This document provides a tutorial on using ZooKeeper to implement basic distributed synchronization primitives like barriers and producer-consumer queues. It includes code examples for Barrier and Queue classes that extend a base SyncPrimitive class. The Barrier class allows processes to synchronize barrier entry and exit. The Queue class implements a distributed queue where producers can add elements and consumers can remove the oldest elements added.
This document provides an introduction to Akka.NET Streams and Reactive Streams. It discusses key concepts like observables, async enumerables, and reactive streams. It also demonstrates how to build workflows with Akka.NET streams, including examples of building a TCP server. The document introduces core Akka.NET streams concepts like sources, flows, and sinks, and how they compose together in a runnable graph. It also covers testing streams with probes and materialization.
The document discusses modern concurrency primitives like threads, thread pools, coroutines, and schedulers. It covers why asynchronous programming with async/await is preferred over traditional threading. It also discusses challenges like sharing data across threads and blocking on I/O calls. Some solutions covered include using thread pools with dedicated I/O threads, work stealing, and introducing interruption points in long-running tasks.
Tech Talks_25.04.15_Session 3_Tibor Sulyan_Distributed coordination with zook...EPAM_Systems_Bulgaria
This document provides an overview of distributed coordination using ZooKeeper and Curator. It discusses ZooKeeper features like its data model, API, guarantees such as consistency and availability. Common recipes for coordination like shared data, service discovery, locking, and leader election are presented. The document also covers performance considerations and advanced ZooKeeper topics like using observers and hierarchical quorums. Finally, Curator is introduced as a higher-level client API for ZooKeeper that implements many recipes and handles complexity.
The document discusses issues with testing business logic in Orleans grains that access grain state. Specifically, the business logic code is duplicated across grain methods and calling the logic directly in tests fails because the grain state is null. The solution is to use Orleans' declarative persistence by defining a grain state interface and inheriting from Grain, which allows the state to be initialized for tests.
Learning Rx does not have to be boring like working your way through theoretical sermons about esoteric concepts like category theory and duality. Life is too short for that kind of abstract nonsense.
So what is a better way to spend a hot summer day with an ice-cold drink, or a cold winter night with a piping hot drink, than to learn Rx by writing an awesome platform game? In this talk, Erik will walk you through many of the features of Rx through programming a friendly bug to run across a lushy grassy meadow and jump for the stars.
Taking advantage of the Amazon Web Services (AWS) FamilyBen Hall
The document provides an overview of using Amazon Web Services (AWS) for hosting applications and storing files. It summarizes key AWS services including Amazon S3 for object storage, Amazon EC2 for virtual servers, and Amazon CloudFront for content delivery. It also provides code examples for accessing S3 and EC2 using APIs and SDKs.
The Ring programming language version 1.9 book - Part 11 of 210Mahmoud Samir Fayed
The document outlines the new features in Ring 1.9, including a new Load Package command to load libraries in new scopes, improved ringvm_see() and ringvm_give() functions, better trace library and debugging support, updated RingQt classes, and a new RingLibuv extension for multi-platform asynchronous I/O.
This document provides an introduction to Akka.NET Streams and Reactive Streams. It discusses key concepts like observables, async enumerables, and reactive streams. It also demonstrates how to build workflows with Akka.NET streams, including examples of building a TCP server. The document introduces core Akka.NET streams concepts like sources, flows, and sinks, and how they compose together in a runnable graph. It also covers testing streams with probes and materialization.
The document discusses modern concurrency primitives like threads, thread pools, coroutines, and schedulers. It covers why asynchronous programming with async/await is preferred over traditional threading. It also discusses challenges like sharing data across threads and blocking on I/O calls. Some solutions covered include using thread pools with dedicated I/O threads, work stealing, and introducing interruption points in long-running tasks.
Tech Talks_25.04.15_Session 3_Tibor Sulyan_Distributed coordination with zook...EPAM_Systems_Bulgaria
This document provides an overview of distributed coordination using ZooKeeper and Curator. It discusses ZooKeeper features like its data model, API, guarantees such as consistency and availability. Common recipes for coordination like shared data, service discovery, locking, and leader election are presented. The document also covers performance considerations and advanced ZooKeeper topics like using observers and hierarchical quorums. Finally, Curator is introduced as a higher-level client API for ZooKeeper that implements many recipes and handles complexity.
The document discusses issues with testing business logic in Orleans grains that access grain state. Specifically, the business logic code is duplicated across grain methods and calling the logic directly in tests fails because the grain state is null. The solution is to use Orleans' declarative persistence by defining a grain state interface and inheriting from Grain, which allows the state to be initialized for tests.
Learning Rx does not have to be boring like working your way through theoretical sermons about esoteric concepts like category theory and duality. Life is too short for that kind of abstract nonsense.
So what is a better way to spend a hot summer day with an ice-cold drink, or a cold winter night with a piping hot drink, than to learn Rx by writing an awesome platform game? In this talk, Erik will walk you through many of the features of Rx through programming a friendly bug to run across a lushy grassy meadow and jump for the stars.
Taking advantage of the Amazon Web Services (AWS) FamilyBen Hall
The document provides an overview of using Amazon Web Services (AWS) for hosting applications and storing files. It summarizes key AWS services including Amazon S3 for object storage, Amazon EC2 for virtual servers, and Amazon CloudFront for content delivery. It also provides code examples for accessing S3 and EC2 using APIs and SDKs.
