This slide talks about what is stress test and what tools can help to do stress test so far. After comparison, JMeter will be the easiest one to do stress test on the contemporary IoT protocols, such as MQTT, CoAP.
How to stuff a 900 pound gorilla into a smartphoneJoel Maher
Migrating the 100,000+ unittests for Firefox to run on mobile phones to test the new mobile product from Mozilla.
Presented at OSCON09, July 23, 2:35pm.
At Tuenti, we do two code pushes per week, sometimes modifying thousands of files and running thousands of automated tests and build operations before, to ensure not only that the code works but also that proper localization is applied, bundles are generated and files get deployed to hundreds of servers as fast and reliable as possible.
We use opensource tools like Mercurial, MySQL, Jenkins, Selenium, PHPUnit and Rsync among our own in-house ones, and have different development, testing, staging and production environments.
We had to fight with problems like statics bundling and versioning, syntax errors and of course the fact that we have +100 engineers working on the codebase, sometimes merging and releasing more than a dozen branches the same day. We also switched from Subversion to Mercurial to obtain more flexibility and faster branching operations.
With this talk we will explain the process of how code changes in ourcode repository end up in live code, detailing some practices and tips that we apply.
JS Fest 2019. Александр Хотемский. Способы распараллеливания тестов в JavaScriptJSFestUA
Люди часто думают, что выполнять параллельные тесты в JavaScript сложно, и на самом деле это так. Мы рассмотрим возможные способы одновременного выполнения тестов написанных JavaScript (nodejs). Рассмотрим разные подходы - начиная от базового и общеизвестного разбиения по файлам и заканчивая некоторыми сумасшедшими экспериментальными вещами, такими как worker threads, functions as a service, isolates. Пояснения и метрики производительности включены!
- Конкурентность vs параллельность
- Конкурентная паралелизация
- Паралельность используя NodeJS процессы
- Паралельность используя Worker Threads
- IPC (коммуникация между процессами)
- Functions as a service
- Isolates
Comparative Performance of XSLT Processors in Apache CocoonJack Ivers
(2005) A presentation from the 2005 Apache Cocoon Get Together, held in Amsterdam October 5-7, 2005. Presented by Jack Ivers and others from Agile Partners based on work done at Merck & Co., Inc.
Training Slides: 103 - Basics - Simple Tungsten Clustering InstallationContinuent
This 52min training session summarises what you need to know with regards to Tungsten Clustering architecture and topologies; and then dives into its installation process.
TOPICS COVERED
- Re-cap of the Architecture And Topology
- Plan The Installation
- Documentation
- Software
- Environmental Decisions
- Review Pre-Requisites
- Review Installation Types And Methods
- Walk Through: Simple 3 Node Cluster Installation
This slide talks about what is stress test and what tools can help to do stress test so far. After comparison, JMeter will be the easiest one to do stress test on the contemporary IoT protocols, such as MQTT, CoAP.
How to stuff a 900 pound gorilla into a smartphoneJoel Maher
Migrating the 100,000+ unittests for Firefox to run on mobile phones to test the new mobile product from Mozilla.
Presented at OSCON09, July 23, 2:35pm.
At Tuenti, we do two code pushes per week, sometimes modifying thousands of files and running thousands of automated tests and build operations before, to ensure not only that the code works but also that proper localization is applied, bundles are generated and files get deployed to hundreds of servers as fast and reliable as possible.
We use opensource tools like Mercurial, MySQL, Jenkins, Selenium, PHPUnit and Rsync among our own in-house ones, and have different development, testing, staging and production environments.
We had to fight with problems like statics bundling and versioning, syntax errors and of course the fact that we have +100 engineers working on the codebase, sometimes merging and releasing more than a dozen branches the same day. We also switched from Subversion to Mercurial to obtain more flexibility and faster branching operations.
With this talk we will explain the process of how code changes in ourcode repository end up in live code, detailing some practices and tips that we apply.
JS Fest 2019. Александр Хотемский. Способы распараллеливания тестов в JavaScriptJSFestUA
Люди часто думают, что выполнять параллельные тесты в JavaScript сложно, и на самом деле это так. Мы рассмотрим возможные способы одновременного выполнения тестов написанных JavaScript (nodejs). Рассмотрим разные подходы - начиная от базового и общеизвестного разбиения по файлам и заканчивая некоторыми сумасшедшими экспериментальными вещами, такими как worker threads, functions as a service, isolates. Пояснения и метрики производительности включены!
