10 minutes to understand how JMeter plays with redis database

Jmeter As a very popular tool for interface testing and performance testing , It is widely used in enterprises , and redis As a cache database , It is also widely used in enterprises , How to use jmeter To test redis Database ？ Today we will talk about how to use jmeter To call redis.

jmeter Get ready

because jmeter It doesn't carry redis Test entry for , We need to install redis plug-in unit .

First , We download jmeter-plugins-manager-1.6.jar file , Put it in jmeter Of lib Of ext In the folder , And then restart jmeter.

then , stay ‘ Options ’ Under menu , Click on ‘plugin manager’, Open the plug-in management pop-up window , choice ‘Available Plugins’, In the search box , Input redis

 

then , Choose ‘Redis Data Set’, Click on ‘Apply Changes and Restart JMeter’

Restart after automatic download jmeter.

then , stay jmeter Right click on the thread group of , add to > The configuration element > [email protected] - Redis Data Set

 

here , You can pass jmeter configure connections redis Database . If you already have redis database , Then you can directly configure it in the current interface , If you haven't redis database , You need to install redis database .

install redis database

install redis There are many ways to build a database , That use docker How to install , It's probably the simplest , I'll use docker To install redis database .

docker run -itd --name jmeter-redis \
-p 6779:6379  \ 
daocloud.io/library/redis:3.2.8-alpine redis-server --appendonly yes

Okay , There is now a redis database , It's time to insert some data into the database .

#  Into the container 
docker exec -it jmeter-redis /bin/sh

#  Command mode , Connect redis
redis-cli

#  Insert list data 
lpush course jmeter,loadruner
lpush course wrk,ab
lpush course locust,ngrinder

 

Now? ,redis In the database , There is already a list course, We can do it in jmeter in , Get its data .

jmeter Use redis data

stay RedisDataSet Configuration information in

 

• Data Configuration Redis key：Redis Medium key,Redis List in database （ Ordered data ） Or set （ Out of order data ） The name of Variable Names： The name of the variable exported from the dataset to the test element （ Set the extracted value In which variable ） Delimiter： Stored in Redis The separator used in a row in a list or collection （ Take out value When there are multiple values , Separator between variable names ） Date Sources Type： Data source type , Yes List、Set Two options Recycle data on Flase： Whether the data is reused
• Connection Configuration Redis server host：Redis The server IP Address Redis server port：Redis Service port Timeout for connect in ms： Connection timeout , Default 2000 ms Password for connection： Connect Redis Password Database： Database name , Connect Redis The first database , The default is 0
• Redis Pool Configuration

Field	usage	The default value is
minIdle	At least how many are idle redis example	0
maxIdle	How many are idle in a thread pool at most redis example	10
maxActive	Control one pool How many can be allocated redis example , adopt pool.getResource() To get ; If the assignment is -1, It means no limit ; If pool Has been allocated maxActive individual jedis example , Now pool The state of is exhausted	20
maxWait	Said when borrow One redis When an instance , Maximum waiting time , If the wait time is exceeded , And just throw it out JedisConnectionException	30000
whenExhaustedAction	Said when pool Medium redis All examples are allocated At the end ,pool What to do ; There are three kinds of defaults WHEN_EXHAUSTED_FAIL（ It means nothing redis When an instance , Direct selling NoSuchElementException）、WHEN_EXHAUSTED_BLOCK（ It means blocked , Or achieve maxWait Throw when JedisConnectionException）、WHEN_EXHAUSTED_GROW（ It means to create a new jedis example , That is to say, the setting maxActive It's useless ）	GROW
testOnBorrow	stay borrow One redis When an instance , In advance or not alidate operation ; If true, Obtained redis Instances are available	False
testOnReturn	stay return to pool when , In advance or not validate operation	False
testWhileIdle	If true, That means there is a idle object evitor The thread of idle object scan , If validate Failure , this object Will be from pool in drop fall ; This term is only in timeBetweenEvictionRunsMillis Greater than 0 Only when makes sense	False
timeBetweenEvictionRunsMillis	Express idle object evitor Between scans sleep Millisecond count	30000
numTestsPerEvictionRun	Express idle object evitor Maximum number of objects per scan	0
minEvictableIdleTimeMillis	Means that an object at least stays in idle The minimum time of a state , And then to be idle object evitor Scan and expel ; This term is only in timeBetweenEvictionRunsMillis Greater than 0 Only when makes sense	60000
softMinEvictableIdleTimeMillis	stay minEvictableIdleTimeMillis On the basis of , Joined at least minIdle The object is already in pool Inside the . If -1,evicted Will not be based on idle time Expel any object . If minEvictableIdleTimeMillis>0, Then this setting has no meaning , And only in timeBetweenEvictionRunsMillis Greater than 0 Only when makes sense	60000

Next, we add a debug sampler , Reference... In name redis Variable name . then , The number of thread group cycles is set more than once .

 

function

 

We see , To obtain the redis The data of .

jmeter towards redis Write data in

The above? , We have already talked about , How to get redis Data in the database ？ What about next , Let's talk about how to redis Write data in the database .

First , We download jedis Of jar package , Put the downloaded package , Put in jmeter Of lib Under the folder , restart jmeter

then , stay jmeter in , Add a thread group , add to ‘jsr223 sampler’

import redis.clients.jedis.Jedis;

Jedis jedis = new Jedis("81.69.228.171", 6679);
jedis.set("foo","bar");
String value = jedis.get("foo");

 

Run script

 

from redis Confirm in the database , The data has been warehoused

 

Okay , adopt jmeter The methods of writing data and obtaining data are discussed , Have you learned ？