The Ring programming language version 1.9 book - Part 11 of 210Mahmoud Samir Fayed
The document outlines the new features in Ring 1.9, including a new Load Package command to load libraries in new scopes, improved ringvm_see() and ringvm_give() functions, better trace library and debugging support, updated RingQt classes, and a new RingLibuv extension for multi-platform asynchronous I/O.
Reactive programming is a modern and trending technology which allows development of background task easy and managable. This presentation will specically explain use of Rx plug-in in android and ios applications
RxJava & RxSwift
http://reactivex.io/
The document provides an overview of Groovy and Java code examples for performing common tasks like printing "Hello World", reading files, making web requests, using strings, importing packages, and using Swing/SwingBuilder for GUIs. It also shows examples of using Groovy with Java libraries for Excel files, Ant, and JSON. Additional sections cover parallel processing with GPars, contract programming with GContracts, method chaining, Grails basics, and Gaelyk controllers and views.
This document contains code for a server-client program that allows communication between a server and multiple clients.
The ServerProgram class handles listening for new client connections on the server socket. When a client connects, it sends a greeting message and begins receiving data from the client. Received data is passed to a delegate to update UI controls.
The ClientProgram class manages connecting to the server, receiving data which is passed to a delegate, and sending data to the server.
The serverForm and clientForm classes create instances of the server and client programs, and contain UI elements and button click handlers to control connection, disconnection, and sending/receiving data.
The Ring programming language version 1.5.2 book - Part 13 of 181Mahmoud Samir Fayed
Ring 1.5.2 introduces new features for using operators like '<' and ':' as the 'from' keyword in class definitions. It also provides functions for embedding Ring code in Ring programs without sharing state between instances, allowing Ring code to be executed safely and with isolated environments. The documentation also describes the RingZip library for working with zip files, and the Form Designer tool for building GUI applications visually.
Understanding Source Code Differences by Separating Refactoring EffectsShinpei Hayashi
The document discusses separating refactoring effects from source code differences by describing refactoring changes that were made between versions of code. It provides an example of refactoring changes made between two versions of code, including renaming a class and parameters, deleting a for-loop, commenting out code, and renaming a method. The example highlights how refactoring can introduce differences that are not actual behavior changes.
Ingesting streaming data for analysis in apache ignite (stream sets theme)Tom Diederich
Apache Ignite provides a distributed platform for a wide variety of workloads, but often the issue is simply in getting data into the database in the first place. The wide variety of data sources and formats presents a challenge to any data engineer; in addition, 'data drift', the constant and inevitable mutation of the incoming data's structure and semantics, can break even the most well-engineered integration.
This session, aimed at data architects, data engineers and developers, will explore how we can use the open source StreamSets Data Collector to build robust data pipelines. Attendees will learn how to collect data from cloud platforms such as Amazon and Salesforce, devices, relational databases and other sources, continuously stream it to Ignite, and then use features such as Ignite's continuous queries to perform streaming analysis.
We'll start by covering the basics of reading files from disk, move on to relational databases, then look at more challenging sources such as APIs and message queues. You will learn how to:
* Build data pipelines to ingest a wide variety of data into Apache Ignite
* Anticipate and manage data drift to ensure that data keeps flowing
* Perform simple and complex ad-hoc queries in Ignite via SQL
* Write applications using Ignite to run continuous queries, combining data from multiple sources
Dagger is a dependency injection framework that allows injecting collaborators into objects without requiring manual passing of dependencies. RxJava implements reactive programming, allowing observable streams to be manipulated through operators like map and filter. Retrofit makes REST API calls simply by defining an interface and allows results to be easily converted to Java objects. Together these libraries help create testable Android applications by decoupling classes and managing dependencies and asynchronous processes in a declarative way.
Java 7 Launch Event at LyonJUG, Lyon France. Fork / Join framework and Projec...julien.ponge
The document discusses new features in Java SE 7 including the Fork/Join framework for parallel programming, language evolutions through Project Coin such as try-with-resources statements, and diamond syntax for generic types which simplifies generic class instance creation. It also covers varargs syntax simplification and restrictions on using diamond syntax with anonymous inner classes.
This document summarizes new features and enhancements in Java 7 including Project Coin, NIO.2, invokedynamic, Fork/Join framework, and concurrency utilities. It discusses how these features make threads, parallelism, and concurrency easier to work with in Java. Code examples are provided to illustrate the use of ForkJoinPool, Callable, and try-with-resources statements.
Industrial Strength Groovy - Tools for the Professional Groovy Developer: Pau...Paul King
This document provides an overview of tools for testing, mocking, dependency injection, code quality, and duplication detection for Groovy developers. It discusses popular testing frameworks like JUnit, TestNG, Spock and EasyB and mocking libraries like MockFor, GMock and EasyMock. It also covers dependency injection with Spring and Guice, code coverage with Cobertura, code style checking with CodeNarc, and duplication detection with Simian.