- Конкурентность vs параллельность
- Конкурентная паралелизация
- Паралельность используя NodeJS процессы
- Паралельность используя Worker Threads
- IPC (коммуникация между процессами)
- Functions as a service
- Isolates
Comparative Performance of XSLT Processors in Apache CocoonJack Ivers
(2005) A presentation from the 2005 Apache Cocoon Get Together, held in Amsterdam October 5-7, 2005. Presented by Jack Ivers and others from Agile Partners based on work done at Merck & Co., Inc.
Training Slides: 103 - Basics - Simple Tungsten Clustering InstallationContinuent
This 52min training session summarises what you need to know with regards to Tungsten Clustering architecture and topologies; and then dives into its installation process.
TOPICS COVERED
- Re-cap of the Architecture And Topology
- Plan The Installation
- Documentation
- Software
- Environmental Decisions
- Review Pre-Requisites
- Review Installation Types And Methods
- Walk Through: Simple 3 Node Cluster Installation
The session is about the significance of Camel and using Camel with Event Driven Architectures. It will give an overview of Apache Camel and showcase different types of EDA patterns that can be implemented with Camel.
1. Introduction
An introduction to Enterprise Application Integration and Apache Camel
Camel as a Chamelion: An introduction to the simplicity of Camel
Some interesting components: twitter, aws-sqs, mongodb, web-sockets, camel-extra
2. Event Driven Architectures with Camel
What and why of EDA
EDA within Camel using SEDA
Deployment architectures: Camel as a participant of EDA
Actor Model using Camel
Rust is a relatively new programming language promising performance, reliability and productivity. In order to learn Rust Gerard converted a micro service he already wrote in Clojure and Kotlin, both JVM languages, to Rust. The microservice processes two kinds of events, and uses PostgreSQL to keep state. As part of the conversion he wrote a library to use the Confluent Schema Registry with Rust.
What can be said about the promises of Rust compared to the JVM? Gerard will tell about his experiences in using Rust with Kafka, and presenting some benchmarks comparing the different languages. The focus of the benchmarks will be the end to end latency and resource usage. He will conclude with some remarks why it may or may not be a good idea to add some Rust to your Kafka.
OSMC 2021 | Monitoring Open Source HardwareNETWAYS
As part of a new initiative to enable open source hardware, multiple manufacturers including IBM, HPE, and others have open source hardware machines with open source hardware, firmware, and software. This provides more opportunities for monitoring and getting agent-less data but also agent-based data. This presentation will show some of the open source hardware and will show how you can enable you to get control and monitor this hardware using Icinga2.
OSMC 2021 | Robotmk: You don’t run IT – you deliver services!NETWAYS
Business applications have to be available, performant and functioning. Full stop. Even with thousands of infrastructure monitoring checks, you won’t be able to even begin to monitor the end-user’s perspective. The fact is: you monitor your IT, but you can only hope that your services will work. Time to change that. Time to use a framework. Time to use Robot Framework. My presentation will show you the demand for End2End-Monitoring and why Robot Framework is an excellent choice for automated application tests. You will also get to know Robotmk, the link between Robot Framework and Checkmk. It dovetails both tools extremely closely and gives your infrastructure monitoring a holistic approach. It is used by companies of diverse branches, as well as by authorities and governments. And once you have discovered the KubernetesLibrary, DataDriver, RequestsLibrary and all the many more libraries, you will not want to put Robot Framework down again. But that’s another story…
JDK 17, the next LTS version of Java, is available and it contains not only new language constructs but also there are many operational improvements like higher performance. We have a look at what a Jakarta EE developer will find interesting, even if you are using Jakarta EE 8.
Learn about these features and improvements including Records, Text blocks, Garbage collection improvements, and monitoring through Flight Recorder in several live demos with Payara Micro. After this session you will be able to use all new shiny features of JDK 17 in your next Java Enterprise application.
jLove 2020 - Micronaut and graalvm: The power of AoTIván López Martín
Micronaut is a reflection-free app-development framework that uses ahead-of-time (AoT) compilation to precompute everything in the application, paving the way for lightning-fast startup times and significantly reduced memory consumption. What if I told you that you can reduce the startup time by orders of magnitude? And what if you could reduce memory consumption even more?
GraalVM is a new universal virtual machine from Oracle that supports a polyglot runtime environment. GraalVM has the ability to compile Java applications down to native machine code, making it an ideal partner for Micronaut.
In this talk you will learn how you can take advantage of GraalVM's powerful capabilities to convert your Micronaut applications to run as binary native images.
