The document discusses ChatWork's motivation for developing a distributed ID generator and describes how it works. The key points are:
- ChatWork migrated from MySQL to Kafka/HBase and needed scalable, sortable IDs without a single point of failure.
- Their distributed ID generator is inspired by Snowflake but uses ZooKeeper for coordination between ID workers instead of a timestamp.
- ID workers register with ZooKeeper and clients discover available workers to distribute load. Workers generate IDs using an actor model implementation for scalability and fault tolerance.
JHipster is one of those open-source projects you stumble upon and immediately think, "Of course!" It combines three very successful frameworks in web development: Bootstrap, Angular, and Spring Boot. Bootstrap was one of the first dominant web-component frameworks. Its largest appeal was that it only required a bit of HTML and it worked! All the efforts we made in the Java community to develop web components were shown a better path by Bootstrap. It leveled the playing field in HTML/CSS development, much like Apple's Human Interface Guidelines did for iOS apps.
This talk shows you how to use JHipster to build a Spring Boot API, an Angular UI, and make it all look good with Bootstrap. You'll learn how to deploy the generated project to Heroku too!
Microservices for the Masses with Spring Boot, JHipster and OAuth - GIDS 2019Matt Raible
Microservices are being deployed by many Java Hipsters. If you're working with a large team that needs different release cycles for product components, microservices can be a blessing. If you're working at your VW Restoration Shop and running its online store with your own software, having five services to manage and deploy can be a real pain.
This presentation will show you how to use JHipster to create Angular + Spring Boot apps with a unified front-end. You will leave with the know-how to create your own excellent apps!
Bonus: I'll show you how to use Ionic for JHipster to create native applications on mobile. It's pretty darn slick!
Bootiful Development with Spring Boot and React - Richmond JUG 2018Matt Raible
To simplify development and deployment, you want everything in the same artifact, so you put your React app “inside” your Spring Boot app, right? But what if you could create your React app as a standalone app and make cross-origin requests to your API? A client app that can point to any server makes it easy to test your current client code against other servers (e.g. test, staging, production). This session shows how to develop with Java 8, Spring Boot, React, and TypeScript. You’ll learn how to create REST endpoints with Spring MVC, configure Spring Boot to allow CORS, and create a React app to display its data. If time allows we’ll cover authentication with OpenID Connect and deployment to Cloud Foundry.
Blog: https://developer.okta.com/blog/2017/12/06/bootiful-development-with-spring-boot-and-react
YouTube: https://youtu.be/P6rwKHnXUJI
Microservices for the Masses with Spring Boot, JHipster, and OAuth - Utah JUG...Matt Raible
Microservices are all the rage and being deployed by many Java Hipsters. If you’re working with a large team that needs different release cycles for product components, microservices can be a blessing. If you’re working at your VW Restoration Shop and running its online store with your own software, having five services to manage and deploy can be a real pain.
Share your knowledge and experience about microservices in this informative and code-heavy talk. We’ll use JHipster (a Yeoman generator) to create Angular + Spring Boot apps on separate instances with a unified front-end. I’ll also show you options for securing your API gateway and individual applications using JWT. Heroku, Kubernetes, Docker, ELK, Spring Cloud, Okta; there will be plenty of interesting demos to see!
In an era of microservices and cloud computing, Micronaut incorporates support for cloud-friendly reliability patterns - from load balancing and circuit breakers to shared configuration and service discovery - and makes these features available and easily configurable from within your application. From the ground up, Micronaut applications are "natively" cloud-native.
The Micronaut framework values at the core, enabling code simplicity and developer productivity. Micronaut offers many additional features for a new class of applications (e.g., microservices, serverless deployments, etc.) that may not be well-suited for monoliths.