Testing multi outputformat based mapreduceAshok Agarwal
The document describes using a MultiOutputFormat in MapReduce to generate separate output files for each stock price based on input that contains stock price data. It includes code for a mapper that extracts the stock name and price from each input record and a reducer that writes these values to individual files for each stock name. Unit tests are also described to test the reducer by mocking the MultipleOutputs class and validating that the output files contain the expected stock price values.
Exploring OpenFaaS autoscalability on Kubernetes with the Chaos ToolkitSylvain Hellegouarch
A report generated by the Chaos Toolkit after a Chaos Engineering experiment against OpenFaaS on Kubernetes.
View the run of the experiment at https://asciinema.org/a/dv4cNOMC5k1oWDhWDe97d5eij
This document contains code for a file sharing application that allows users to upload files to Amazon S3 storage and send download links to recipients via email. It includes code for connecting to MongoDB and S3 databases, handling file uploads with Multer, generating signed URLs with AWS, sending emails with Nodemailer, and building APIs with Express. The React code handles form inputs, file previews, and confirming upload status.
Dpilot is a cloud based file transfer application that allows its user to upload data on cloud server and the receiver on the other hand can downlaod the data from the server. The Downlaod information is send to the receiver via mail service.
Other Features include:-
Secure Login system
Easy data Access
Lightening Fast Uploads and Downloads
Connect with your Facebook Or Gmail Account for easy access
В данной лекции рассмотрена минимальная реализация акторной модели, включающая
- отправку сообщений,
- создание новых акторов и смену поведения для приема следующего сообщения.
Исходный код реализации выложен на https://github.com/hwdtech/HWdTech.DS. Код на C#.
При разработке использовались библиотеки: Autofac, NuUnit, Moq
This document discusses several popular Java libraries including:
- Dependency injection frameworks like Guice and Spring
- Logging with SLF4J
- Collections and utilities with Guava
- HTTP clients like OkHttp
- Reactive programming with RxJava
- REST with Retrofit
- Asynchronous programming with JDeferred
- Event handling with MBassador
- Code generation with Lombok and ByteBuddy
- Testing utilities like JUnitParams, Mockito, Jukito, and Spock
- Waiting assertions with Awaitility and REST testing with Rest-assured.
This document discusses various techniques for working with multimedia in Android applications, including detecting device capabilities, loading images from local storage and remote URLs, playing audio files from assets and raw resources, and improving performance through caching and asynchronous loading. It provides code examples for checking if a device has a front-facing camera, loading images while avoiding out of memory errors, playing audio files from assets, and using an AsyncTask to load images asynchronously to avoid blocking the UI. It also discusses potential memory leak issues and strategies for building an image cache.
This document discusses using Inter-Process Communication (IPC) mechanisms like Intent, Messenger, and Android Interface Definition Language (AIDL) to allow processes to communicate with each other in an Android app. It provides code examples of implementing IPC using each mechanism to allow a Service running in a separate process to communicate tasks and results back to an Activity. AIDL is presented as the most robust solution, allowing synchronous and asynchronous remote calls between processes through generated Java interface stubs.
This document provides recipes and solutions for implementing common distributed computing constructs like barriers, queues, locks, and leader election using Apache ZooKeeper. It describes how to build higher-level functions out of ZooKeeper's basic primitives by establishing conventions at the client level. The recipes avoid polling and expose ZooKeeper's ordering guarantees to enable synchronous behavior.
This document provides recipes and solutions for implementing common distributed computing constructs like barriers, queues, locks, and leader election using Apache ZooKeeper. It describes how to build higher-level functions out of ZooKeeper's basic primitives by establishing conventions at the client level. The recipes avoid polling and expose ZooKeeper's ordering guarantees to enable synchronous behavior.
This document provides recipes and solutions for implementing common distributed computing constructs using ZooKeeper. It describes how to implement barriers, queues, locks, two-phased commit, and leader election using the primitives available in ZooKeeper. The recipes avoid polling and expose ordering through ZooKeeper's mechanisms to allow building synchronous constructs from asynchronous notifications.
The document provides an introduction to JUnit testing in Java. It discusses how to set up a JUnit test with the AEM testing framework using the AemContextExtension. Key aspects covered include adding Sling models to the test context, loading mock JSON resources, and adapting requests to test Sling models. The anatomy of a JUnit test is explained with examples of setting up mocks, verifying expectations, and asserting results. Mocking and the Mockito framework are also introduced for simulating dependencies in tests.
Reactive programming is a modern and trending technology which allows development of background task easy and managable. This presentation will specically explain use of Rx plug-in in android and ios applications
RxJava & RxSwift
http://reactivex.io/
The document provides an overview of Groovy and Java code examples for performing common tasks like printing "Hello World", reading files, making web requests, using strings, importing packages, and using Swing/SwingBuilder for GUIs. It also shows examples of using Groovy with Java libraries for Excel files, Ant, and JSON. Additional sections cover parallel processing with GPars, contract programming with GContracts, method chaining, Grails basics, and Gaelyk controllers and views.
This document contains code for a server-client program that allows communication between a server and multiple clients.
The ServerProgram class handles listening for new client connections on the server socket. When a client connects, it sends a greeting message and begins receiving data from the client. Received data is passed to a delegate to update UI controls.
The ClientProgram class manages connecting to the server, receiving data which is passed to a delegate, and sending data to the server.
The serverForm and clientForm classes create instances of the server and client programs, and contain UI elements and button click handlers to control connection, disconnection, and sending/receiving data.