Reactive Micro Services with Java seminarGal Marder
Abstract –
Micro services is the current architectural trend. In this seminar, we'll go over the concepts behind a good micro-service implementation and see how to implement it with available Java frameworks.
Target Audience
Java developers, team leaders, project managers.
Prerequisites
Java knowledge
Contents:
Overview of Micro-service architecture principles.
- Technical stacks:
- The Spring Stack (Spring Boot & Cloud)
- Lagom
- Akka and Play
- Vertx
- Complementaries
- Discovery
- Configuration
- Monitoring
The venerable Servlet Container still has some performance tricks up its sleeve - this talk will demonstrate Apache Tomcat's stability under high load, describe some do's (and some don'ts!), explain how to performance test a Servlet-based application, troubleshoot and tune the container and your application and compare the performance characteristics of the different Tomcat connectors. The presenters will share their combined experience supporting real Tomcat applications for over 20 years and show how a few small changes can make a big, big difference.
The session is about the significance of Camel and using Camel with Event Driven Architectures. It will give an overview of Apache Camel and showcase different types of EDA patterns that can be implemented with Camel.
1. Introduction
An introduction to Enterprise Application Integration and Apache Camel
Camel as a Chamelion: An introduction to the simplicity of Camel
Some interesting components: twitter, aws-sqs, mongodb, web-sockets, camel-extra
2. Event Driven Architectures with Camel
What and why of EDA
EDA within Camel using SEDA
Deployment architectures: Camel as a participant of EDA
Actor Model using Camel
Rust is a relatively new programming language promising performance, reliability and productivity. In order to learn Rust Gerard converted a micro service he already wrote in Clojure and Kotlin, both JVM languages, to Rust. The microservice processes two kinds of events, and uses PostgreSQL to keep state. As part of the conversion he wrote a library to use the Confluent Schema Registry with Rust.
What can be said about the promises of Rust compared to the JVM? Gerard will tell about his experiences in using Rust with Kafka, and presenting some benchmarks comparing the different languages. The focus of the benchmarks will be the end to end latency and resource usage. He will conclude with some remarks why it may or may not be a good idea to add some Rust to your Kafka.
OSMC 2021 | Monitoring Open Source HardwareNETWAYS
As part of a new initiative to enable open source hardware, multiple manufacturers including IBM, HPE, and others have open source hardware machines with open source hardware, firmware, and software. This provides more opportunities for monitoring and getting agent-less data but also agent-based data. This presentation will show some of the open source hardware and will show how you can enable you to get control and monitor this hardware using Icinga2.
OSMC 2021 | Robotmk: You don’t run IT – you deliver services!NETWAYS
Business applications have to be available, performant and functioning. Full stop. Even with thousands of infrastructure monitoring checks, you won’t be able to even begin to monitor the end-user’s perspective. The fact is: you monitor your IT, but you can only hope that your services will work. Time to change that. Time to use a framework. Time to use Robot Framework. My presentation will show you the demand for End2End-Monitoring and why Robot Framework is an excellent choice for automated application tests. You will also get to know Robotmk, the link between Robot Framework and Checkmk. It dovetails both tools extremely closely and gives your infrastructure monitoring a holistic approach. It is used by companies of diverse branches, as well as by authorities and governments. And once you have discovered the KubernetesLibrary, DataDriver, RequestsLibrary and all the many more libraries, you will not want to put Robot Framework down again. But that’s another story…
JDK 17, the next LTS version of Java, is available and it contains not only new language constructs but also there are many operational improvements like higher performance. We have a look at what a Jakarta EE developer will find interesting, even if you are using Jakarta EE 8.
Learn about these features and improvements including Records, Text blocks, Garbage collection improvements, and monitoring through Flight Recorder in several live demos with Payara Micro. After this session you will be able to use all new shiny features of JDK 17 in your next Java Enterprise application.
jLove 2020 - Micronaut and graalvm: The power of AoTIván López Martín
Micronaut is a reflection-free app-development framework that uses ahead-of-time (AoT) compilation to precompute everything in the application, paving the way for lightning-fast startup times and significantly reduced memory consumption. What if I told you that you can reduce the startup time by orders of magnitude? And what if you could reduce memory consumption even more?
GraalVM is a new universal virtual machine from Oracle that supports a polyglot runtime environment. GraalVM has the ability to compile Java applications down to native machine code, making it an ideal partner for Micronaut.
In this talk you will learn how you can take advantage of GraalVM's powerful capabilities to convert your Micronaut applications to run as binary native images.
