java-container | Demo project for Java Applications | Continuous Deployment library
kandi X-RAY | java-container Summary
kandi X-RAY | java-container Summary
Demo project for Java Applications running inside containers - Using Spring Boot. This application was used for the following blog post:
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- Start the JVM
- Convert bytes to a human - readable string
- Gets the current CPU
- Gets a welcome message
- Entry point for the application
java-container Key Features
java-container Examples and Code Snippets
Community Discussions
Trending Discussions on java-container
QUESTION
I have created a spring boot application with spring data JPA that should connect with a RDS instance,i have api's exposed which will deo CRUD basically I have provided the DB connection details as below in application.yml file,
...ANSWER
Answered 2021-Feb-18 at 12:23Increasing Lambda timeout fixed this issue. Added the below lines too,
LambdaContainerHandler.getContainerConfig().setInitializationTimeout(60_000); handler = SpringBootLambdaContainerHandler.getAwsProxyHandler(Application.class);
QUESTION
I have a spring boot app that I am trying to boot as a Lambda with the aws-serverless-java-container-spring library, and upon startup I get the error:
...ANSWER
Answered 2020-Dec-08 at 23:28The common answer to this question is that you have mixed up some libraries, although I could never find good instructions on how to resolve the issue.
The key thing to understand here is that the org.springframework.cloud.bootstrap.BootstrapApplicationListener class comes from the spring-cloud-context library, while org.springframework.boot.builder.SpringApplicationBuilder comes from the spring-boot library.
Using mvn dependency:tree I could see the following output:
QUESTION
I have a Dockerfile that starts a java process with this command CMD java -jar application.jar serve /path-to-file/setting.yaml
Now, I want to make the settings.yaml to be configMap, so, I can manage it in kubernetes instead of building a new docker image every time I have updated a setting.
My question is: is possible to achieve this now that I won't be passing setting.yaml in the Dockerfile but a kubernetes yaml as a confiMap?
...ANSWER
Answered 2020-Aug-16 at 01:00First, you would create a ConfigMap:
QUESTION
I'm building a Spring Boot project making use of S/4HANA custom OData Service and Java VDM. I have been following various tutorials on SAP Blog, developer.sap.com or S4H13 course - the approach is pretty much the same. I managed to successfully generate VDM for my Custom OData Service based on the edmx file, created all necessary commands, methods in the controller and so on.
Unfortunately, I'm encountering an issue when launching the project locally.
I use the following command first: mvn clean package and later, when I'm in the application directory want to run the project: mvn spring-boot:run.
The project build fails with the following errors and exceptions:
2020-07-31 12:45:20.941 ERROR 70176 --- [main] o.a.c.c.C.[Tomcat].[localhost].[/] : Exception sending context initialized event to listener instance of class [com.sap.cloud.sdk.s4hana.connectivity.ErpDestination]
ANSWER
Answered 2020-Jul-31 at 13:16Please find the outdated dependency in your dependency tree:
QUESTION
I am new to aws lambda and I am moving my spring boot 2.x based project to lambda.But I am struggling with lambda cold-start and warm-up. I tried a few things mentioned in this link:https://github.com/awslabs/aws-serverless-java-container/wiki/Quick-start---Spring-Boot, but still the application takes around 45 secs to start.
Things I tried:
Async initialization from the above link. It did help a bit but not enough.
Skip the Init phase of the lambda. It helped reduce almost 8 secs.
Provisioned concurrency but as far as I could see, it is not helping either. When I saw the logs, the spring context is getting initialized every time, if any request comes after an interval of 15-20 mins.
The response time of my lambda in different scenarios is:
...ANSWER
Answered 2020-Mar-21 at 19:21A 5 minute Cloudwatch Event would come out to arount 8600 calls / month. If you ran even 100000 calls it's still free according to the calculator on https://aws.amazon.com/lambda/pricing/ with 3GB of memory.
To configure Cloudwatch to ping your Lambda, start by creating rule (Cloudwatch -> Rules) and have it run every 5 minutes:
Then, have it run your Lambda:
My Lambda in this example is named SnapshotHandler and it takes a small JSON object. Note that this calls the Lambda directly, not through an API gateway. That may or may not be what your Lambda code is expecting so you may need to update.
If you want to call this Lambda via a HTTP/S API, you'll need to setup an SNS topic to publish the Cloudwatch event to and have the SNS topic call your API via HTTP. This is a bit more complicated but not terrible.
All in all, you can do this but the cost is dependent on how many "normal" calls your API gets. At 1000000 calls per month a 3GB / 800ms Lambda is at about USD $33. At 10000000 it's nearly USD $400. But if you're getting that many calls (an average of about 230/second) it seems unlikely you need a heartbeat too.
QUESTION
I have a simple REST application developed using SpringBoot and this application jar has been deployed in a docker container. The end goal is to test the latency of this application under different JVM flag value combinations. I need to know how I can specify a long list of JVM flag values that can be repeatedly changed?
I know that you can specify one or two flags like this:
Dockerfile
ANSWER
Answered 2020-Feb-03 at 09:36While passing values using .sh is valid, you have so many params so I think that the clearer way is using docker-compose.
Just install it from here then you can specify in your docker-compose.yml something like this:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install java-container
Open a command prompt and navigate to the root directory of this application.
Type this command to build and execute the application: mvn clean compile spring-boot:run
The application will be running at the following URL: http://localhost:8080/api/hello
You can trigger the allocation of 80% of JVM memory accessing http://localhost:8080/api/memory
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page