JHipster is one of those open-source projects you stumble upon and immediately think, "Of course!" It combines three very successful frameworks in web development: Bootstrap, Angular, and Spring Boot. Bootstrap was one of the first dominant web-component frameworks. Its largest appeal was that it only required a bit of HTML and it worked! All the efforts we made in the Java community to develop web components were shown a better path by Bootstrap. It leveled the playing field in HTML/CSS development, much like Apple's Human Interface Guidelines did for iOS apps.
This talk shows you how to use JHipster to build a Spring Boot API, an Angular UI, and make it all look good with Bootstrap. You'll learn how to deploy the generated project to Heroku too!
Microservices for the Masses with Spring Boot, JHipster and OAuth - GIDS 2019Matt Raible
Microservices are being deployed by many Java Hipsters. If you're working with a large team that needs different release cycles for product components, microservices can be a blessing. If you're working at your VW Restoration Shop and running its online store with your own software, having five services to manage and deploy can be a real pain.
This presentation will show you how to use JHipster to create Angular + Spring Boot apps with a unified front-end. You will leave with the know-how to create your own excellent apps!
Bonus: I'll show you how to use Ionic for JHipster to create native applications on mobile. It's pretty darn slick!
Bootiful Development with Spring Boot and React - Richmond JUG 2018Matt Raible
To simplify development and deployment, you want everything in the same artifact, so you put your React app “inside” your Spring Boot app, right? But what if you could create your React app as a standalone app and make cross-origin requests to your API? A client app that can point to any server makes it easy to test your current client code against other servers (e.g. test, staging, production). This session shows how to develop with Java 8, Spring Boot, React, and TypeScript. You’ll learn how to create REST endpoints with Spring MVC, configure Spring Boot to allow CORS, and create a React app to display its data. If time allows we’ll cover authentication with OpenID Connect and deployment to Cloud Foundry.
Blog: https://developer.okta.com/blog/2017/12/06/bootiful-development-with-spring-boot-and-react
YouTube: https://youtu.be/P6rwKHnXUJI
Microservices for the Masses with Spring Boot, JHipster, and OAuth - Utah JUG...Matt Raible
Microservices are all the rage and being deployed by many Java Hipsters. If you’re working with a large team that needs different release cycles for product components, microservices can be a blessing. If you’re working at your VW Restoration Shop and running its online store with your own software, having five services to manage and deploy can be a real pain.
Share your knowledge and experience about microservices in this informative and code-heavy talk. We’ll use JHipster (a Yeoman generator) to create Angular + Spring Boot apps on separate instances with a unified front-end. I’ll also show you options for securing your API gateway and individual applications using JWT. Heroku, Kubernetes, Docker, ELK, Spring Cloud, Okta; there will be plenty of interesting demos to see!
In an era of microservices and cloud computing, Micronaut incorporates support for cloud-friendly reliability patterns - from load balancing and circuit breakers to shared configuration and service discovery - and makes these features available and easily configurable from within your application. From the ground up, Micronaut applications are "natively" cloud-native.
The Micronaut framework values at the core, enabling code simplicity and developer productivity. Micronaut offers many additional features for a new class of applications (e.g., microservices, serverless deployments, etc.) that may not be well-suited for monoliths.
Meeting rooms are talking! are you listening?Cisco DevNet
How can you tell if meeting room A302 is occupied right now? Ask an API! The same Cisco Collab devices that provide high-quality video are also embedding a rich API where you can get real-time info and create a personalized experience with custom UI controls. In this talk, we’ll detail how to create controls to turn off the lights or take the curtains down, how to build interactive maps that show rooms occupation in React, or build a Maze game in Javascript and deploy it to the latest Cisco Collab devices. If you love modern user experiences, IoT, know a bit Javascript, come get inspired!
Meeting rooms are talking. Are you listeningCisco DevNet
How can you tell if meeting room A302 is occupied right now? Ask an API! The same Cisco Collab devices that provide high-quality video are also embedding a rich API where you can get real-time info and create a personalized experience with custom UI controls. In this talk, we’ll detail how to create controls to turn off the lights or take the curtains down, how to build interactive maps that show rooms occupation in React, or build a Maze game in Javascript and deploy it to the latest Cisco Collab devices. If you love modern user experiences, IoT, know a bit Javascript, come get inspired!