Reactive Micro Services with Java seminarGal Marder
Abstract –
Micro services is the current architectural trend. In this seminar, we'll go over the concepts behind a good micro-service implementation and see how to implement it with available Java frameworks.
Target Audience
Java developers, team leaders, project managers.
Prerequisites
Java knowledge
Contents:
Overview of Micro-service architecture principles.
- Technical stacks:
- The Spring Stack (Spring Boot & Cloud)
- Lagom
- Akka and Play
- Vertx
- Complementaries
- Discovery
- Configuration
- Monitoring
The venerable Servlet Container still has some performance tricks up its sleeve - this talk will demonstrate Apache Tomcat's stability under high load, describe some do's (and some don'ts!), explain how to performance test a Servlet-based application, troubleshoot and tune the container and your application and compare the performance characteristics of the different Tomcat connectors. The presenters will share their combined experience supporting real Tomcat applications for over 20 years and show how a few small changes can make a big, big difference.
Stream Computing (The Engineer's Perspective)Ilya Ganelin
This is a ground zero introduction to stream processing. The focus is on what differentiates them - this turns out not to be performance, but how they solve the challenges scalability, availability, durability, and failure-handling.
We look at Storm, Flink, and Apex as case studies to understand the space.
Virtual Flink Forward 2020: How Streaming Helps Your Staging Environment and ...Flink Forward
In this session, we will look at how Apache Flink can be used to stream anonymized API request and response data from a production environment to make sure staging environments are up-to-date and reflect the most recent features (and bugs) that comprise a service. The talk will also examine how to deal with issues of data retention, throttling, and persistence, finishing with recommendations for how to use these sandbox environments to rapidly prototype and test new features and fixes.
Jolt: Distributed, fault-tolerant test running at scale using MesosMesosphere Inc.
In this presentation, Kyle Kelly, Sunil Shah and Timmy Zhu present Jolt, a system that aims to solve the problem of running integration tests with a high fixed resource cost at scale. We use Mesos plus a custom open source framework called Task Processing to run integration tests for the Yelp website in a massively parallel manner - taking test runs down from a few days to less than an hour.
Messaging, interoperability and log aggregation - a new frameworkTomas Doran
In this talk, I will talk about why log files are horrible, logging log lines, and more structured performance metrics from large scale production applications as well as building reliable, scaleable and flexible large scale software systems in multiple languages.
Why (almost) all log formats are horrible will be explained, and why JSON is a good solution for logging will be discussed, along with a number of message queuing, middleware and network transport technologies, including STOMP, AMQP and ZeroMQ.
The Message::Passing framework will be introduced, along with the logstash.net project which the perl code is interoperable with. These are pluggable frameworks in ruby/java/jruby and perl with pre-written sets of inputs, filters and outputs for many many different systems, message formats and transports.
They were initially designed to be aggregators and filters of data for logging. However they are flexible enough to be used as part of your messaging middleware, or even as a replacement for centralised message queuing systems.
You can have your cake and eat it too - an architecture which is flexible, extensible, scaleable and distributed. Build discrete, loosely coupled components which just pass messages to each other easily.
Integrate and interoperate with your existing code and code bases easily, consume from or publish to any existing message queue, logging or performance metrics system you have installed.
Simple examples using common input and output classes will be demonstrated using the framework, as will easily adding your own custom filters. A number of common messaging middleware patterns will be shown to be trivial to implement.
Some higher level use-cases will also be explored, demonstrating log indexing in ElasticSearch and how to build a responsive platform API using webhooks.
Interoperability is also an important goal for messaging middleware. The logstash.net project will be highlighted and we'll discuss crossing the single language barrier, allowing us to have full integration between java, ruby and perl components, and to easily write bindings into libraries we want to reuse in any of those languages.
Two popular tools for doing Machine Learning on top of JVM ecosystem is H2O and SparkML. This presentation compares these two tools as Machine Learning libraries (Didn't consider Spark's Data Munjing perspective). This work was done during June of 2018.
Performance Benchmarking: Tips, Tricks, and Lessons LearnedTim Callaghan
Presentation covering 25 years worth of lessons learned while performance benchmarking applications and databases. Presented at Percona Live London in November 2014.
A presentation at Twitter's official developer conference, Chirp, about why we use the Scala programming language and how we build services in it. Provides a tour of a number of libraries and tools, both developed at Twitter and otherwise.
