Spring Boot is a microframework for building microservices that focuses on getting started quickly with Spring. It exposes useful features by default and gets out of the way if defaults need to change. Spring Boot helps build microservices by automating configuration of dependencies, logging, properties, security, databases, and more. It includes modules for the main library, autoconfiguration, starters, command line interface, production-ready features, and tools.
Spring Boot Hello World
Spring Boot Management (Actuator)
Spring Boot Starter Web (jar vs war)
Auto-Configuration Mechanism
Customizing Rules
Order of Loading Spring Beans
When do I use @Order?
Conclusion
Welcome to presentation on Spring boot which is really great and relatively a new project from Spring.io. Its aim is to simplify creating new spring framework based projects and unify their configurations by applying some conventions. This convention over configuration is already successfully applied in so called modern web based frameworks like Grails, Django, Play framework, Rails etc.
Spring Boot Hello World
Spring Boot Management (Actuator)
Spring Boot Starter Web (jar vs war)
Auto-Configuration Mechanism
Customizing Rules
Order of Loading Spring Beans
When do I use @Order?
Conclusion
Welcome to presentation on Spring boot which is really great and relatively a new project from Spring.io. Its aim is to simplify creating new spring framework based projects and unify their configurations by applying some conventions. This convention over configuration is already successfully applied in so called modern web based frameworks like Grails, Django, Play framework, Rails etc.
This talk introduces Spring's REST stack - Spring MVC, Spring HATEOAS, Spring Data REST, Spring Security OAuth and Spring Social - while refining an API to move higher up the Richardson maturity model
A general- ‐purpose build automation tool. It can automate building, testing, deployment, publishing, generate documentation etc.
Designed to take advantage of convention over configuration.
Combines the power and flexibility of Ant with the dependency management and
conventions of Maven into a more effective way to build.
Today's applications don't live in a vacuum - you need to take the applications to where your users are. Let Spring's REST support along with its powerful client-side technology support, help you get there faster.
From the AJUG meeting: http://www.meetup.com/atlantajug/events/222312943/
Oc 20, 2015
In this fully-loaded session we will give you an update on all things Spring. We will talk about the latest features in Spring Framework 4.2 which was released this summer, and also provide an outlook to what is coming with Spring 5 in 2016.
Next, Spring Boot 1.3 is on the horizon and adds many new features. We will go over those and explain how Spring Boot helps you build production-ready Spring applications.
And then we add Spring Cloud to the mix and explain the various modules
Creating Modular Test-Driven SPAs with Spring and AngularJSGunnar Hillert
Single-page Applications (SPA) are all the rage these days and with them there is an avalanche of new tools, libraries and frameworks we need to know. But what does this mean for us as Spring developers? In this session we will give you an overview of the current landscape and illustrate the choices the Spring XD team has made for its user interface. What do I use to write SPA applications? How do I integrate them into existing Spring-based backends? How do I build them? Can I integrate them into my existing Gradle or Maven build processes in order to achieve complete build automation? How do I integrate realtime messaging using Spring's SockJS/WebSocket support? In this talk we will answer these and many more questions. We will cover frameworks such as AngularJS, Bootstrap, RequireJS; tools like Bower, Grunt, Gulp; and also talk about testing using Karma and Protractor.
This talk introduces Spring's REST stack - Spring MVC, Spring HATEOAS, Spring Data REST, Spring Security OAuth and Spring Social - while refining an API to move higher up the Richardson maturity model
A general- ‐purpose build automation tool. It can automate building, testing, deployment, publishing, generate documentation etc.
Designed to take advantage of convention over configuration.
Combines the power and flexibility of Ant with the dependency management and
conventions of Maven into a more effective way to build.
Today's applications don't live in a vacuum - you need to take the applications to where your users are. Let Spring's REST support along with its powerful client-side technology support, help you get there faster.
From the AJUG meeting: http://www.meetup.com/atlantajug/events/222312943/
Oc 20, 2015
In this fully-loaded session we will give you an update on all things Spring. We will talk about the latest features in Spring Framework 4.2 which was released this summer, and also provide an outlook to what is coming with Spring 5 in 2016.
Next, Spring Boot 1.3 is on the horizon and adds many new features. We will go over those and explain how Spring Boot helps you build production-ready Spring applications.