The Ring programming language version 1.5.2 book - Part 13 of 181Mahmoud Samir Fayed
Ring 1.5.2 introduces new features for using operators like '<' and ':' as the 'from' keyword in class definitions. It also provides functions for embedding Ring code in Ring programs without sharing state between instances, allowing Ring code to be executed safely and with isolated environments. The documentation also describes the RingZip library for working with zip files, and the Form Designer tool for building GUI applications visually.
Understanding Source Code Differences by Separating Refactoring EffectsShinpei Hayashi
The document discusses separating refactoring effects from source code differences by describing refactoring changes that were made between versions of code. It provides an example of refactoring changes made between two versions of code, including renaming a class and parameters, deleting a for-loop, commenting out code, and renaming a method. The example highlights how refactoring can introduce differences that are not actual behavior changes.
Ingesting streaming data for analysis in apache ignite (stream sets theme)Tom Diederich
Apache Ignite provides a distributed platform for a wide variety of workloads, but often the issue is simply in getting data into the database in the first place. The wide variety of data sources and formats presents a challenge to any data engineer; in addition, 'data drift', the constant and inevitable mutation of the incoming data's structure and semantics, can break even the most well-engineered integration.
This session, aimed at data architects, data engineers and developers, will explore how we can use the open source StreamSets Data Collector to build robust data pipelines. Attendees will learn how to collect data from cloud platforms such as Amazon and Salesforce, devices, relational databases and other sources, continuously stream it to Ignite, and then use features such as Ignite's continuous queries to perform streaming analysis.
We'll start by covering the basics of reading files from disk, move on to relational databases, then look at more challenging sources such as APIs and message queues. You will learn how to:
* Build data pipelines to ingest a wide variety of data into Apache Ignite
* Anticipate and manage data drift to ensure that data keeps flowing
* Perform simple and complex ad-hoc queries in Ignite via SQL
* Write applications using Ignite to run continuous queries, combining data from multiple sources
Dagger is a dependency injection framework that allows injecting collaborators into objects without requiring manual passing of dependencies. RxJava implements reactive programming, allowing observable streams to be manipulated through operators like map and filter. Retrofit makes REST API calls simply by defining an interface and allows results to be easily converted to Java objects. Together these libraries help create testable Android applications by decoupling classes and managing dependencies and asynchronous processes in a declarative way.
Java 7 Launch Event at LyonJUG, Lyon France. Fork / Join framework and Projec...julien.ponge
The document discusses new features in Java SE 7 including the Fork/Join framework for parallel programming, language evolutions through Project Coin such as try-with-resources statements, and diamond syntax for generic types which simplifies generic class instance creation. It also covers varargs syntax simplification and restrictions on using diamond syntax with anonymous inner classes.
This document summarizes new features and enhancements in Java 7 including Project Coin, NIO.2, invokedynamic, Fork/Join framework, and concurrency utilities. It discusses how these features make threads, parallelism, and concurrency easier to work with in Java. Code examples are provided to illustrate the use of ForkJoinPool, Callable, and try-with-resources statements.
Industrial Strength Groovy - Tools for the Professional Groovy Developer: Pau...Paul King
This document provides an overview of tools for testing, mocking, dependency injection, code quality, and duplication detection for Groovy developers. It discusses popular testing frameworks like JUnit, TestNG, Spock and EasyB and mocking libraries like MockFor, GMock and EasyMock. It also covers dependency injection with Spring and Guice, code coverage with Cobertura, code style checking with CodeNarc, and duplication detection with Simian.
Testing multi outputformat based mapreduceAshok Agarwal
The document describes using a MultiOutputFormat in MapReduce to generate separate output files for each stock price based on input that contains stock price data. It includes code for a mapper that extracts the stock name and price from each input record and a reducer that writes these values to individual files for each stock name. Unit tests are also described to test the reducer by mocking the MultipleOutputs class and validating that the output files contain the expected stock price values.
Exploring OpenFaaS autoscalability on Kubernetes with the Chaos ToolkitSylvain Hellegouarch
A report generated by the Chaos Toolkit after a Chaos Engineering experiment against OpenFaaS on Kubernetes.
View the run of the experiment at https://asciinema.org/a/dv4cNOMC5k1oWDhWDe97d5eij
This document contains code for a file sharing application that allows users to upload files to Amazon S3 storage and send download links to recipients via email. It includes code for connecting to MongoDB and S3 databases, handling file uploads with Multer, generating signed URLs with AWS, sending emails with Nodemailer, and building APIs with Express. The React code handles form inputs, file previews, and confirming upload status.
Dpilot is a cloud based file transfer application that allows its user to upload data on cloud server and the receiver on the other hand can downlaod the data from the server. The Downlaod information is send to the receiver via mail service.
Other Features include:-
Secure Login system
Easy data Access
Lightening Fast Uploads and Downloads
Connect with your Facebook Or Gmail Account for easy access
В данной лекции рассмотрена минимальная реализация акторной модели, включающая
- отправку сообщений,
- создание новых акторов и смену поведения для приема следующего сообщения.
Исходный код реализации выложен на https://github.com/hwdtech/HWdTech.DS. Код на C#.