Hot to build continuously processing for 24/7 real-time data streaming platform?GetInData
You can read our blog post about it here: https://getindata.com/blog/how-to-build-continuously-processing-for-24-7-real-time-data-streaming-platform/
Hot to build continuously processing for 24/7 real-time data streaming platform?
Sanger, upcoming Openstack for Bio-informaticiansPeter Clapham
Delivery of a new Bio-informatics infrastructure at the Wellcome Trust Sanger Center. We include how to programatically create, manage and provide providence for images used both at Sanger and elsewhere using open source tools and continuous integration.
Amazon Elastic Kubernetes Service (EKS)는 표준 Kubernetes 환경에서 실행되는 어플리케이션과 완벽히 호환됩니다. AWS상에서 Kubernetes 클러스터를 생성하고, 컨테이너 어플리케이션을 배포, 관리, 확장 및 로깅, 모니터링에 대한 실습과 함께, 최근 릴리즈된 AWS IAM 권한을 Pod에 할당하는 방법 등을 Amazon EKS에서 구현하는 과정을 진행합니다.
Why test automation is getting more difficult, and what can be done about it. This slides are from a presentation by Group Director, Product Management at TestPlant, Gordon McKeown, which was presented at the Northern Lights conference in Manchester in April 2016.
Kubernetes at NU.nl (Kubernetes meetup 2019-09-05)Tibo Beijen
Slides of the presentation about Kubernetes practices and learnings at NU.nl.
This presentation was the first of two at the Dutch Kubernetes meetup at the Sanoma Netherlands offices, that took place on Sept. 5th 2019
Oleksandr Khotemskyi - Serverless architecture and how to apply it in Automa...Web Tech Fun
- Different Functions as a Service (e.g. AWS Lambda) - new approach in software architecture.
- Serverless architecture and what is it; options of its usage in different kinds and levels of Testing. We’ll see practices I’ve got during the experiments of AWS Lambda webdriverjs running.
Experience our free, in-depth three-part Tendenci Platform Corporate Membership Management workshop series! In Session 1 on May 14th, 2024, we began with an Introduction and Setup, mastering the configuration of your Corporate Membership Module settings to establish membership types, applications, and more. Then, on May 16th, 2024, in Session 2, we focused on binding individual members to a Corporate Membership and Corporate Reps, teaching you how to add individual members and assign Corporate Representatives to manage dues, renewals, and associated members. Finally, on May 28th, 2024, in Session 3, we covered questions and concerns, addressing any queries or issues you may have.
For more Tendenci AMS events, check out www.tendenci.com/events
First Steps with Globus Compute Multi-User EndpointsGlobus
In this presentation we will share our experiences around getting started with the Globus Compute multi-user endpoint. Working with the Pharmacology group at the University of Auckland, we have previously written an application using Globus Compute that can offload computationally expensive steps in the researcher's workflows, which they wish to manage from their familiar Windows environments, onto the NeSI (New Zealand eScience Infrastructure) cluster. Some of the challenges we have encountered were that each researcher had to set up and manage their own single-user globus compute endpoint and that the workloads had varying resource requirements (CPUs, memory and wall time) between different runs. We hope that the multi-user endpoint will help to address these challenges and share an update on our progress here.
Why React Native as a Strategic Advantage for Startup Innovation.pdfayushiqss
Do you know that React Native is being increasingly adopted by startups as well as big companies in the mobile app development industry? Big names like Facebook, Instagram, and Pinterest have already integrated this robust open-source framework.
In fact, according to a report by Statista, the number of React Native developers has been steadily increasing over the years, reaching an estimated 1.9 million by the end of 2024. This means that the demand for this framework in the job market has been growing making it a valuable skill.
But what makes React Native so popular for mobile application development? It offers excellent cross-platform capabilities among other benefits. This way, with React Native, developers can write code once and run it on both iOS and Android devices thus saving time and resources leading to shorter development cycles hence faster time-to-market for your app.
Let’s take the example of a startup, which wanted to release their app on both iOS and Android at once. Through the use of React Native they managed to create an app and bring it into the market within a very short period. This helped them gain an advantage over their competitors because they had access to a large user base who were able to generate revenue quickly for them.
Designing for Privacy in Amazon Web ServicesKrzysztofKkol1
Data privacy is one of the most critical issues that businesses face. This presentation shares insights on the principles and best practices for ensuring the resilience and security of your workload.
Drawing on a real-life project from the HR industry, the various challenges will be demonstrated: data protection, self-healing, business continuity, security, and transparency of data processing. This systematized approach allowed to create a secure AWS cloud infrastructure that not only met strict compliance rules but also exceeded the client's expectations.