And then we add Spring Cloud to the mix and explain the various modules
Creating Modular Test-Driven SPAs with Spring and AngularJSGunnar Hillert
Single-page Applications (SPA) are all the rage these days and with them there is an avalanche of new tools, libraries and frameworks we need to know. But what does this mean for us as Spring developers? In this session we will give you an overview of the current landscape and illustrate the choices the Spring XD team has made for its user interface. What do I use to write SPA applications? How do I integrate them into existing Spring-based backends? How do I build them? Can I integrate them into my existing Gradle or Maven build processes in order to achieve complete build automation? How do I integrate realtime messaging using Spring's SockJS/WebSocket support? In this talk we will answer these and many more questions. We will cover frameworks such as AngularJS, Bootstrap, RequireJS; tools like Bower, Grunt, Gulp; and also talk about testing using Karma and Protractor.
Microservices are an essential enabler of agility but developing and deploying them is a challenge. In order for microservices to be loosely coupled,each service must have its own datastore. This makes it difficult to maintain data consistency across services.
Deploying microservices is also a complex problem since an application typically consists of 10s or 100s of services, written in a variety of languages and frameworks. In this presentation, you will learn how to solve these problems by using an event-driven architecture to maintain data consistency and by using Docker to simplify deployment.
Developing microservices with aggregates (SpringOne platform, #s1p)Chris Richardson
The Domain Model pattern is a great way to develop complex business logic. Unfortunately, a typical domain model is a tangled, birds nest of classes. It can’t be decomposed into microservices. Moreover, business logic often relies on ACID transactions to maintain consistency.
Fortunately, there is a solution to this problem: aggregates. An aggregate is an often overlooked modeling concept from the must read book Domain Driven Design. In this talk you will learn how aggregates enable you to develop business logic for the modern world of microservices and NoSQL. We will describe how to use aggregates to design modular business logic that can be partitioned into microservices. You will learn how aggregates enable you to use eventual consistency instead of ACID. We will describe the design of a microservice that is built using aggregates, and Spring Cloud.
Handling Eventual Consistency in JVM Microservices with Event Sourcing (javao...Chris Richardson
This is the talk that the Kenny Bastani and I gave at JavaOne 2016.
When you’re building JVM applications in a microservice architecture, managing state becomes a distributed systems problem. Instead of being able to manage state as transactions inside the boundaries of a single monolithic application, a microservice must be able to manage consistency by using transactions that are distributed across a network of many different applications and databases. This session explores the problems of data consistency and high availability in JVM-based microservices and how to use event sourcing to solve these problems.
Introduction to the Spring Framework:
Generar description
IoC container
Dependency Injection
Beans scope and lifecycle
Autowiring
XML and annotation based configuration
Additional features
Externalized Distributed Configuration Management with Spring Cloud Config-Se...Nikhil Hiremath
A brief 30 minute tutorial on Spring Cloud Config Server - Centralized, distributed configuration management. Helps you quickly get started with Config-Server, config-server registration and discovery, externalizing configuration into secure remote configuration repository. In this guide you'll see all of this made possible with the help of Spring Boot, Spring Cloud Netflix, Spring cloud Eureka and Spring Cloud Config server framework.
JOHN HUMPHREYS VP OF ENGINEERING INFRASTRUCTURE SYSTEMS, NOMURA
Spring Boot is a modern and extensible development framework that aims (and succeeds!) to take as much pain as possible out of developing with Java. With just a few Maven dependencies, new or existing programs become runnable, init.d-compliant uber-JARs or uber-WARs with embedded web-servers and virtually zero-configuration, code or otherwise. As an added freebie, Spring Boot Actuator will provide your programs with amazing configuration-free production monitoring facilities that let you have RESTFUL endpoints serving live stack-traces, heap and GC statistics, database statuses, spring-bean definitions, and password-masked configuration file audits.
This ppt provide basic understanding regarding Spring Boot. And how to configure Spring Boot application with Hibernate and mysql by using eclipse IDE. Also provides understanding about how to configure Spring Tool Suit (STS) in Eclipse.
"Spring Boot. Boot up your development" Сергей МоренецFwdays
своем докладе я подробно расскажу о Spring Boot - библиотеке, которая значительно упрощает работу разработчика и уменьшает количество написанного кода.
