prometheus streaming

1 decrypting spark streaming operating mechanism Last lesson we talked about the technology industry's Dragon Quest. This is like Feng Shui in the past, each area has its own dragon vein, Spark is where the dragon vein, its dragon Cave or the key point is sparkstreaming. This is one of the conclusions we know very clearly in the last lesson. And in the last lesson, we adopted the way of dimensionality reduction. The so-called dimension of the way, ref

Now the continuous development and progress of network technology, the arrival of big data, so that network bandwidth increases rapidly. Because of the progress of the Times, the network and streaming media technology to show the opportunity and display, and also for the campus video Live network transmission audio and video data has laid a good foundation. The transformation of education mode of information digital education provides a good network e

Recently, I have been confused by the live streaming latency problem. For this reason, I have compiled some protocol information about common streaming media, hoping to help me solve the live streaming latency. 1. rtmp (real time messaging protocol)Real-time message transmission protocol released by Adobe. Based on TCP, this protocol is a network protocol desig

Reproduced in "Beef round powder without onions"Link: http://www.jianshu.com/p/00b591c5f623 A streaming application often requires 7*24 uninterrupted running, so it needs to be able to withstand unexpected abilities (such as machine or system hangs, JVM crash, etc.). To make this possible, Spark streaming needs to checkpoint enough information to a fault-tolerant storage system in order for application to r

This article reprint please from: Http://qifuguang.me/2015/12/24/Spark-streaming-kafka actual combat course/ Overview Kafka is a distributed publish-subscribe messaging system, which is simply a message queue, and the benefit is that the data is persisted to disk (the focus of this article is not to introduce Kafka, not much to say). Kafka usage scenarios are still relatively large, such as buffer queues between asynchronous systems, and in many scen

of queries per second, and each page may contain multiple ads. To handle user feedback in a timely manner, a low latency, scalable, and highly reliable processing engine is required. However, for these applications with high real-time requirements, although MapReduce has made real-time improvements, it is still difficult to meet the application requirements stably. Because Hadoop is highly optimized for batch processing, MapReduce systems typically operate static data by dispatching bulk tasks,

1. Why to use HTTP Live streamingRefer to WikipediaHTTP Live Streaming (abbreviated as HLS) is an HTTP-based streaming network Transfer protocol proposed by Apple. is part of Apple's QuickTime X and iphone software system. It works by dividing the entire stream into small HTTP-based files to download, one at a time. When media streaming is playing, clients can ch

Http://www.cnblogs.com/haibindev/archive/2013/01/30/2880764.htmlInadvertently found that the big six months did not write a blog, consciously ashamed. In fact, after 2012 half a year, the things in the family happened the same, there is no time. Fast New Year, finally sneak in, the recent technical achievements, summed up into the article, share with you.Some days ago, it was also a project need, spent some time studying HTTP live streaming(HLS) techn

Based on the current situation of domestic streaming media technology application, to see the major Internet video portals mainly live video and video-on-demand these two, and streaming media applications in the education industry is also in these two ways to express. Because of the development of streaming media, some new teaching models and methods have been cr

Analysis and Implementation of HTTP live streaming technology I accidentally discovered that I had not written a blog for more than half a year and felt ashamed. In fact, in the second half of 2012, the same thing happened at home, and there was no time. After the Chinese New Year, I finally spent some time in my work and summarized some recent technical achievementsArticleTo share with you. A few days ago, it was also a project requirement and too

The Python version of the original Liunx is not numpy, and Anaconda Python cannot be invoked with Hadoop streaming when Anaconda is installed.Later found that the parameters are not set up well ...Go to the Chase:Environment:4 Servers: Master slave1 slave2 slave3.all installed anaconda2 and Anaconda3, the main environment py2. Anaconda2 and Anaconda3 coexistence see:Ubuntu16.04 liunx installation Anaconda2 and Anaconda3Installation directory:/home/ori

For text chat rooms, as well as multiple screen interaction, we understand a lot more, I know there are two kinds of sockets and XMPP protocol. If we use Red5, a streaming media server based on Flash, in the development of live video, or voice chat rooms, we can use RTMP,RTSP. One, what is the main feature of the Red5 Red5 is similar to the Macromedia Company's FMS, a Java based Open-source streaming m

audio also gradually network, this is we talked about the multimedia network, the network is by the video, the audio rich content, has developed the form. We can describe the network as a huge library, a huge video, audio library, where we can find any video, audio files we want, and easily download to the local machine. And the realization of the broadband technology provides a favorable condition for the online audio-visual on the network. At this point, we are really in touch with

From: http://www.cnblogs.com/riky/archive/2007/03/04/663269.html 1. Introduction to streaming media The volume of multimedia information is large. audio/video and other information are transmitted over the network in two ways: Download and stream transmission. Streaming Transmission adopts the principle of receiving and playing, that is, the data stream is transmitted continuously and in real time by

On Android, video/audio streaming is a very rare part of the spotlight. RTMP (Real time Messaging Protocol) is indispensable whenever we discuss streaming media. RTMP is a basic video/audio streaming protocol, but unfortunately Android standard Videoview does not support rtmp playback. Therefore, if you want to play rtmp live

Time. Duration)) Error {cmd:= Exec.command ("FFmpeg", args ...) ifcallback = =Nil {var cmderr bytes. Buffer cmd. Stderr= CmderrifERR: = cmd. Run (); Err! =Nil {return extracterror (err, cmderr.string ())} return nil}//ffmpeg stdout is stderrstderr, err: =cmd. Stderrpipe ()ifErr! =Nil {return err}W, Err: =Newwatcher (stderr, callback)ifErr! =Nil {return err} deferW. Close () defer cmd. Process.wait ()ifERR: = cmd. Run (); Err! =Nil {return err} return nil}View CodeThe Go language call context pu

First demo. Waterfall Flow Sort: http://cued.xunlei.com/demos/publ/demo1.html Waterfall Flow + Infinite drag http://cued.xunlei.com/demos/publ/demo2.html With the popularity of Pinterest, waterfall streaming layout is used by more and more sites, this layout does have a lot of benefits, the Picture List page has a strong visual appeal, but also improve the user "find a good map" efficiency. Waterfall flow to achieve a number of ways, before the Tao

The ability to use AJAX to generate streaming file downloads can be used to hide the form. Need friends can refer to the following copy code code as follows: //Binding export button $ ("#btnExport"). Clickchecklogin (function () { var form = $ (" form.attr (' style ', ' display:none '); form.attr (' target ', '); form.attr (' method ', ' post '); form.attr (' action ', ' ajaxpost.aspx '); var input1 = $ (' input1.attr (' type ', ' hi

This article mainly introduces the PHP Streams (stream) detailed introduction and use, PHP Streams is a built-in core operation, may not be commonly used by developers, it is used for unified file, network, data compression and other types of file operation mode, and for these types of file operations to provide a set of common function interface, Need friends can refer to the following PHP streams is a built-in core operation, probably rarely used by ordinary developers, it is used for unified

JMF can be implemented in the RTP media stream playback (playback) and transmission (transmission), mainly by JAVAX.MEDIA.RTP, Javax.media.rtp.event, and the API defined in the JAVAX.MEDIA.RTP.RTCP package is complete. JMF can support specific RTP formats and dynamic loads through a standard JMF plug-in mechanism. You can play the RTP data stream locally or store it in a local file. Similarly, you can use the RTP API in JMF to transfer captured or stored media