Globus Compute wth IRI Workflows - GlobusWorld 2024Globus
As part of the DOE Integrated Research Infrastructure (IRI) program, NERSC at Lawrence Berkeley National Lab and ALCF at Argonne National Lab are working closely with General Atomics on accelerating the computing requirements of the DIII-D experiment. As part of the work the team is investigating ways to speedup the time to solution for many different parts of the DIII-D workflow including how they run jobs on HPC systems. One of these routes is looking at Globus Compute as a way to replace the current method for managing tasks and we describe a brief proof of concept showing how Globus Compute could help to schedule jobs and be a tool to connect compute at different facilities.
Providing Globus Services to Users of JASMIN for Environmental Data AnalysisGlobus
JASMIN is the UK’s high-performance data analysis platform for environmental science, operated by STFC on behalf of the UK Natural Environment Research Council (NERC). In addition to its role in hosting the CEDA Archive (NERC’s long-term repository for climate, atmospheric science & Earth observation data in the UK), JASMIN provides a collaborative platform to a community of around 2,000 scientists in the UK and beyond, providing nearly 400 environmental science projects with working space, compute resources and tools to facilitate their work. High-performance data transfer into and out of JASMIN has always been a key feature, with many scientists bringing model outputs from supercomputers elsewhere in the UK, to analyse against observational or other model data in the CEDA Archive. A growing number of JASMIN users are now realising the benefits of using the Globus service to provide reliable and efficient data movement and other tasks in this and other contexts. Further use cases involve long-distance (intercontinental) transfers to and from JASMIN, and collecting results from a mobile atmospheric radar system, pushing data to JASMIN via a lightweight Globus deployment. We provide details of how Globus fits into our current infrastructure, our experience of the recent migration to GCSv5.4, and of our interest in developing use of the wider ecosystem of Globus services for the benefit of our user community.
Understanding Globus Data Transfers with NetSageGlobus
NetSage is an open privacy-aware network measurement, analysis, and visualization service designed to help end-users visualize and reason about large data transfers. NetSage traditionally has used a combination of passive measurements, including SNMP and flow data, as well as active measurements, mainly perfSONAR, to provide longitudinal network performance data visualization. It has been deployed by dozens of networks world wide, and is supported domestically by the Engagement and Performance Operations Center (EPOC), NSF #2328479. We have recently expanded the NetSage data sources to include logs for Globus data transfers, following the same privacy-preserving approach as for Flow data. Using the logs for the Texas Advanced Computing Center (TACC) as an example, this talk will walk through several different example use cases that NetSage can answer, including: Who is using Globus to share data with my institution, and what kind of performance are they able to achieve? How many transfers has Globus supported for us? Which sites are we sharing the most data with, and how is that changing over time? How is my site using Globus to move data internally, and what kind of performance do we see for those transfers? What percentage of data transfers at my institution used Globus, and how did the overall data transfer performance compare to the Globus users?
Multiple Your Crypto Portfolio with the Innovative Features of Advanced Crypt...Hivelance Technology
Cryptocurrency trading bots are computer programs designed to automate buying, selling, and managing cryptocurrency transactions. These bots utilize advanced algorithms and machine learning techniques to analyze market data, identify trading opportunities, and execute trades on behalf of their users. By automating the decision-making process, crypto trading bots can react to market changes faster than human traders
Hivelance, a leading provider of cryptocurrency trading bot development services, stands out as the premier choice for crypto traders and developers. Hivelance boasts a team of seasoned cryptocurrency experts and software engineers who deeply understand the crypto market and the latest trends in automated trading, Hivelance leverages the latest technologies and tools in the industry, including advanced AI and machine learning algorithms, to create highly efficient and adaptable crypto trading bots
TROUBLESHOOTING 9 TYPES OF OUTOFMEMORYERRORTier1 app
Even though at surface level ‘java.lang.OutOfMemoryError’ appears as one single error; underlyingly there are 9 types of OutOfMemoryError. Each type of OutOfMemoryError has different causes, diagnosis approaches and solutions. This session equips you with the knowledge, tools, and techniques needed to troubleshoot and conquer OutOfMemoryError in all its forms, ensuring smoother, more efficient Java applications.