При разработке использовались библиотеки: Autofac, NuUnit, Moq
This document discusses several popular Java libraries including:
- Dependency injection frameworks like Guice and Spring
- Logging with SLF4J
- Collections and utilities with Guava
- HTTP clients like OkHttp
- Reactive programming with RxJava
- REST with Retrofit
- Asynchronous programming with JDeferred
- Event handling with MBassador
- Code generation with Lombok and ByteBuddy
- Testing utilities like JUnitParams, Mockito, Jukito, and Spock
- Waiting assertions with Awaitility and REST testing with Rest-assured.
This document discusses various techniques for working with multimedia in Android applications, including detecting device capabilities, loading images from local storage and remote URLs, playing audio files from assets and raw resources, and improving performance through caching and asynchronous loading. It provides code examples for checking if a device has a front-facing camera, loading images while avoiding out of memory errors, playing audio files from assets, and using an AsyncTask to load images asynchronously to avoid blocking the UI. It also discusses potential memory leak issues and strategies for building an image cache.
This document discusses using Inter-Process Communication (IPC) mechanisms like Intent, Messenger, and Android Interface Definition Language (AIDL) to allow processes to communicate with each other in an Android app. It provides code examples of implementing IPC using each mechanism to allow a Service running in a separate process to communicate tasks and results back to an Activity. AIDL is presented as the most robust solution, allowing synchronous and asynchronous remote calls between processes through generated Java interface stubs.
This document provides recipes and solutions for implementing common distributed computing constructs like barriers, queues, locks, and leader election using Apache ZooKeeper. It describes how to build higher-level functions out of ZooKeeper's basic primitives by establishing conventions at the client level. The recipes avoid polling and expose ZooKeeper's ordering guarantees to enable synchronous behavior.
This document provides recipes and solutions for implementing common distributed computing constructs like barriers, queues, locks, and leader election using Apache ZooKeeper. It describes how to build higher-level functions out of ZooKeeper's basic primitives by establishing conventions at the client level. The recipes avoid polling and expose ZooKeeper's ordering guarantees to enable synchronous behavior.
This document provides recipes and solutions for implementing common distributed computing constructs using ZooKeeper. It describes how to implement barriers, queues, locks, two-phased commit, and leader election using the primitives available in ZooKeeper. The recipes avoid polling and expose ordering through ZooKeeper's mechanisms to allow building synchronous constructs from asynchronous notifications.
The document provides an introduction to JUnit testing in Java. It discusses how to set up a JUnit test with the AEM testing framework using the AemContextExtension. Key aspects covered include adding Sling models to the test context, loading mock JSON resources, and adapting requests to test Sling models. The anatomy of a JUnit test is explained with examples of setting up mocks, verifying expectations, and asserting results. Mocking and the Mockito framework are also introduced for simulating dependencies in tests.
1. The document discusses good and bad practices for writing unit tests. It emphasizes that tests should verify the expected behavior, fail clearly when something goes wrong, and use mocks and isolation to focus on the code being tested.
2. Some examples of bad tests shown include tests that don't make assertions or assertions that don't provide useful information on failure. Real objects are also used instead of mocks, obscuring the test.
3. Good practices include using mocks to isolate the code being tested, making sure tests fail clearly when something goes wrong, and focusing tests on expected behavior through clear assertions. Automated testing, fixing broken tests, and mastering testing tools are also emphasized.
Struts 2 is an open source MVC framework based on Java EE standards. It uses a request-response pipeline where interceptors pre-process and post-process requests. The core components are interceptors, actions, and results. Interceptors provide functionality like validation while actions contain application logic and results define the response. Values are stored and accessed from a value stack using OGNL.
JavaFX 8 est disponible depuis mars 2014 et apporte son lot de nouveautés. Gradle est en version 2 depuis juillet 2014. Deux technologies plus que prometteuses: JavaFX donne un coup de jeune au développement d’applications desktop en Java en apportant un navigateur web intégré, le support des WebSockets, de la 3D, et bien d’autres. Gradle est l’outil de d’automatisation de build à la mode, apportant de superbes possibilités par rapport rapport à maven, outil vieillissant, grâce à l’engouement de la communauté vis à vis de cet outil mais aussi par le fait de la technologie utilisée en son sein: groovy. Venez découvrir comment il est possible de réaliser rapidement une application à la mode en JavaFX avec un outil à la mode également. Bref venez à une session trendy.
The document discusses the future of server-side JavaScript. It covers various Node.js frameworks and libraries that support both synchronous and asynchronous programming styles. CommonJS aims to provide interoperability across platforms by implementing synchronous proposals using fibers. Examples demonstrate how CommonJS allows for synchronous-like code while maintaining asynchronous behavior under the hood. Benchmarks show it has comparable performance to Node.js. The author advocates for toolkits over frameworks and continuing development of common standards and packages.
GDG Jakarta Meetup - Streaming Analytics With Apache BeamImre Nagi
Google slide version of this slide can be accessed from: https://docs.google.com/presentation/d/1Ws73JxlVH39HiKiYuF3vW903j8wFzxPQihXz4CQ_HZM/edit?usp=sharing
Slides for a talk at the Seattle Java User Group about building a workflow management application for a biomedical lab on top of the OSGi module system and the Eclipse Rich Client Platform.
