[Java] simulating QPS

On the Web server side, the daily traffic is huge. In a non-production environment, stress testing of the server is required, typically using a background thread and sleep mode to simulate the stress on the line. Here a simple QPS test code is implemented using Scheduledexecutorservice.

Qpsproxy:

Import Com.google.common.base.preconditions;import Org.apache.commons.lang3.math.numberutils;import Org.slf4j.logger;import Org.slf4j.loggerfactory;import Java.util.concurrent.executors;import Java.util.concurrent.scheduledexecutorservice;import java.util.concurrent.timeunit;/** * If the runable execution time exceeds MAX_QPS/ QPS, the actual QPS will be lower than the actual value.    */public class Qpsproxy {private final Logger Logger = Loggerfactory.getlogger (Qpsproxy.class);    Private final static int max_qps = 1000;    Private Scheduledexecutorservice Scheduledexecutorservice;    Private long QPS = Numberutils.long_one;    Private Runnable Runnable;    Private long Delay2start = Numberutils.integer_zero;    private int threads = 10; Public Qpsproxy () {} public Scheduledexecutorservice Getscheduledexecutorservice () {return Scheduledexecuto    Rservice; } public void Setscheduledexecutorservice (Scheduledexecutorservice scheduledexecutorservice) {This.scheduledExe    Cutorservice = Scheduledexecutorservice;  }  Public long Getqps () {return QPS;        } public void Setqps (long QPS) {preconditions.checkargument (QPS < MAX_QPS, "set the QPS above the upper limit value:" + MAX_QPS);    THIS.QPS = QPS;    } public Runnable getrunnable () {return Runnable;    } public void Setrunnable (Runnable Runnable) {this.runnable = Runnable;    } public Long Getdelay2start () {return delay2start;    } public void Setdelay2start (long delay2start) {this.delay2start = Delay2start;    } public int getthreads () {return threads;    } public void Setthreads (int threads) {this.threads = threads;        } public void Start () {Preconditions.checknotnull (runnable, "set task performed");        Long period = (long) Math.floor ((double) max_qps/qps);        Logger.info ("interval: {}MS", period);        Scheduledexecutorservice = Executors.newscheduledthreadpool (threads); Scheduledexecutorservice.scheduleatfixedrate (runnable, Delay2start, period, TiMeunit.milliseconds);        } public void Stop () {preconditions.checknotnull (Scheduledexecutorservice, "task not Started");    Scheduledexecutorservice.shutdown (); }}

Build Tool:

Import Com.google.common.base.preconditions;public class Qpsproxybuilder {private Qpsproxy qpsproxy = new Qpsproxy ();    public static Qpsproxybuilder Newbuilder () {return new Qpsproxybuilder (); } public Qpsproxybuilder Withdelay2start (long delay2timebymillisseconds) {preconditions.checkargument (Delay2Tim        Ebymillisseconds > 0);        Qpsproxy.setdelay2start (Delay2timebymillisseconds);    return this;        } public Qpsproxybuilder Withqps (long QPS) {preconditions.checkargument (QPS > 0);        QPSPROXY.SETQPS (QPS);    return this;        } public Qpsproxybuilder withrunnable (Runnable Runnable) {preconditions.checknotnull (Runnable);        Qpsproxy.setrunnable (runnable);    return this;        } public qpsproxybuilder withthreads (int threads) {preconditions.checknotnull (Threads > 0);        Qpsproxy.setthreads (threads);    return this;    } public Qpsproxy Build () {return qpsproxy; }}

Test code:

Import Com.qunar.hotel.qps.qpsproxy;import Com.qunar.hotel.qps.qpsproxybuilder;import Org.junit.Test;import Org.slf4j.logger;import Org.slf4j.loggerfactory;public class QPS {    private final Logger Logger = Loggerfactory.getlogger (GetClass ());    @Test public    void Testbasic () throws Interruptedexception {        Qpsproxy proxy = Qpsproxybuilder.newbuilder (). WITHQPS (+). Withthreads (1). Withdelay2start (4000). Withrunnable (New Runnable () {            private int counter = 0;            @Override public            Void Run () {                logger.info ("{}-{}:{}", Thread.CurrentThread (). GetName (), System.nanotime (), counter++);            }        ). Build ();        Proxy.start ();        Thread.CurrentThread (). Sleep (5020L);        Proxy.stop ();    }}

　　

[Java] simulating QPS