Cyaniclab : Software Development Agency Portfolio.pdfCyanic lab
CyanicLab, an offshore custom software development company based in Sweden,India, Finland, is your go-to partner for startup development and innovative web design solutions. Our expert team specializes in crafting cutting-edge software tailored to meet the unique needs of startups and established enterprises alike. From conceptualization to execution, we offer comprehensive services including web and mobile app development, UI/UX design, and ongoing software maintenance. Ready to elevate your business? Contact CyanicLab today and let us propel your vision to success with our top-notch IT solutions.
Exploring Innovations in Data Repository Solutions - Insights from the U.S. G...Globus
The U.S. Geological Survey (USGS) has made substantial investments in meeting evolving scientific, technical, and policy driven demands on storing, managing, and delivering data. As these demands continue to grow in complexity and scale, the USGS must continue to explore innovative solutions to improve its management, curation, sharing, delivering, and preservation approaches for large-scale research data. Supporting these needs, the USGS has partnered with the University of Chicago-Globus to research and develop advanced repository components and workflows leveraging its current investment in Globus. The primary outcome of this partnership includes the development of a prototype enterprise repository, driven by USGS Data Release requirements, through exploration and implementation of the entire suite of the Globus platform offerings, including Globus Flow, Globus Auth, Globus Transfer, and Globus Search. This presentation will provide insights into this research partnership, introduce the unique requirements and challenges being addressed and provide relevant project progress.
Into the Box Keynote Day 2: Unveiling amazing updates and announcements for modern CFML developers! Get ready for exciting releases and updates on Ortus tools and products. Stay tuned for cutting-edge innovations designed to boost your productivity.
Large Language Models and the End of ProgrammingMatt Welsh
Talk by Matt Welsh at Craft Conference 2024 on the impact that Large Language Models will have on the future of software development. In this talk, I discuss the ways in which LLMs will impact the software industry, from replacing human software developers with AI, to replacing conventional software with models that perform reasoning, computation, and problem-solving.
SOCRadar Research Team: Latest Activities of IntelBrokerSOCRadar
The European Union Agency for Law Enforcement Cooperation (Europol) has suffered an alleged data breach after a notorious threat actor claimed to have exfiltrated data from its systems. Infamous data leaker IntelBroker posted on the even more infamous BreachForums hacking forum, saying that Europol suffered a data breach this month.
The alleged breach affected Europol agencies CCSE, EC3, Europol Platform for Experts, Law Enforcement Forum, and SIRIUS. Infiltration of these entities can disrupt ongoing investigations and compromise sensitive intelligence shared among international law enforcement agencies.
However, this is neither the first nor the last activity of IntekBroker. We have compiled for you what happened in the last few days. To track such hacker activities on dark web sources like hacker forums, private Telegram channels, and other hidden platforms where cyber threats often originate, you can check SOCRadar’s Dark Web News.
Stay Informed on Threat Actors’ Activity on the Dark Web with SOCRadar!
Strategies for Successful Data Migration Tools.pptxvarshanayak241
Data migration is a complex but essential task for organizations aiming to modernize their IT infrastructure and leverage new technologies. By understanding common challenges and implementing these strategies, businesses can achieve a successful migration with minimal disruption. Data Migration Tool like Ask On Data play a pivotal role in this journey, offering features that streamline the process, ensure data integrity, and maintain security. With the right approach and tools, organizations can turn the challenge of data migration into an opportunity for growth and innovation.
Innovating Inference - Remote Triggering of Large Language Models on HPC Clus...Globus
Large Language Models (LLMs) are currently the center of attention in the tech world, particularly for their potential to advance research. In this presentation, we'll explore a straightforward and effective method for quickly initiating inference runs on supercomputers using the vLLM tool with Globus Compute, specifically on the Polaris system at ALCF. We'll begin by briefly discussing the popularity and applications of LLMs in various fields. Following this, we will introduce the vLLM tool, and explain how it integrates with Globus Compute to efficiently manage LLM operations on Polaris. Attendees will learn the practical aspects of setting up and remotely triggering LLMs from local machines, focusing on ease of use and efficiency. This talk is ideal for researchers and practitioners looking to leverage the power of LLMs in their work, offering a clear guide to harnessing supercomputing resources for quick and effective LLM inference.
Modern design is crucial in today's digital environment, and this is especially true for SharePoint intranets. The design of these digital hubs is critical to user engagement and productivity enhancement. They are the cornerstone of internal collaboration and interaction within enterprises.
In software engineering, the right architecture is essential for robust, scalable platforms. Wix has undergone a pivotal shift from event sourcing to a CRUD-based model for its microservices. This talk will chart the course of this pivotal journey.