Why And When Should We Consider Stream Processing In Our Solutions Teqnation ...Soroosh Khodami
Session Recording on Youtube
https://www.youtube.com/watch?v=uWPZQ_HMy10
- Session Description
Do you find yourself bombarded with buzzwords and overwhelmed by the rapid emergence of new technologies? "Stream Processing" is a tech buzzword that has been around for some time but is still unfamiliar to many. Join this session to discover its potential in software systems. I will share insights from Apache Flink, Apache Beam, Google Dataflow, and my experiences at Bol.com (the biggest e-commerce platform in the Netherlands) as we cover:
- Stream Processing overview: main concepts and features
- Apache Beam vs. Spring Boot comparison
- Key Considerations for Using Stream Processing
- Learning strategies to navigate this evolving landscape.
Timings API: Performance Assertion during the functional testingPetrosPlakogiannis
Most teams at GoDaddy follow a CI/CD process where Selenium is commonly used for test automation. When they realized that the Selenium WebDrivers provide access to the same APIs as real browsers, including the widely supported W3C performance API, the concept for the cicd-perf-api webservice was born! By inserting some JavaScript code into the WebDriver object, performance data can be collected and posted back to the webservice. The response from the webservice includes a boolean field that testers can use for assertion - just like they would with functional checks! The field indicates whether performance was above/below the baseline. With this talk Petros will give an introduction to the concept of the Timings API and Marcel will be online in order to tell us about the future of it.
Stève Sfartz - Meeting rooms are talking! Are you listening? - Codemotion Ber...Codemotion
How can you tell if meeting room A302 is occupied right now? Ask an API! The same Cisco Collab devices that provide high-quality video are also embedding a rich API where you can get real-time info and create a personalized experience with custom UI controls. In this talk, we’ll detail how to create controls to turn off the lights or take the curtains down, how to build interactive maps that show rooms occupation in React, or build a Maze game in Javascript and deploy it to the latest Cisco Collab devices. If you love modern user experiences, IoT, know a bit Javascript, come get inspired!
Stève Sfartz - Meeting rooms are talking! Are you listening? - Codemotion Ber...Codemotion
How can you tell if meeting room A302 is occupied right now? Ask an API! The same Cisco Collab devices that provide high-quality video are also embedding a rich API where you can get real-time info and create a personalized experience with custom UI controls. In this talk, we’ll detail how to create controls to turn off the lights or take the curtains down, how to build interactive maps that show rooms occupation in React, or build a Maze game in Javascript and deploy it to the latest Cisco Collab devices. If you love modern user experiences, IoT, know a bit Javascript, come get inspired!
Integrated, Automated Video Room Systems - Webex Devices - Cisco Live Orlando...Cisco DevNet
Cisco’s DX / MX / SX and Room Kit immersive telepresence room systems are highly customizable and configurable, providing multiple ways to integrate with room amenities like lighting, shades and projectors as well as provide customized user/presenter controls. Application developers can leverage the Cisco Collaboration Endpoint - CE API to examine meeting rooms utilization via people counting, but also initiate video calls.
Join us for this overview and demo-rich session to learn how to create In-Room Controls, Javascript Macros and xAPI calls.
DEVNET-2071
https://www.ciscolive.com/us/learn/sessions/session-catalog/?search=DEVNET-2071
Jon Noble. Jon will give a brief overview of why you should consider security as part of your CloudStack deployment, why your approach to security needs to be different than in a traditional environment, and also talk about some of the motives behind the attacks – why they attack you and what they do once they have compromised a system.
