difficulty is in having a representation – we can maybe do a 3D

IoU for semantic segmentation implementation in python/caffe per class

巧了我就是萌 提交于 2019-12-06 22:26:40
Is there any recommendable per class IoU(intersection over union) per pixel accuracy(different from bounding box) implementation.I am using caffe and managed to get the mean IoU but i am having difficulty in doing IoU for per class accuracy.I would appreciate a lot if someone could point out a good implementation in any language so far this the only close semantic segmentation with multiple pixel label i ve seen so far here 来源: https://stackoverflow.com/questions/44041096/iou-for-semantic-segmentation-implementation-in-python-caffe-per-class

McCabe Cyclomatic Complexity for switch in Java

帅比萌擦擦* 提交于 2019-12-06 21:00:13
问题 I am using a switch statement with 13 cases, each case only has an one line return value. McCabe paints this in red. Is there an easier way to write a big switch statement? It doesn't seem complex to read, but I don't like the default setting turning red. If other people use the same tool on my code and see red stuff they might think I'm stupid :-) Edit: I'm mapping different SQL-Types to my own more abstract types, therefore reducing the total amount of types. case Types.TIME: return

Apache Beam Counter/Metrics not available in Flink WebUI

时光怂恿深爱的人放手 提交于 2019-12-06 20:29:32
问题 I'm using Flink 1.4.1 and Beam 2.3.0, and would like to know is it possible to have metrics available in Flink WebUI (or anywhere at all), as in Dataflow WebUI ? I've used counter like: import org.apache.beam.sdk.metrics.Counter; import org.apache.beam.sdk.metrics.Metrics; ... Counter elementsRead = Metrics.counter(getClass(), "elements_read"); ... elementsRead.inc(); but I can't find "elements_read" counts available anywhere (Task Metrics or Accumulators) in Flink WebUI. I thought this will

【tf.keras】实现 F1 score、precision、recall 等 metric

爷,独闯天下 提交于 2019-12-06 15:18:57
tf.keras.metric 里面竟然没有实现 F1 score、recall、precision 等指标,一开始觉得真不可思议。但这是有原因的,这些指标在 batch-wise 上计算都没有意义,需要在整个验证集上计算,而 tf.keras 在训练过程中计算 acc、loss 都是一个 batch 计算一次的,最后再平均起来。 Keras 2.0 版本将 precision, recall, fbeta_score, fmeasure 等 metrics 移除了。 虽然 tf.keras.metric 中没有实现 f1 socre、precision、recall,但我们可以通过 tf.keras.callbacks.Callback 实现。 一些博客实现了二分类下的 f1 socre、precision、recall,如下所示: How to compute f1 score for each epoch in Keras -- Thong Nguyen keras如何求分类问题中的准确率和召回率? - 鱼塘邓少的回答 - 知乎 以下代码实现了多分类下对验证集 F1 值、precision、recall 的计算,并且保存 val_f1 值最好的模型: import tensorflow as tf from sklearn.model_selection import