Event sourcing, which records state changes as immutable events, provided robust auditing and "time travel" debugging for Wix Stores' microservices. Despite its benefits, the complexity it introduced in state management slowed development. Wix responded by adopting a simpler, unified CRUD model. This talk will explore the challenges of event sourcing and the advantages of Wix's new "CRUD on steroids" approach, which streamlines API integration and domain event management while preserving data integrity and system resilience.
Participants will gain valuable insights into Wix's strategies for ensuring atomicity in database updates and event production, as well as caching, materialization, and performance optimization techniques within a distributed system.
Join us to discover how Wix has mastered the art of balancing simplicity and extensibility, and learn how the re-adoption of the modest CRUD has turbocharged their development velocity, resilience, and scalability in a high-growth environment.
2. Who am I?
• Paweł Pikuła pawel.pikula@erlang-solutions.com
• Developer @ Erlang Solutions Ltd. Cracow office
• I work on MongooseIM XMPP server and some
IoT related project.
• github.com/ppikula
• twitter: @pawelpikula
3. Agenda
• What is load testing
• Introducing AMOC - our simple load testing tool
• Overview of our test infrastructure
• Breaking a single node
• Distributed scenario (scaling MIM and AMOC
horizontally)
• What to do next ?
4. Prepare the environment
• Install VirtualBox and Vagrant
• git clone https://github.com/ppikula/euc2015/
• Follow instructions from the README file (Setting
up the environment from a usb stick)
5. What is load testing ?
“In software engineering, performance testing is in
general testing performed to determine how a
system performs in terms of responsiveness and
stability under a particular workload. It can also
serve to investigate, measure, validate or verify
other quality attributes of the system, such as
scalability, reliability and resource usage.”
wikipedia
6. Why do we do load test ?
• Measure capacity of the whole system.
• Measure latencies, time to deliver and other quality
attributes.
• Find the bottlenecks in our system.
• Test a bad case scenarios under heavy load (ex. net splits,
overloaded DBs).
• Discover possible race conditions .
• Stress 3rd party software.
9. Types of traffic - spike
!
• Check if the system
can recover after the
spike
• How long does it take
to go back to the
normal state
10. TSUNG
• We‘ve been using it for a long time
• It does the job
• Tsung is dumb - doesn’t understand XMPP
• XML DSL …
• Manual setup
• It is not designed for bidirectional protocols
• HTTP semantics (request, transaction, page time)
• some strange race conditions? (I was never able to login 10K users every
time I tried I had ~9997 of them )
12. OUR USE CASE
• stream management enabled (XEP 198) auto
respond to <r> with <a>
• authentication process requires acquiring a token
from http service
• carbon copies - multiple jabber resources
13. ESCALUS
• esl/ejabberd_tests use it for black box testing
• supports many transports (ws, bosh, tcp, tls)
• stanza generators
• built-in predicates (is_message, is_iq_result)
16. AMOC design goals
• Use the esl/escalus library
• Don’t reinvent the wheel - cooperate with graphite,
ansible, graphite notifications, graylog.
• Simple and practical
• No DSL - plain erlang
• build everything on one host
17. AMOC features
• Automatic deployment and environment setup via
ansible
• Exometer for collecting metrics - very easy to add a
new metric
• Uses modified erlang slave module
• Dynamically increase/decrease the amount of users
• Sends notifications about events mentioned above
18. Environment checklist
• File descriptors limit
• Check firewall rules
• TCP buffers and other options
• Increase local port range
• Create more network interfaces if you want to
generate more than 60K users
19. Why there is a limit of 60K
per interface?
• TCP port is a16 bit integer - we have only 65536
outgoing ports - reserved ones
20. AMOC Inside
!
• AMOC scenario - define init and start function
• AMOC controller - “user interface” start/stop
scenarios.
• The controller spawns users on AMOC slaves in
round robin fashion
22. MongooseIM
• Fork of ejabberd 2.1.8
• Removed “non-scalable” extensions
• Added unit & integration tests (black box testing)
• Added many metrics
• Want to hear more? go to “MongooseIM - The Right
Tool for Scalable Messaging” by Michał Piotrowski
25. Task3
Add custom metric to AMOC
• Message rate (spiral)
• Connected users count (counter)
• Time to deliver (histogram)
26. Future of AMOC
• automatic tests
• allow to pass inter arrival per scenario
• support for multiple scenarios
• ansible recipes for ubuntu/debian family
• dockerized version of AMOC?
• integration with elixir - that will allow us to create DSLs