Leveraging the strength of OSGi to deliver a convergent IoT Ecosystem - O Log...mfrancis
The “internet of things” is the next revolutionary wave following profound changes brought to us by Personal Computers (connecting places) and Mobile Phones (connecting people on the go). This third wave heralds the beginning of the new era of pervasive connectivity, embedded intelligence, and application convergence. It will be the world where smart things will communicate among themselves and with us enabling greener, more efficient, and at the same time more comfortable environment.
This talk will present a platform and products designed to serve the new markets enabled by the Internet of Things, with a particular focus on the value of the OSGi framework enabling convergence of Home Automation, Smart Energy, Electric Vehicle Charging, and e-health on a single remotely manageable platform. It will also provide insights on how the platform was developed leveraging the extensibility offered by the OSGi framework and ProSyst’s modular architecture.
The built-in OSGi stack provides Java-level abstraction of the network interfaces and Smart Energy Profile 2.0 stack as well as cloud integration features such as web server, web services and standards-based remote management. The OSGi framework is the key enabler of the product lifecycle and remote application management mandatory for service provider driven deployments. The Smart Energy 2.0 standard is a key element of the future smart grid. And the work presented in this talk describes the first platform integrating the SEP 2.0 protocol stack with an OSGi based middleware. The OSGi based solution also provides higher level of device security through the use of secure element. The UDK-21 is build around a System-on-Chip STreamPlug (ST2100), the solution features a fully integrated HomePlug PHY/MAC and Analog Front End combined with the ARM926EJ-S processor and a rich set of interfaces.
A demo showing Smart Energy Profile 2.0 use cases will outline these features. The demo will show how web based applications can interact with the OSGi stack on the already publicly available UDK-21 based gateway to control remote devices, such as a thermostat or an electric load. The access to SEP 2.0 devices will be done by the means of JSON-RPC based APIs, independent of the underlying device protocol, hence highlighting the benefits of a generic protocol agnostic architecture from the application standpoint. Other examples of the products that can be built around UDK-21 include Electric Vehicle Charger, Smart Meter, and a Basement Sensor Hub.
Getting Started: Intro to Telegraf - July 2021InfluxData
In this training webinar, Samantha Wang will walk you through the basics of Telegraf. Telegraf is the open source server agent which is used to collect metrics from your stacks, sensors and systems. It is InfluxDB’s native data collector that supports nearly 300 inputs and outputs. Learn how to send data from a variety of systems, apps, databases and services in the appropriate format to InfluxDB. Discover tips and tricks on how to write your own plugins. The know-how learned here can be applied to a multitude of use cases and sectors. This one-hour session will include the training and time for live Q&A.
Join this training as Samantha Wang dives into:
Types of Telegraf plugins (i.e. input, output, aggregator and processor)
Specific plugins including Execd input plugins and the Starlark processor plugin
How to install and start using Telegraf
We issued 20 young coders with smartphones pre-loaded with an app that gathered data on the network activity of the other apps they used. Their data was captured using the Python-based data portal CKAN, analysed with SciKit-Learn, then returned to them using Docker and the Ipython Notebook. Python also played a role in the reverse-engineering of some of the more interesting apps we discovered.
[CB21] The Lazarus Group's Attack Operations Targeting Japan by Shusei Tomona...CODE BLUE
The activities of the Lazarus group have not been focused on in Japan. However, in our recent incident response efforts, more and more domestic organizations have become targets of the Lazarus Group.
This presentation will explain in detail the cases where Japanese organizations were targeted by the Lazarus group.
The presentation will begin with an overview of the Lazarus group's attack campaigns, linking the attack operations we describe to other publicly available information. Then, we will focus on two of the Lazarus campaigns confirmed in Japan in 2020, and introduce the latest TTPs, including the characteristics of the malware and the tools used in the attacks.
The first one, Operation Dream Job, is an attack campaign targeting the defense industry, and attacks have been confirmed worldwide. A number of malware have been confirmed to have been used in this attack campaign, and the details of these will be explained. We will also introduce the tools and techniques used by the attackers in the network, and organize the TTP in ATT&CK.