Spring Boot позволяет быстрее и проще сконфигурировать сторонние библиотеки и фреймворки, а также предоставляет удобные сервисы для получения метрик работы приложения.
Я поделюсь своим опытом работы, интеграции с Maven/Gradle, покажу практические примеры использования этой технологии.
После этого доклада вы можете самостоятельно использовать Spring Boot в своих приложениях.
Springboot - A milestone framework in Java DevelopmentExpeed Software
Springboot, a milestone framework in Java development, took no time to become the developer's favorite because of its seamless feature-sets and efficiency. All it takes is a jiffy to build scalable, resilient and customer-friendly applications using Springboot's ability to integrate with the Spring ecosystem. Dive into this presentation to learn more about the features offered by Springboot and how it acts as a perk when it comes to web app development! Enter Expeed Software, a leading web development company, to avail of the best and most quality services related to the latest trends in web technology!
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
Elevating Tactical DDD Patterns Through Object CalisthenicsDorra BARTAGUIZ
After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more ‘mechanical’ approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024
Spring boot for buidling microservices
1. Spring Boot -
A Microframework for
Microservices
Nilanjan Roy
2. What is Spring Boot ?
• Focuses attention at a single point (as opposed to large
collection of spring-* projects)
• A tool for getting started very quickly with Spring
• Common non-functional requirements for a "real" application
• Exposes a lot of useful features by default
• Gets out of the way quickly if you want to change defaults
4. How Does it help microservices ?
• You are going to write more than one microservice
• That means you are going to do this a lot….
– Declare dependencies
– Configure Spring
– Configure logging
– Load properties file
– Setup monitoring
– Add Security
– Talk to a database
– Add metrics
6. Spring Boot Modules
• Spring Boot - main library supporting the other parts of Spring Boot
• Spring Boot Autoconfigure -
single @EnableAutoConfiguration annotation creates a whole Spring
context
• Spring Boot Starters - a set of convenient dependency descriptors that
you can include in your application.
• Spring Boot CLI - compiles and runs Groovy source as a Spring
application
• Spring Boot Actuator - common non-functional features that make an
app instantly deployable and supportable in production
• Spring Boot Tools - for building and executing self-contained JAR and
WAR archives
• Spring Boot Samples - a wide range of sample apps
9. Gaining application insight with
Actuator
• Spring Boot Actuator adds several helpful management endpoints
to a Spring Boot-based application. These endpoints include
• GET /autoconfig —Explains the decisions made by Spring Boot when
applying autoconfiguration
• GET /beans —Catalogs the beans that are configured for the running
application
• GET /configprops —Lists all properties available for configuring the
properties of beans in the application with their current values
• GET /dump —Lists application threads, including a stack trace for
each thread
10. Gaining application insight with
the Actuator
• GET /env —Lists all environment and system property variables available to
the application context
• GET /env/{name} —Displays the value for a specific environment or
property variable
• GET /health —Displays the current application health
• GET /info —Displays application-specific information
• GET /metrics —Lists metrics concerning the application, including running
counts of requests against certain endpoints
• GET /metrics/{name} —Displays metrics for a specific application metric
key
• POST /shutdown —Forcibly shuts down the application
• GET /trace —Lists metadata concerning recent requests served through the
application, including request and response headers
15. Customizing Monitoring Endpoints
• We can change how those endpoints are exposed
using application.properties
– management.port=8081 - you can expose those endpoints on port
other than the one application is using .
– management.address=127.0.0.1 - you can only allow to access by IP
address (localhost here).
– management.context-path=/actuator - allows you to have those
endpoints grouped under specified context path rather than root,
i.e. /actuator/health.
– endpoints.health.enabled=false - allows to enable/disable specified
endpoint by name, here /health is disabled.
16. Customizing Monitoring Endpoints
• We can change if an endpoint is enabled, if it is considered sensitive and even
its id.
