Spring Boot Job scheduler

This video Explain you how to scheduled a job using spring boot with Real-world example
GitHub:
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Blog:
javagyanmantra.wixsite.com/we...
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[@chanpreetsinghsaluja8358]

I used a scheduler some days back with a very long approach, your way is really awesome, thank you for the sharing your knowledge :)

[@JavaHubGlobal]

Thank you 😊 basant Sir, today my scheduling related problem solved, thanks alot sir, 10000 likes to you,

[@taufiquealam4125]

Good explanation.....At least we could start if we get real time requirement in project and obviously the implementation will vary. Keep it up boss.

[@evtubera]

You are a life saver!! Thank you! :D

[@samabehera9231]

Nice video explanation

[@pallavidhamne8812]

Thanks for this video. Really in very simple steps you have explained!

[@muzaffarumar]

Cool. Keep going

[@allantenorio9191]

top... congratulations! Fantastic!

[@phanimc11211]

Good explanation

[@akbalkhan5171]

Hi
Do we have other way of initialization techniq if we use double braces of map collection inside a enum constant.

[@PP-hn9vq]

thank you so much! good job.

[@iamShubhamMote]

nicely explained

[@fishionboy9911]

Thanks a lot!

[@kishortiruke2695]

@java Techie spring scheduler can used for function on perticular time at once

[@rupalilokhande2656]

Best!

[@surendram3612]

How can we run both methods parallel by using scheduler

[@sasmitapanigrahi8437]

thank you

[@sriaya1743]

Hi basant, nice video. Is there any way to show all the scheduled jobs in UI and also to execute the scheduled jobs for a definite period of time or at any point can we cancel the jobs?

[@Javatechie]

Am not sure but there is something like spring batch admin and spring data flow

[@chandanjena5214]

Hi, without configuring H2 DB how it is working?

[@testwuserw9837]

I want to integrate springboot war and run scheduler on tomcat any example can u share

[@josuesandovals.9387]

I have a big question in the minute 4:34 when you create the interface I think instead of put for the type of the id integer it must be String because in MODEL you defined the id as String rigth or do i'm wrong?

[@HemantKumar_rocks]

later he changed the model to integer in the video as jpa repostory expects primary key type as integer

[@birendrabangari2747]

Thanks

[@sravanreddymatta5381]

Hi thanks alot for the session. I am trying to use the same concept where I need to sync up pg db with sql db. Whenever a add or update operation happens in sql the same recors I should fetch and update in pg db as well. Could you pls suggest me a better ways to do this. Can I use same JPA and Entity concept or any other better ways to do this.

[@Javatechie]

Looks interesting usecase I will check and update

[@sravanreddymatta5381]

@@Javatechie thanks. Pls help me fast. Wanna take whole controll from java API itself. Can't we create jpa and entities for both db's and copy data from one db entity to another db entity on a schedular basis.

[@Javatechie]

Yes we can do that using spring batch

[@yeshwanthalla8125]

Why @secured and @scheduled on same rest controller is giving authentication error? While hitting the API from post man.

[@Javatechie]

You can't secured a schedule a job . It should be automated

[@Don009Ms]

Hello Basant, how it will work in Clustered Environment where we want to avoid data duplicity? If 2 pods will have same code then program will execute at both and may create issues.

[@Javatechie]

Yes i had same issue but we configured for one region and avoid configuration for another region

[@TechZoneOfficialCH]

We should use Schedlock concept here

[@Javatechie]

Yes you are correct, latter i found this shedlock concept

[@RaviKumar-cq6lq]

HI Sir,One question, can pass crone value from database which will read in runtime.

[@Javatechie]

Yes we can pass 😊

[@chanpreetsinghsaluja3539]

@@Javatechie Hi Sir, @Schedule expects a constant value for cron expression, I am getting trouble getting the repository value to constant, any suggestions?

[@mayurganatra112]

if a method has a return type other than void, then scheduler will work or not ?