The second attack, Operation JTrack, was an attack campaign targeting Japanese organizations, and multiple organizations were targeted. The second attack campaign, Operation JTrack, targeted multiple organizations in Japan. Several malware and tools were also used in this attack campaign, which will be explained in detail.
Finally, the TTPs of the two attack campaigns presented will be compared to show the information that can be used for countermeasures.<br>Throughout this presentation, the Lazarus group Through this presentation, you will be able to understand the latest TTPs of the Lazarus group and use them to take action in the future.
Non-blocking IO to tame distributed systems ー How and why ChatWork uses async...TanUkkii
title: ノンブロッキングIOで分散システム を手懐ける ーチャットワークでのasynchbaseの利用
event: LINE Developer Meetup in Tokyo #28 - JVM非同期プログラミング -
https://line.connpass.com/event/78912/
Meeting rooms are talking! are you listening?Cisco DevNet
How can you tell if meeting room A302 is occupied right now? Ask an API! The same Cisco Collab devices that provide high-quality video are also embedding a rich API where you can get real-time info and create a personalized experience with custom UI controls. In this talk, we’ll detail how to create controls to turn off the lights or take the curtains down, how to build interactive maps that show rooms occupation in React, or build a Maze game in Javascript and deploy it to the latest Cisco Collab devices. If you love modern user experiences, IoT, know a bit Javascript, come get inspired!
Meeting rooms are talking. Are you listeningCisco DevNet
How can you tell if meeting room A302 is occupied right now? Ask an API! The same Cisco Collab devices that provide high-quality video are also embedding a rich API where you can get real-time info and create a personalized experience with custom UI controls. In this talk, we’ll detail how to create controls to turn off the lights or take the curtains down, how to build interactive maps that show rooms occupation in React, or build a Maze game in Javascript and deploy it to the latest Cisco Collab devices. If you love modern user experiences, IoT, know a bit Javascript, come get inspired!
Why And When Should We Consider Stream Processing In Our Solutions Teqnation ...Soroosh Khodami
Session Recording on Youtube
https://www.youtube.com/watch?v=uWPZQ_HMy10
- Session Description
Do you find yourself bombarded with buzzwords and overwhelmed by the rapid emergence of new technologies? "Stream Processing" is a tech buzzword that has been around for some time but is still unfamiliar to many. Join this session to discover its potential in software systems. I will share insights from Apache Flink, Apache Beam, Google Dataflow, and my experiences at Bol.com (the biggest e-commerce platform in the Netherlands) as we cover:
- Stream Processing overview: main concepts and features
- Apache Beam vs. Spring Boot comparison
- Key Considerations for Using Stream Processing
- Learning strategies to navigate this evolving landscape.
Timings API: Performance Assertion during the functional testingPetrosPlakogiannis
Most teams at GoDaddy follow a CI/CD process where Selenium is commonly used for test automation. When they realized that the Selenium WebDrivers provide access to the same APIs as real browsers, including the widely supported W3C performance API, the concept for the cicd-perf-api webservice was born! By inserting some JavaScript code into the WebDriver object, performance data can be collected and posted back to the webservice. The response from the webservice includes a boolean field that testers can use for assertion - just like they would with functional checks! The field indicates whether performance was above/below the baseline. With this talk Petros will give an introduction to the concept of the Timings API and Marcel will be online in order to tell us about the future of it.
Stève Sfartz - Meeting rooms are talking! Are you listening? - Codemotion Ber...Codemotion
How can you tell if meeting room A302 is occupied right now? Ask an API! The same Cisco Collab devices that provide high-quality video are also embedding a rich API where you can get real-time info and create a personalized experience with custom UI controls. In this talk, we’ll detail how to create controls to turn off the lights or take the curtains down, how to build interactive maps that show rooms occupation in React, or build a Maze game in Javascript and deploy it to the latest Cisco Collab devices. If you love modern user experiences, IoT, know a bit Javascript, come get inspired!
