, if users according to the age of user classification simple classification-youth. Middle age, old age. The basic characteristics of measuring user purchasing ability are divided into the following five categories: time processing characteristics. Location processing characteristics, consumption processing characteristics. Commodity type processing characteristics and potential purchase characteristics; Abstract classes define multiple hook functions according to the computed dimension. Realize
I. Summary
Dispatchers is the heart of the Akka application and this is what makes itHumming. Routers on the other hand, route incoming messages to outbound actors II, Dispatcher type
DispatcherFeatures are as follows:
Every actor is backed by its own mailboxthe dispatcher can is shared with any number of actorsthe dispatcher can be backed by either thread pool or fork join poolthe dispatcher is optimized for non-blocking code
Pinned DispatcherCharac
Label:Train Spark architecture Development!from basic to Advanced, one to one Training! [Technical qq:2937765541]--------------------------------------------------------------------------------------------------------------- ------------------------Course System:Get video material and training answer technical support addressCourse Presentation ( Big Data technology is very wide, has been online for you training solutions!) ):Get video material and training answer technical support addressSpa
How to package into a jar package:File, Project structure, artfact, point +, JAR, from modules with dependencies ...Select Module----click OK to specify main class.DT Big Data Dream Factory public account: Dt_spark.DT Big Data Dream Factory's public number is Dt_spark, every day will have big data actual combat video release, please continue to study.Liaoliang DT Big Data dream factory Scala all videos, PPT and code in Baidu Cloud disk link:http://pan.baidu.com/share/home?uk=4013289088#category/
Masteractor the way to initialize Mapactor,reduceactor,aggregateactor.DT Big Data Dream Factory public account: Dt_spark.DT Big Data Dream Factory's public number is Dt_spark, every day will have big data actual combat video release, please continue to study.Liaoliang DT Big Data dream factory Scala all videos, PPT and code in Baidu Cloud disk link:http://pan.baidu.com/share/home?uk=4013289088#category/type=0 Qq-pf-to=pcqq.groupQQ Group:DT Big Data Dream Factory ①:462923555DT Big Data Dream Fact
Install the SBT plug-in File--Setting---Plugins, enter SBT, select SBT, click the Install button.Idea will restart.Enter project name, New project, Scala, SBT.DT Big Data Dream Factory public account: Dt_spark.DT Big Data Dream Factory's public number is Dt_spark, every day will have big data actual combat video release, please continue to study.Liaoliang DT Big Data dream factory Scala all videos, PPT and code in Baidu Cloud disk link:http://pan.baidu.com/share/home?uk=4013289088#category/type=
Actorsystem composed of cluster def main (args:array[string]): Unit = { if (args.isempty) startup (Seq ("2551", "2552", "0")) else Startup (args) } def startup (Ports:seq[string]): Unit = { ports foreach {port = //Override the CONFI Guration of the port val config = configfactory.parsestring ("akka.remote.netty.tcp.port=" + port). Withfallback (Configfactory.load ()) //Create an Akka system val system
This article is a detailed analysis of the use of PHP performance testing tools in the production environment xhprof, the need for a friend reference
Xhprof is a PHP performance testing tool that is open source for Facebook, and it can also be called the Profile tool, a word that doesn't know how to translate. There are many similarities compared to the xdebug that have been used before. Previously there
: 1.gatling:http://gatling.io/#/
Gatling is a Open-source load testing framework based on Scala, Akka and NettyHigh performanceReady-to-present HTML ReportsScenario Recorder and developer-friendly DSL
Test script for Scala, short board: No TPS data, Pros: The results are graphically displayed clearly.Some screenshots:
Quick Start: http://gatling.io/docs/2.1.7/Website download too slow, has been uploaded to Csdn, download address: http://download.csdn.
This is the fourth part of agile development performance management. (One, two, three, four, five, six, and seven)
I recently read Drucker's book and found that it clearly states the concept and statement "enterprise performance only exists outside, while enterprise internal cost only, next, let's talk about the performance appraisal of the agile development
SQL Performance Optimization-Methods for locating network performance problems (DEMO) and performance optimization demo
Recently, my colleague from the project team told me that he encountered an SQL Performance problem. He said that there were only 69 records in the table, and it took more than two minutes to execute
Label:Poptest is the only training institute for developing Test and development engineers in China, aiming at the ability of the trainees to be competent in automated testing, performance testing and testing tools development. In Poptest's LoadRunner training, in order to improve the performance of students experience, add a lot of server optimization knowledge, for pe
High Performance MySQL Reading Notes-query performance optimization, high performance mysql
For high-performance database operations, it is not enough to design the optimal database table structure and build the best index. You also need to design the query reasonably. If the query is poorly written, high
CSS performance analysis, how to optimize CSS to improve performance, css PerformanceI will not be able to afford myself for ten years!
Frontend performance optimization has always been a hot topic. We are always doing our best to improve our page performance, such as reducing HTTP requests and using tools to merge and
Label:This paper mainly explains MySQL performance bottleneck analysis, performance indicators, performance index information collection tools and methods, analysis of the use of tuning tools.The article has not been completed, the following is an outline.Performance bottlenecks:SlowPerformance Index:Frequency of VisitsNumber of concurrent connectionsCache Hit Ra
I. Language performance optimization
1. Using the AB tool under Apache for performance testingTest: ab-n100-c100 https://www.baidu.com/(Request 100 times, concurrency is 100)Focus on two volumes:Requests per second (number of requests per second) and time per request (average response times)2. Try to use PHP built-in variables, constants, functions, Reason: PHP code needs to go through the Zend Engine to
the time of the command installation.Check performancePhp-dvld.active =1–dvld.execute=0 test.phpVLD extension of the main two parameter list-dvld.active defaults to 0. Represents whether the PHP file that is running is active VLD hooks,-dvld.execute defaults to 1. Represents only the intermediate code, does not execute the generated intermediate code, can be set to 0, indicating that the intermediate generation code is not executedMore list of parameters can be BaiduAlso refer to: http://blog.c
Performance bottlenecks:Slow, write faster than read The main performance indicators:Frequency of visits,The number of concurrent connections,Cache Hit Ratio,Index use,Slow log opening and analysis,Query log, querying logThreads_cached: Whether the connection thread cache is turned onThread_cache_size: The size of the number of thread cachesQuery_cache_size: Query Cache SizeJoin_buffer_size:join Buffer Size
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