This document summarizes key aspects of Java servlets including:
- The servlet lifecycle which includes initialization, service, and destruction phases.
- How servlets handle HTTP requests through methods like doGet() and doPost().
- How servlets can communicate with other components using various protocols beyond just HTTP.
- How servlet contexts allow servlets to share information and resources.
- How servlets can create, read, and modify cookies to maintain state across requests.
The document discusses various techniques for testing large, distributed systems beyond traditional unit testing. It recommends embracing virtualization to simulate production environments and deploying applications and tests across multiple virtual machines. Various tools are presented to help with distributed, automated testing including Cactus for in-container testing, Selenium and jsUnit for browser testing, and SmartFrog as a framework for describing, deploying and managing distributed service components and tests. The document calls for a focus on system-level tests that simulate the full production environment and integrate testing across distributed systems.
The document discusses various techniques for determining where to start testing a legacy application, including:
1) Analyzing code coverage reports to find which parts of the code are most used.
2) Checking version control history to identify files that change frequently.
3) Conducting code reviews to find areas that modify data.
4) Running static code analysis tools to locate sections likely to contain bugs.
The document advocates starting testing with the highest priority areas identified using these techniques, and provides examples of writing initial tests against a sample codebase.
10 Excellent Ways to Secure Spring Boot Applications - Okta Webinar 2020Matt Raible
Spring Boot is an efficient way to build Java applications with the Spring Framework. If you’re developing apps that handle sensitive data, you should make sure they’re secure.
This session will cover HTTPS, dependency checking, CSRF, using a CSP to prevent XSS, OIDC, password hashing, and much more!
You’ll learn how to add these features to a real application, using the Java language you know and love.
* Blog post: https://developer.okta.com/blog/2018/07/30/10-ways-to-secure-spring-boot
* Cheat sheet: https://snyk.io/blog/spring-boot-security-best-practices/
* OIDC demo: http://bit.ly/spring-oidc-demo
This document provides an introduction to JUnit and Mockito for testing Java code. It discusses how to set up JUnit tests with annotations like @Before, @After, and @Test. It also covers using JUnit assertions and test suites. For Mockito, the document discusses how to create and use mock objects to stub behavior and verify interactions. It provides examples of argument matchers and consecutive stubbing in Mockito.
Developing Real-Time Data Pipelines with Apache KafkaJoe Stein
Apache Kafka is a distributed streaming platform that allows for building real-time data pipelines and streaming apps. It provides a publish-subscribe messaging system with persistence that allows for building real-time streaming applications. Producers publish data to topics which are divided into partitions. Consumers subscribe to topics and process the streaming data. The system handles scaling and data distribution to allow for high throughput and fault tolerance.
Building Scalable Stateless Applications with RxJavaRick Warren
RxJava is a lightweight open-source library, originally from Netflix, that makes it easy to compose asynchronous data sources and operations. This presentation is a high-level intro to this library and how it can fit into your application.
Kotlin is a modern programming language that focuses on clarity, code safety and conciseness. Google officially adopted Kotlin by adding support into Android Studio in 2017 and since then has announced it as the preferred language for Android developers. Android app teams have incrementally added Kotlin code to their projects or have elected to start new Android projects in Kotlin moving forward. Having the app code and UI automation code in the same language helps engineering and QA teams level set on the critical user journeys being tested. Here we share the basics of getting started with automating an Appium test in Kotlin.
This document discusses Python assertion and unit testing. It provides an example of using assertions to validate the output of a factorial function. Assertions allow checking conditions and halting the program if a condition is false. The document also covers unit testing frameworks in Python like unittest, and describes common concepts like test fixtures, test cases, test suites, and test runners. It provides an example unittest code to test the factorial function with common assertion methods like assertEqual.
The document provides an overview and summary of Curator, a client library for Apache ZooKeeper. Curator aims to simplify ZooKeeper development by providing a friendlier API, handling retries, and implementing common patterns ("recipes") like leader election and locks. It consists of a client, framework, and recipes components. The framework handles connection management and retries, while recipes implement distributed primitives. Details about common recipes like locks and leader election are provided.
Similar to Programming with ZooKeeper - A basic tutorial (20)
This SQL query selects all properties from the alf_node_properties table where the actual type is 21 and there is no matching content data in the alf_content_data table for the long value property.
In his public lecture, Christian Timmerer provides insights into the fascinating history of video streaming, starting from its humble beginnings before YouTube to the groundbreaking technologies that now dominate platforms like Netflix and ORF ON. Timmerer also presents provocative contributions of his own that have significantly influenced the industry. He concludes by looking at future challenges and invites the audience to join in a discussion.
Best 20 SEO Techniques To Improve Website Visibility In SERPPixlogix Infotech
Boost your website's visibility with proven SEO techniques! Our latest blog dives into essential strategies to enhance your online presence, increase traffic, and rank higher on search engines. From keyword optimization to quality content creation, learn how to make your site stand out in the crowded digital landscape. Discover actionable tips and expert insights to elevate your SEO game.