Stève Sfartz - Meeting rooms are talking! Are you listening? - Codemotion Ber...Codemotion
How can you tell if meeting room A302 is occupied right now? Ask an API! The same Cisco Collab devices that provide high-quality video are also embedding a rich API where you can get real-time info and create a personalized experience with custom UI controls. In this talk, we’ll detail how to create controls to turn off the lights or take the curtains down, how to build interactive maps that show rooms occupation in React, or build a Maze game in Javascript and deploy it to the latest Cisco Collab devices. If you love modern user experiences, IoT, know a bit Javascript, come get inspired!
Integrated, Automated Video Room Systems - Webex Devices - Cisco Live Orlando...Cisco DevNet
Cisco’s DX / MX / SX and Room Kit immersive telepresence room systems are highly customizable and configurable, providing multiple ways to integrate with room amenities like lighting, shades and projectors as well as provide customized user/presenter controls. Application developers can leverage the Cisco Collaboration Endpoint - CE API to examine meeting rooms utilization via people counting, but also initiate video calls.
Join us for this overview and demo-rich session to learn how to create In-Room Controls, Javascript Macros and xAPI calls.
DEVNET-2071
https://www.ciscolive.com/us/learn/sessions/session-catalog/?search=DEVNET-2071
Jon Noble. Jon will give a brief overview of why you should consider security as part of your CloudStack deployment, why your approach to security needs to be different than in a traditional environment, and also talk about some of the motives behind the attacks – why they attack you and what they do once they have compromised a system.
Leveraging the strength of OSGi to deliver a convergent IoT Ecosystem - O Log...mfrancis
The “internet of things” is the next revolutionary wave following profound changes brought to us by Personal Computers (connecting places) and Mobile Phones (connecting people on the go). This third wave heralds the beginning of the new era of pervasive connectivity, embedded intelligence, and application convergence. It will be the world where smart things will communicate among themselves and with us enabling greener, more efficient, and at the same time more comfortable environment.
This talk will present a platform and products designed to serve the new markets enabled by the Internet of Things, with a particular focus on the value of the OSGi framework enabling convergence of Home Automation, Smart Energy, Electric Vehicle Charging, and e-health on a single remotely manageable platform. It will also provide insights on how the platform was developed leveraging the extensibility offered by the OSGi framework and ProSyst’s modular architecture.
The built-in OSGi stack provides Java-level abstraction of the network interfaces and Smart Energy Profile 2.0 stack as well as cloud integration features such as web server, web services and standards-based remote management. The OSGi framework is the key enabler of the product lifecycle and remote application management mandatory for service provider driven deployments. The Smart Energy 2.0 standard is a key element of the future smart grid. And the work presented in this talk describes the first platform integrating the SEP 2.0 protocol stack with an OSGi based middleware. The OSGi based solution also provides higher level of device security through the use of secure element. The UDK-21 is build around a System-on-Chip STreamPlug (ST2100), the solution features a fully integrated HomePlug PHY/MAC and Analog Front End combined with the ARM926EJ-S processor and a rich set of interfaces.
A demo showing Smart Energy Profile 2.0 use cases will outline these features. The demo will show how web based applications can interact with the OSGi stack on the already publicly available UDK-21 based gateway to control remote devices, such as a thermostat or an electric load. The access to SEP 2.0 devices will be done by the means of JSON-RPC based APIs, independent of the underlying device protocol, hence highlighting the benefits of a generic protocol agnostic architecture from the application standpoint. Other examples of the products that can be built around UDK-21 include Electric Vehicle Charger, Smart Meter, and a Basement Sensor Hub.
