This set of steps for performance testing using JMeter includes two salary increases and one promotion

Project background
Our platform is a national industry monitoring platform , after 3 Wheel function test 、 After interface test ,98% The problem has been closed , It is decided to conduct performance test on the interface for uploading data from provincial platform to national platform .
01
testing procedure
1、 Write a performance test plan
Because I just entered this project team soon , Only participated in it 3 Functional test of modules , One interface regression test , So when writing a performance test plan , First, the business process 、 The business functions have been sorted out , Focus on the documentation of the interface to be tested again , Under the guidance of the tutor , Have a better understanding of the functions of each interface response , The biggest gain is , The performance test should correspond to the actual function of each interface , Design appropriate use cases , Such as ： For an object , There are two kinds of data upload , One is real-time data , One is historical data .

here , The stability of continuous upload should be considered more for real-time data , Historical data should be more concerned about the accumulation of data , Upload more than one at a time (1000 strip ) Data , We should pay more attention to the data after uploading correctness , integrity .

After sorting out the functions of each interface and the logic of data upload , Each one Interface performance test Methods 、 Test items 、 The required data are well designed , After finishing, it is our test plan . Here are some screenshots ,
The test plan is written when the actual operation attempt is feasible , Areas that need to be adjusted found in the follow-up implementation process , Adjusted according to the actual demand . At the end of the document, I will attach the problems and solutions in this performance test , I hope it will be helpful to the new performance test friends ~

2、 Discussion of test scheme
Submit the test plan to the supervisor for review , The plan was discussed in a group meeting , The team leader puts forward improvement suggestions for inappropriate places , Colleagues put forward their own ideas , There are still unclear areas that have become clearer in our discussions . After discussion , The test plan becomes more suitable for the needs of the project 、 More feasible . Some screenshots that need to be modified this time are as follows ：
3、 Performance test execution
We use Jmeter Tools to test . The interface information is as follows ：
Test script usage Java To write , The data is packaged as json Format .
4、 Output test report
5、 Analyze the data
6、 Troubleshoot problems
7、 Performance improvements

02
Case sharing
An interface case is analyzed in detail below – Historical data upload .

1、 Create a thread group ： open Jmeter.bat, The graphical interface appears , Click successively as shown in the figure below ：
2、 add to HTTP Default request ： This accessory is added to control the access address and port of this thread group , Click here in turn ：
To configure HTTP Default request parameters , According to the... To be tested IP And port , As shown below ：
3、 Database connection configuration ： Because we need to get enterprise information from the database , So configure the database connection （ Use configuration components -JDBC Connection configuration ）, If you log in with the a fixed user name and password , This step can be omitted .
JDBC Connection configuration ：

4、 Add controller only once ： It belongs to logic controller , It is used to control the execution sequence of the sampler . Because users here only need to log in once , So use the controller only once , That means that the content under this controller will only cycle once in the operation of the whole thread group .
5、 add to HTTP request ： To add under the once only controller , To be controlled by it .HTTP Request belongs to Sampler（ Sampler ）, Then fill in... According to the relevant contents of the interface document http Request content .

6、 Add regular expression extractor ： Need to be in http Request to add... Below , Because from http In the response result of the request, we use regular expressions to extract what we need key.

Regular expressions ：
　　　　()： The enclosed part is to be extracted .
　　　　.： Match any string .
　　　　+： Once or more .
　　　　?： Don't be greedy , Stop after first match found .

（3） Templates ： use

To quote , If there are multiple regular expressions in a regular expression , It can be $23$ wait , Represents the amount of the resolved value to the reference name （ Such as ：key）. Such as ：$1$ Represents resolved to 1 It's worth .

（4） Match the Numbers ：0 Represents a random value ,1 Represents all values , Generally, filling 0.

（5） The default value ： If the parameter does not get a value , It defaults to a value .
7、 Add get current time ： Use the... In the sampler BeanShell Sampler. For convenience in Redis When you check the data in, you know when it was uploaded . The number of times to extract the current time needs to be written in the sampler java Script .

8、 Use java Write a script to set up upload data , Also used here Bean Shell Sampler Sampler . Data needs to be json Format . here , The sampler will be added under the thread group , Because the data may have to be uploaded repeatedly , If only part of the screenshot is as follows ：
9、 add to http request , Upload the data just set that meets the interface requirements .
10、 Add listener
Set the location where the running log is saved in the listener .

11、 View the results after running .

The house needs to be built layer by layer , Knowledge needs to be learned at one point one . We should lay a good foundation in the process of learning , More hands-on practice , Don't talk much , The last dry goods here ！ I stayed up late to sort out the stages ( function 、 Interface 、 automation 、 performance 、 Test open ) Skills learning materials + Practical explanation , Very suitable for studying in private , It's much more efficient than self-study , Share with you .

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