Removing Uninteresting Bytes in Software FuzzingAftab Hussain
Imagine a world where software fuzzing, the process of mutating bytes in test seeds to uncover hidden and erroneous program behaviors, becomes faster and more effective. A lot depends on the initial seeds, which can significantly dictate the trajectory of a fuzzing campaign, particularly in terms of how long it takes to uncover interesting behaviour in your code. We introduce DIAR, a technique designed to speedup fuzzing campaigns by pinpointing and eliminating those uninteresting bytes in the seeds. Picture this: instead of wasting valuable resources on meaningless mutations in large, bloated seeds, DIAR removes the unnecessary bytes, streamlining the entire process.
In this work, we equipped AFL, a popular fuzzer, with DIAR and examined two critical Linux libraries -- Libxml's xmllint, a tool for parsing xml documents, and Binutil's readelf, an essential debugging and security analysis command-line tool used to display detailed information about ELF (Executable and Linkable Format). Our preliminary results show that AFL+DIAR does not only discover new paths more quickly but also achieves higher coverage overall. This work thus showcases how starting with lean and optimized seeds can lead to faster, more comprehensive fuzzing campaigns -- and DIAR helps you find such seeds.
- These are slides of the talk given at IEEE International Conference on Software Testing Verification and Validation Workshop, ICSTW 2022.
UiPath Test Automation using UiPath Test Suite series, part 6DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 6. In this session, we will cover Test Automation with generative AI and Open AI.
UiPath Test Automation with generative AI and Open AI webinar offers an in-depth exploration of leveraging cutting-edge technologies for test automation within the UiPath platform. Attendees will delve into the integration of generative AI, a test automation solution, with Open AI advanced natural language processing capabilities.
Throughout the session, participants will discover how this synergy empowers testers to automate repetitive tasks, enhance testing accuracy, and expedite the software testing life cycle. Topics covered include the seamless integration process, practical use cases, and the benefits of harnessing AI-driven automation for UiPath testing initiatives. By attending this webinar, testers, and automation professionals can gain valuable insights into harnessing the power of AI to optimize their test automation workflows within the UiPath ecosystem, ultimately driving efficiency and quality in software development processes.
What will you get from this session?
1. Insights into integrating generative AI.
2. Understanding how this integration enhances test automation within the UiPath platform
3. Practical demonstrations
4. Exploration of real-world use cases illustrating the benefits of AI-driven test automation for UiPath
Topics covered:
What is generative AI
Test Automation with generative AI and Open AI.
UiPath integration with generative AI
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Pushing the limits of ePRTC: 100ns holdover for 100 daysAdtran
At WSTS 2024, Alon Stern explored the topic of parametric holdover and explained how recent research findings can be implemented in real-world PNT networks to achieve 100 nanoseconds of accuracy for up to 100 days.
Observability Concepts EVERY Developer Should Know -- DeveloperWeek Europe.pdfPaige Cruz
Monitoring and observability aren’t traditionally found in software curriculums and many of us cobble this knowledge together from whatever vendor or ecosystem we were first introduced to and whatever is a part of your current company’s observability stack.
While the dev and ops silo continues to crumble….many organizations still relegate monitoring & observability as the purview of ops, infra and SRE teams. This is a mistake - achieving a highly observable system requires collaboration up and down the stack.
I, a former op, would like to extend an invitation to all application developers to join the observability party will share these foundational concepts to build on:
Threats to mobile devices are more prevalent and increasing in scope and complexity. Users of mobile devices desire to take full advantage of the features
available on those devices, but many of the features provide convenience and capability but sacrifice security. This best practices guide outlines steps the users can take to better protect personal devices and information.
Sudheer Mechineni, Head of Application Frameworks, Standard Chartered Bank
Discover how Standard Chartered Bank harnessed the power of Neo4j to transform complex data access challenges into a dynamic, scalable graph database solution. This keynote will cover their journey from initial adoption to deploying a fully automated, enterprise-grade causal cluster, highlighting key strategies for modelling organisational changes and ensuring robust disaster recovery. Learn how these innovations have not only enhanced Standard Chartered Bank’s data infrastructure but also positioned them as pioneers in the banking sector’s adoption of graph technology.
Full-RAG: A modern architecture for hyper-personalizationZilliz
Mike Del Balso, CEO & Co-Founder at Tecton, presents "Full RAG," a novel approach to AI recommendation systems, aiming to push beyond the limitations of traditional models through a deep integration of contextual insights and real-time data, leveraging the Retrieval-Augmented Generation architecture. This talk will outline Full RAG's potential to significantly enhance personalization, address engineering challenges such as data management and model training, and introduce data enrichment with reranking as a key solution. Attendees will gain crucial insights into the importance of hyperpersonalization in AI, the capabilities of Full RAG for advanced personalization, and strategies for managing complex data integrations for deploying cutting-edge AI solutions.
Driving Business Innovation: Latest Generative AI Advancements & Success StorySafe Software
Are you ready to revolutionize how you handle data? Join us for a webinar where we’ll bring you up to speed with the latest advancements in Generative AI technology and discover how leveraging FME with tools from giants like Google Gemini, Amazon, and Microsoft OpenAI can supercharge your workflow efficiency.
During the hour, we’ll take you through:
Guest Speaker Segment with Hannah Barrington: Dive into the world of dynamic real estate marketing with Hannah, the Marketing Manager at Workspace Group. Hear firsthand how their team generates engaging descriptions for thousands of office units by integrating diverse data sources—from PDF floorplans to web pages—using FME transformers, like OpenAIVisionConnector and AnthropicVisionConnector. This use case will show you how GenAI can streamline content creation for marketing across the board.