Getting Started: Intro to Telegraf - July 2021InfluxData
In this training webinar, Samantha Wang will walk you through the basics of Telegraf. Telegraf is the open source server agent which is used to collect metrics from your stacks, sensors and systems. It is InfluxDB’s native data collector that supports nearly 300 inputs and outputs. Learn how to send data from a variety of systems, apps, databases and services in the appropriate format to InfluxDB. Discover tips and tricks on how to write your own plugins. The know-how learned here can be applied to a multitude of use cases and sectors. This one-hour session will include the training and time for live Q&A.
Join this training as Samantha Wang dives into:
Types of Telegraf plugins (i.e. input, output, aggregator and processor)
Specific plugins including Execd input plugins and the Starlark processor plugin
How to install and start using Telegraf
We issued 20 young coders with smartphones pre-loaded with an app that gathered data on the network activity of the other apps they used. Their data was captured using the Python-based data portal CKAN, analysed with SciKit-Learn, then returned to them using Docker and the Ipython Notebook. Python also played a role in the reverse-engineering of some of the more interesting apps we discovered.
[CB21] The Lazarus Group's Attack Operations Targeting Japan by Shusei Tomona...CODE BLUE
The activities of the Lazarus group have not been focused on in Japan. However, in our recent incident response efforts, more and more domestic organizations have become targets of the Lazarus Group.
This presentation will explain in detail the cases where Japanese organizations were targeted by the Lazarus group.
The presentation will begin with an overview of the Lazarus group's attack campaigns, linking the attack operations we describe to other publicly available information. Then, we will focus on two of the Lazarus campaigns confirmed in Japan in 2020, and introduce the latest TTPs, including the characteristics of the malware and the tools used in the attacks.
The first one, Operation Dream Job, is an attack campaign targeting the defense industry, and attacks have been confirmed worldwide. A number of malware have been confirmed to have been used in this attack campaign, and the details of these will be explained. We will also introduce the tools and techniques used by the attackers in the network, and organize the TTP in ATT&CK.
The second attack, Operation JTrack, was an attack campaign targeting Japanese organizations, and multiple organizations were targeted. The second attack campaign, Operation JTrack, targeted multiple organizations in Japan. Several malware and tools were also used in this attack campaign, which will be explained in detail.
Finally, the TTPs of the two attack campaigns presented will be compared to show the information that can be used for countermeasures.<br>Throughout this presentation, the Lazarus group Through this presentation, you will be able to understand the latest TTPs of the Lazarus group and use them to take action in the future.
Similar to Distributed ID generator in ChatWork (20)
Non-blocking IO to tame distributed systems ー How and why ChatWork uses async...TanUkkii
title: ノンブロッキングIOで分散システム を手懐ける ーチャットワークでのasynchbaseの利用
event: LINE Developer Meetup in Tokyo #28 - JVM非同期プログラミング -
https://line.connpass.com/event/78912/
COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
12. ID worker discovery via ZooKeeper
ZooKeeper
ID
client
/id-worker/1
Command: GetChildren
Path: /id-worker/1
Watch: True