• Following entry in the application.properties that changes the sensitivity and id
of the beans endpoint and also enables shutdown.
endpoints.beans.id=springbeans
endpoints.beans.sensitive=false
endpoints.shutdown.enabled=true
• By default, all endpoints except for shutdown are enabled. If you prefer to
specifically “opt-in” endpoint enablement you can use
the endpoints.enabled property. For example, the following will
disable all endpoints except for info:
endpoints.enabled=false
endpoints.info.enabled=true
17. Securing Monitoring Endpoints
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
• Disable basic security in application.properties, so that it leaves only the
sensitive Actuator endpoints secured and leaves the rest open for access:
– security.basic.enabled=false
• Set up a new username, or a password if you don't want it to be different on
each start:
– security.user.name=admin
– security.user.password=new_password
• In case you're using the security features across the application and decided to
secure those endpoints yourself, you can disable default security for Actuator:
– management.security.enabled=false
18. Custom Healthchecks
• Besides checking if the application is UP or DOWN, which is done by
default, you can add checks for things like database connectivity or MQ
status etc.
@Component
public class MyHealth implements HealthIndicator {
@Override
public Health health() {
int errorCode = check(); // perform some specific health check
if (errorCode != 0)
{
return Health.down().withDetail("Error Code",
errorCode).build();
}
return Health.up().build();
}
}
20. Emitting your own Metrics
• GaugeService :
– A service that can be used to submit a named double value for storage
and analysis.
– For instance, the value submitted here could be a method execution
timing result, and it would go to a backend that keeps a histogram of
recent values for comparison purposes.
• CounterService :
– Increment , decrement or reset an integer value (e.g. number of times
an error was thrown)
23. Logging with Spring Boot
• Spring Boot uses Commons Logging for all internal logging, but
leaves the underlying log implementation open. Default
configurations are provided for Java Util Logging,Log4J and Logback.
In each case there is console output and file output (rotating, 10
Mb file size).
• By default, If we use the ‘Starter POMs’, Logback will be used for
logging. Appropriate Logback routing is also included to ensure that
dependent libraries that use Java Util Logging, Commons Logging,
Log4J or SLF4J will all work correctly.
24. Spring Boot AutoConfiguration
• Spring Boot auto-configuration attempts to automatically configure your
Spring application based on the jar dependencies that you have added.
For example, If HSQLDB is on your classpath, and you have not manually
configured any database connection beans, then it will auto-configure an
in-memory database.
• You need to opt-in to auto-configuration by adding
the @EnableAutoConfiguration or @SpringBootApplication annotations to
one of your @Configurationclasses.
• Disabling AutoConfiguration
@Configuration
@EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class})
public class MyConfiguration { }
26. Behind the Scene
• There are two parts to it :
1) List of files which has to be considered as
configuration classes
2) When these should be applied
27. Behind the Scene
• @EnableAutoConfiguration" is a spring-boot(autoconfigure) annotation
which is handled by
org.springframework.boot.autoconfigure.EnableAutoConfigurationImport
Selector.
• In "EnableAutoConfigurationImportSelector", it uses
"org.springframework.core.io.support.SpringFactoriesLoader#loadFactory
Names" from spring-core to load configurations whose key is
"org.springframework.boot.autoconfigure.EnableAutoConfiguration".
• This method reads "META-INF/spring.factories" from jar files.(multiple jar
files can have "spring.factories" and when they have same key, comma
delimited values will be merged.)
30. Understand “Twelve-Factor App”
style configuration
• Spring Boot builds upon propertySource
• It allows you to externalize your configuration so you can work with the
same application code in different environments. You can use properties
files, YAML files, environment variables and command-line arguments to
externalize configuration.
• Spring Boot uses a very particular PropertySource order that is designed
to allow sensible overriding of values, properties are considered in the
following order:
32. Understand “Twelve-Factor App”
style configuration
Set the active Spring profiles :
• Profile-specific application properties outside of your packaged jar
(application-{profile}.properties and YAML variants)
• Profile-specific application properties packaged inside your jar
(application-{profile}.properties and YAML variants)
– Usually set through system profile (spring.profiles.active) or an OS environment variable
(SPRING_PROFILES_ACTIVE).
e.g. $ java -jar -Dspring.profiles.active=production demo-0.0.1-SNAPSHOT.jar
or it can be set in application.properties :
spring.profiles.active=production
35. Common application properties
• http://docs.spring.io/spring-
boot/docs/current/reference/html/common-
application-properties.html
36. Understand “Twelve-Factor App”
style configuration
• @ConfigurationProperties
– A way to map properties to POJO
– Type Safe
– IDE Support
– Can be validated with @Valid