[@Javatechie]

Yes it will work but what you will do with return type

[@akashkharade2259]

In Prod we have a scheduler running at 11.00 pm every day, in prod we have two instances of application. So scheduler runs on both instances. How can we avoid this?

[@Javatechie]

Where did you configure your cron expression value?

[@akashkharade2259]

@@Javatechie in Java file only, @Scheduled (* * 10 * * *) like this. This is not the correct cron expression. I just gave for example.

[@Javatechie]

No you need to configure an instance not in the code ? Where do you deploy your code

[@paulsofts7468]

If we deploy our application over a distributed environment on 3 different servers. This will create duplicates records there I believe. How can we make sure duplicacy will not happen because of scheduler?

[@Javatechie]

You are absolutely right, for that we need to implement shed locking mechanism

[@narasimha3990]

Hi Sir whenever am using the spring boot 2 above version it can be work in hikari Database directly but am using MySQL database but not be work Sir am getting the Error is : Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException:
how to solve the this problem Please Help Sir

[@Javatechie]

Hiraki is datasource name so we can use it with spring boot and MySQL

[@dipakdesai1920]

hello , i saw that there is no any connection present to connect with DB like DB name etc so how its working? i did't understood, can u please explain?

[@Javatechie]

Hi am using h2 in memory DB , so db name not required to configure by default it will use testdb

[@dipakdesai1920]

@@Javatechie ok , thanks.

[@tw5529]

Awesome video. I have a small doubt
Plz clarify.
Running multiple instances in single Cluster runs Scheduler tasks multiple times in Java.
Production environment cluster is having 3 nodes. Springboot application (Scheduler is implemented to trigger a method for sending email) .Since application is deployed in 3 nodes of a single Cluster, So, at the same time 3 times the method is getting invoked.The method should be invoked 1 time only.
please suggest me how to resolve this issue?

[@Javatechie]

I believe we can achieve this using spring profile concept

[@mencred4334]

I believe what youre asking can be achieved with quartz scheduler

[@harshadaraut4096]

I want to run call my method from controller daily on 3 pm for 1 hour what should be my cron value

[@Javatechie]

Please check in crontab.com
It should something like below
Second minutes hours day week month
0 0 3 * * *

[@harshadaraut4096]

@@Javatechie Thanks

[@nandinimanikyam6907]

Is it possible to call api from controller on every 15 days once.?

[@Javatechie]

Yes we can just set cron expression

[@nandinimanikyam6907]

@@Javatechie can you give me any sample example to refer?

[@arshas6088]

Hi .have a doubt is quartz the best scheduler to use..
I want to implement two scheduler in my application.FIRST SCHEDULER will pick up file from a folder every day at 9am.How can I make the scheduler to run in next 1hour if the folder is empty..how can I implement that

[@sarulatha7374]

How to schedule this as per our request using controller instead of fixes rate or fixed delay....Could you please reveal a video for that....

[@Javatechie]

No you can't scheduler will run based on cron not in any event

[@sarulatha7374]

@@Javatechie Thanks for the reply....But how to trigger a some event based on end user request which the user selected a start date in springboot.....Could you pls clarify me

[@CSE-AshikAhamedP]

Great sir ,how do load mysql databases for scheduling that database.kindly,your suggestion

[@Javatechie]

Not getting your requirement

[@CSE-AshikAhamedP]

​@@Javatechie how to connect with server( in that database ) to spring boot then I want to schedule

[@CSE-AshikAhamedP]

want to connect with server data

[@CSE-AshikAhamedP]

@@Javatechie Is possible to connect spring boot with mysql databses?

[@Javatechie]

Yes this is simple please checkout my spring boot crud example

[@harshverm776]

Thanks !!!
volume is too low.

[@MindfullEating]

bro hindi mein bhi video banao

[@phanikumarvidiyala3427]

I want source code good explanation

[@Javatechie]

GitHub link mentioned in video description

[@narisnmc]

user.setName(); Can not find it

[@Javatechie]

If you used lombok then please configure it with your Development IDE

[@husniddinprogrammer3523]

It's working

[@vinigt]

thank you