Router
Datacenter 1
root node
command/event
watch
13. ID worker discovery via ZooKeeper
ZooKeeper
ID
client
/id-worker/1
ID
worker
Command: GetChildren
Path: /id-worker/1
Watch: True
Router
command/event
watch
14. ID worker discovery via ZooKeeper
ZooKeeper
ID
client
/id-worker/1
ID
worker
/id-worker/1/1 akka.tcp://system@11.2.9.14:***
Command: Create
Path: /id-worker/1/1
Data: akka.tcp://system@11.2.9.14:***
mode: Ephemeral
Router
command/event
watch
15. ID worker discovery via ZooKeeper
ZooKeeper
ID
client
/id-worker/1
ID
worker
/id-worker/1/1 akka.tcp://system@11.2.9.14:***
Event: NodeChildrenChanged
Path: /id-worker/1
Router
command/event
watch
16. ID worker discovery via ZooKeeper
ZooKeeper
ID
client
/id-worker/1
ID
worker
/id-worker/1/1 akka.tcp://system@11.2.9.14:***
Command: GetChildren
Path: /id-worker/1
Watch: True
Router
command/event
watch
17. ID worker discovery via ZooKeeper
ZooKeeper
ID
client
/id-worker/1
ID
worker
/id-worker/1/1 akka.tcp://system@11.2.9.14:***
Command: GetData
Path: /id-worker/1/1
Watch: False
Router
command/event
watch
18. ID worker discovery via ZooKeeper
ZooKeeper
ID
client
/id-worker/1
ID
worker
/id-worker/1/1 akka.tcp://system@11.2.9.14:***
Identify
Router
command/event
watch
19. ID worker discovery via ZooKeeper
ZooKeeper
ID
client
/id-worker/1
ID
worker
/id-worker/1/1 akka.tcp://system@11.2.9.14:***
ActorIdentity worker1
Router
command/event
watch
20. ID worker discovery via ZooKeeper
ZooKeeper
ID
client
/id-worker/1
ID
worker
/id-worker/1/1 akka.tcp://system@11.2.9.14:***
ID request/response
worker1
Router
command/event
watch
21. ID worker discovery via ZooKeeper
ZooKeeper
ID
client
/id-worker/1
ID
worker
/id-worker/1/1 akka.tcp://system@11.2.9.14:***
ID
worker
Command: GetChildren
Path: /id-worker/1
Watch: True
worker1
Router
command/event
watch
22. ID worker discovery via ZooKeeper
ZooKeeper
ID
client
/id-worker/1
ID
worker
/id-worker/1/1 akka.tcp://system@11.2.9.14:***
ID
worker
/id-worker/1/2 akka.tcp://system@11.2.9.15:***
Command: Create
Path: /id-worker/1/2
Data: akka.tcp://system@11.2.9.15:***
mode: Ephemeral
worker1
Router
command/event
watch
23. ID worker discovery via ZooKeeper
ZooKeeper
ID
client
/id-worker/1
ID
worker
/id-worker/1/1 akka.tcp://system@11.2.9.14:***
ID
worker
/id-worker/1/2 akka.tcp://system@11.2.9.15:***
Event: NodeChildrenChanged
Path: /id-worker/1
worker1
Router
command/event
watch
24. ID worker discovery via ZooKeeper
ZooKeeper
ID
client
/id-worker/1
ID
worker
/id-worker/1/1 akka.tcp://system@11.2.9.14:***
ID
worker
/id-worker/1/2 akka.tcp://system@11.2.9.15:***
Command: GetChildren
Path: /id-worker/1
Watch: True
worker1
Router
command/event
watch
25. ID worker discovery via ZooKeeper
ZooKeeper
ID
client
/id-worker/1
ID
worker
/id-worker/1/1 akka.tcp://system@11.2.9.14:***
ID
worker
/id-worker/1/2 akka.tcp://system@11.2.9.15:***
Command: GetData
Path: /id-worker/1/2
Watch: False
worker1
Router
command/event
watch
26. ID worker discovery via ZooKeeper
ZooKeeper
ID
client
/id-worker/1
ID
worker
/id-worker/1/1 akka.tcp://system@11.2.9.14:***
ID
worker
/id-worker/1/2 akka.tcp://system@11.2.9.15:***
Identify worker1
Router
command/event
watch
27. ID worker discovery via ZooKeeper
ZooKeeper
ID
client
/id-worker/1
ID
worker
/id-worker/1/1 akka.tcp://system@11.2.9.14:***
worker1ID
worker
/id-worker/1/2 akka.tcp://system@11.2.9.15:***
ActorIdentity
worker2
Router
command/event
watch
31. Worker ID Consensus process
1. No worker ID duplication invariant
ZooKeeper
/id-worker/1
ID
worker
Command: GetChildren
Path: /id-worker/1
Watch: True
command/event
watch