Windows installs RocketMQ to send messages regularly at any time

System environment

System: window 10
JDK: java version “11.0.21”
ROCKETMQ: rocketmq-all-5.1.4-bin-release

Installation steps

rocketMq download address official website: http://rocketmq.apache.org/dowloading/releases/
Unzip the configuration environment variables, manually add the environment variable named ROCKETMQ_HOME, and index to the RocketMQ decompression directory

3.JDK11, you need to modify some configurations to start RocketMQ, modify %ROCKETMQ_HOME%/bin/runserver.cmd

@echo off
rem Licensed to the Apache Software Foundation (ASF) under one or more
rem contributor license agreements. See the NOTICE file distributed with
rem this work for additional information regarding copyright ownership.
rem The ASF licenses this file to You under the Apache License, Version 2.0
rem (the "License"); you may not use this file except in compliance with
rem the License. You may obtain a copy of the License at
rem
rem http://www.apache.org/licenses/LICENSE-2.0
rem
rem Unless required by applicable law or agreed to in writing, software
rem distributed under the License is distributed on an "AS IS" BASIS,
rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rem See the License for the specific language governing permissions and
rem limitations under the License.


if not exist "%JAVA_HOME%\bin\java.exe" echo Please set the JAVA_HOME variable in your environment, We need java(x64)! & amp; EXIT /B 1
set "JAVA=%JAVA_HOME%\bin\java.exe"

setlocal

set BASE_DIR=%~dp0
set BASE_DIR=?SE_DIR:~0,-1%
for %%d in (?SE_DIR%) do set BASE_DIR=%%~dpd

set CLASSPATH=.;?SE_DIR%conf;?SE_DIR%lib\*;%CLASSPATH%

set "JAVA_OPT=%JAVA_OPT% -server -Xms256m -Xmx512 -Xmn1g -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m"
set "JAVA_OPT=%JAVA_OPT% -XX: + UseConcMarkSweepGC -XX: + UseCMSCompactAtFullCollection -XX:CMSInitiatingOccupancyFraction=70 -XX: + CMSParallelRemarkEnabled -XX:SoftRefLRUPolicyMSPerMB=0 -XX: + CMSClassUnloadingEnabled -XX:SurvivorRatio=8 -XX:- UseParNewGC"
set "JAVA_OPT=%JAVA_OPT% -verbose:gc -Xloggc:"%USERPROFILE%\rmq_srv_gc.log" -XX: + PrintGCDetails -XX: + PrintGCDateStamps"
set "JAVA_OPT=%JAVA_OPT% -XX:-OmitStackTraceInFastThrow"
set "JAVA_OPT=%JAVA_OPT% -XX:-UseLargePages"
set "JAVA_OPT=%JAVA_OPT% %JAVA_OPT_EXT% -cp "%CLASSPATH%""

"%JAVA%" %JAVA_OPT% %*

Modify %ROCKETMQ_HOME%/bin/runbroker.cmd

@echo off
rem Licensed to the Apache Software Foundation (ASF) under one or more
rem contributor license agreements. See the NOTICE file distributed with
rem this work for additional information regarding copyright ownership.
rem The ASF licenses this file to You under the Apache License, Version 2.0
rem (the "License"); you may not use this file except in compliance with
rem the License. You may obtain a copy of the License at
rem
rem http://www.apache.org/licenses/LICENSE-2.0
rem
rem Unless required by applicable law or agreed to in writing, software
rem distributed under the License is distributed on an "AS IS" BASIS,
rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rem See the License for the specific language governing permissions and
rem limitations under the License.

if not exist "%JAVA_HOME%\bin\java.exe" echo Please set the JAVA_HOME variable in your environment, We need java(x64)! & amp; EXIT /B 1
set "JAVA=%JAVA_HOME%\bin\java.exe"

setlocal

set BASE_DIR=%~dp0
set BASE_DIR=?SE_DIR:~0,-1%
for %%d in (?SE_DIR%) do set BASE_DIR=%%~dpd

set CLASSPATH=.;?SE_DIR%conf;?SE_DIR%lib\*;%CLASSPATH%

rem ================================================= ==========================================
rem JVM Configuration
rem ================================================= ==========================================
set "JAVA_OPT=%JAVA_OPT% -server -Xms2g -Xmx2g"
set "JAVA_OPT=%JAVA_OPT% -XX: + UseG1GC -XX:G1HeapRegionSize=16m -XX:G1ReservePercent=25 -XX:InitiatingHeapOccupancyPercent=30 -XX:SoftRefLRUPolicyMSPerMB=0 -XX:SurvivorRatio=8"
set "JAVA_OPT=%JAVA_OPT% -verbose:gc -Xlog:gc*:file=%USERPROFILE%/mq_gc.log:time,tags:filecount=5,filesize=30M"
set "JAVA_OPT=%JAVA_OPT% -XX:-OmitStackTraceInFastThrow"
set "JAVA_OPT=%JAVA_OPT% -XX: + AlwaysPreTouch"
set "JAVA_OPT=%JAVA_OPT% -XX:MaxDirectMemorySize=15g"
set "JAVA_OPT=%JAVA_OPT% -XX:-UseLargePages -XX:-UseBiasedLocking"
set "JAVA_OPT=%JAVA_OPT% -Drocketmq.client.logUseSlf4j=true"
set "JAVA_OPT=%JAVA_OPT% %JAVA_OPT_EXT% -cp "%CLASSPATH%""

"%JAVA%" %JAVA_OPT% %*

Start RocketMq

start mqnamesrv.cmd

start mqbroker.cmd

Code application

springboot integrates RocketMq dependencies

 <dependency>
            <groupId>org.apache.rocketmq</groupId>
            <artifactId>rocketmq-spring-boot-starter</artifactId>
            <version>2.2.3</version>
        </dependency>

yml file configuration

rocketmq:
  name-server: 127.0.0.1:9876
  # producer
  producer:
    group: MyProducerGroup
    #Message sending timeout
    send-message-timeout: 3000
    #Maximum message length 4M
    max-message-size: 4096
    #Number of retries for failed message sending
    retry-times-when-send-failed: 3
    #Number of retries for failed asynchronous message sending
    retry-times-when-send-async-failed: 2
  #consumer
  consumer:
    group: MyConsumerGroup
    #Maximum number of messages fetched each time
    pull-batch-size: 5

Code implementation
3.1 Producer sends customized messages
3.1.1 Rewrite defaultMqProducer

3.1.2 Delay in sending messages can be set by message.setDelayTimeSec(timeValue); timeValue delays sending time in seconds type Long
3.1.3 Scheduled delivery, current time + milliseconds
message.setDeliverTimeMs(System.currentTimeMillis() + timeValue); timeValue delays sending time in milliseconds type Long

3.2 Consumers monitor messages

Extension-RocketMq Console

Download address: https://rocketmq.apache.org/download
Install the RocketMQ console to view and analyze message traces