Ollama Use Case: Learn how Scenario Specialist Dmitri Bagh has utilized Ollama within FME to input data, create custom models, and enhance security protocols. This segment will include demos to illustrate the full capabilities of FME in AI-driven processes.
Custom AI Models: Discover how to leverage FME to build personalized AI models using your data. Whether it’s populating a model with local data for added security or integrating public AI tools, find out how FME facilitates a versatile and secure approach to AI.
We’ll wrap up with a live Q&A session where you can engage with our experts on your specific use cases, and learn more about optimizing your data workflows with AI.
This webinar is ideal for professionals seeking to harness the power of AI within their data management systems while ensuring high levels of customization and security. Whether you're a novice or an expert, gain actionable insights and strategies to elevate your data processes. Join us to see how FME and AI can revolutionize how you work with data!
Building Production Ready Search Pipelines with Spark and MilvusZilliz
Spark is the widely used ETL tool for processing, indexing and ingesting data to serving stack for search. Milvus is the production-ready open-source vector database. In this talk we will show how to use Spark to process unstructured data to extract vector representations, and push the vectors to Milvus vector database for search serving.
HCL Notes and Domino License Cost Reduction in the World of DLAUpanagenda
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-and-domino-license-cost-reduction-in-the-world-of-dlau/
The introduction of DLAU and the CCB & CCX licensing model caused quite a stir in the HCL community. As a Notes and Domino customer, you may have faced challenges with unexpected user counts and license costs. You probably have questions on how this new licensing approach works and how to benefit from it. Most importantly, you likely have budget constraints and want to save money where possible. Don’t worry, we can help with all of this!
We’ll show you how to fix common misconfigurations that cause higher-than-expected user counts, and how to identify accounts which you can deactivate to save money. There are also frequent patterns that can cause unnecessary cost, like using a person document instead of a mail-in for shared mailboxes. We’ll provide examples and solutions for those as well. And naturally we’ll explain the new licensing model.
Join HCL Ambassador Marc Thomas in this webinar with a special guest appearance from Franz Walder. It will give you the tools and know-how to stay on top of what is going on with Domino licensing. You will be able lower your cost through an optimized configuration and keep it low going forward.
These topics will be covered
- Reducing license cost by finding and fixing misconfigurations and superfluous accounts
- How do CCB and CCX licenses really work?
- Understanding the DLAU tool and how to best utilize it
- Tips for common problem areas, like team mailboxes, functional/test users, etc
- Practical examples and best practices to implement right away
Unlocking Productivity: Leveraging the Potential of Copilot in Microsoft 365, a presentation by Christoforos Vlachos, Senior Solutions Manager – Modern Workplace, Uni Systems
Cosa hanno in comune un mattoncino Lego e la backdoor XZ?Speck&Tech
ABSTRACT: A prima vista, un mattoncino Lego e la backdoor XZ potrebbero avere in comune il fatto di essere entrambi blocchi di costruzione, o dipendenze di progetti creativi e software. La realtà è che un mattoncino Lego e il caso della backdoor XZ hanno molto di più di tutto ciò in comune.
Partecipate alla presentazione per immergervi in una storia di interoperabilità, standard e formati aperti, per poi discutere del ruolo importante che i contributori hanno in una comunità open source sostenibile.
BIO: Sostenitrice del software libero e dei formati standard e aperti. È stata un membro attivo dei progetti Fedora e openSUSE e ha co-fondato l'Associazione LibreItalia dove è stata coinvolta in diversi eventi, migrazioni e formazione relativi a LibreOffice. In precedenza ha lavorato a migrazioni e corsi di formazione su LibreOffice per diverse amministrazioni pubbliche e privati. Da gennaio 2020 lavora in SUSE come Software Release Engineer per Uyuni e SUSE Manager e quando non segue la sua passione per i computer e per Geeko coltiva la sua curiosità per l'astronomia (da cui deriva il suo nickname deneb_alpha).
Communications Mining Series - Zero to Hero - Session 1DianaGray10
This session provides introduction to UiPath Communication Mining, importance and platform overview. You will acquire a good understand of the phases in Communication Mining as we go over the platform with you. Topics covered:
• Communication Mining Overview
• Why is it important?
• How can it help today’s business and the benefits
• Phases in Communication Mining
• Demo on Platform overview
• Q/A
For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/building-and-scaling-ai-applications-with-the-nx-ai-manager-a-presentation-from-network-optix/
Robin van Emden, Senior Director of Data Science at Network Optix, presents the “Building and Scaling AI Applications with the Nx AI Manager,” tutorial at the May 2024 Embedded Vision Summit.
In this presentation, van Emden covers the basics of scaling edge AI solutions using the Nx tool kit. He emphasizes the process of developing AI models and deploying them globally. He also showcases the conversion of AI models and the creation of effective edge AI pipelines, with a focus on pre-processing, model conversion, selecting the appropriate inference engine for the target hardware and post-processing.
van Emden shows how Nx can simplify the developer’s life and facilitate a rapid transition from concept to production-ready applications.He provides valuable insights into developing scalable and efficient edge AI solutions, with a strong focus on practical implementation.