The document compares the architectures and features of the Firefox and Chromium web browsers. It outlines their reference architectures, functional requirements like user interfaces, media playback, and downloads management. It also discusses their non-functional requirements including security, performance, and extensibility. Finally, it provides a high-level comparison of their architectures and a deeper look at differences in their security models.
Top 5 Reasons To Consider SolarWinds IPAM Over InfobloxSolarWinds
Are you looking to add or update your IP Address Management Solution? Comparing SolarWinds IP Address Manager (IPAM) and Infoblox Trinzic? Let us walk you through the Top 5 reasons why IPAM may be the better choice for you.
Moving Beyond Lambda Architectures with Apache KuduCloudera, Inc.
-Kudu is a new storage layer for the Hadoop ecosystem that enables fast analytics on fast data; it splits the difference between the fast read/write of HBase and the fast scans of HDFS...while compromising minimally on performance. It can pair with Spark, Impala, or MapReduce.
-In the past, a lambda architecture was needed to run analytics on real-time data – that is, a complex architecture that created separate a “speed layer” for rapid availability/query/updates, and a “batch layer” for running analytics scans. This was complicated and took lots of tuning.
-With Kudu, the Apache ecosystem now has a simplified storage solution for analytic scans on rapidly updating data, eliminating the need for the aforementioned hybrid lambda architectures.
Top 5 Reasons To Consider SolarWinds IPAM Over InfobloxSolarWinds
Are you looking to add or update your IP Address Management Solution? Comparing SolarWinds IP Address Manager (IPAM) and Infoblox Trinzic? Let us walk you through the Top 5 reasons why IPAM may be the better choice for you.
Moving Beyond Lambda Architectures with Apache KuduCloudera, Inc.
-Kudu is a new storage layer for the Hadoop ecosystem that enables fast analytics on fast data; it splits the difference between the fast read/write of HBase and the fast scans of HDFS...while compromising minimally on performance. It can pair with Spark, Impala, or MapReduce.
-In the past, a lambda architecture was needed to run analytics on real-time data – that is, a complex architecture that created separate a “speed layer” for rapid availability/query/updates, and a “batch layer” for running analytics scans. This was complicated and took lots of tuning.
-With Kudu, the Apache ecosystem now has a simplified storage solution for analytic scans on rapidly updating data, eliminating the need for the aforementioned hybrid lambda architectures.
In this session, Lucian talks about monitoring CloudStack and its related components. What are the best practices and what do you need to track closely to ensure your cloud reliability.
Lucian is a long-time sysadmin and Apache Cloustack user and contributor. He has a background in hosting, virtualisation and datacentre operations, but is now working full time on Cloudstack.
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CloudStack Collaboration Conference 2022 took place on 14th-16th November in Sofia, Bulgaria and virtually. The day saw a hybrid get-together of the global CloudStack community hosting 370 attendees. The event hosted 43 sessions from leading CloudStack experts, users and skilful engineers from the open-source world, which included: technical talks, user stories, new features and integrations presentations and more.
Edge computing has been gaining popularity as it defines a model that brings compute and storage closer to where they are consumed by the end-user. By being closer to the end-user a better experience can be provided with a reduction in overall latency, lower bandwidth requirements, lower TCO, more flexible hardware/software model, while also ensuring security and reliability. In this talk, Abhishek discusses aligning Apache CloudStack with this evolving cloud computing model and supporting Edge Zones, which can be also looked upon as lightweight zones, with minimal resources.
Abhishek Kumar is a committer of the Apache CloudStack project and has worked on the notable features such as VM ingestion, CloudStack Kubernetes Service, IPv6 support, etc. He works as a Software Engineer at ShapeBlue.
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CloudStack Collaboration Conference 2022 took place on 14th-16th November in Sofia, Bulgaria and virtually. The day saw a hybrid get-together of the global CloudStack community hosting 370 attendees. The event hosted 43 sessions from leading CloudStack experts, users and skilful engineers from the open-source world, which included: technical talks, user stories, new features and integrations presentations and more.
CoC23_ Looking at the New Features of Apache NiFiTimothy Spann
CoC23_ Looking at the New Features of Apache NiFi
Apache NiFi has a lot of new features, processors and best practices that have arrived in the last year or so.
I will walk through building flows using the latest tips, techniques and processor.
I will and change a number of data flows utilizing the latest NiFi version and point out gotchas and some never dos. The deck will act as a take-away with notes, tips and guides to what we covered.
===> Any NiFi 1.23+ and 2.0 in progress features people want to see?
Lesson Learned: Transforming from ClearCase to GitNoa Harel
This is a short case study on moving to Git from IBM Rational ClearCase (that was delivered during Git Merge 2017 conference). Attendees will learn about challenges we faced and how we resolved them, plus some technical tips and insights.
IBM informix: compared performance efficiency between physical server and Vir...BeGooden-IT Consulting
This presentation is about servers virtualization applied to IBM Informix DBMS. It features comparisons between different virtualization technologies, including hardware benchmark and TPC-C benchmark
Part of a series introducing desktop delivery technologies. This talk introduced Remote Desktops Services (RDS) in Windows Server 2012. It explains what is Virtual Desktop Infrastructure (VDI), how applications are deliver, covers some key challenges including management and monitoring. It wraps up with where you can find out more including courses and MVA.
In this session, Lucian talks about monitoring CloudStack and its related components. What are the best practices and what do you need to track closely to ensure your cloud reliability.
Lucian is a long-time sysadmin and Apache Cloustack user and contributor. He has a background in hosting, virtualisation and datacentre operations, but is now working full time on Cloudstack.
-----------------------------------------
CloudStack Collaboration Conference 2022 took place on 14th-16th November in Sofia, Bulgaria and virtually. The day saw a hybrid get-together of the global CloudStack community hosting 370 attendees. The event hosted 43 sessions from leading CloudStack experts, users and skilful engineers from the open-source world, which included: technical talks, user stories, new features and integrations presentations and more.
Edge computing has been gaining popularity as it defines a model that brings compute and storage closer to where they are consumed by the end-user. By being closer to the end-user a better experience can be provided with a reduction in overall latency, lower bandwidth requirements, lower TCO, more flexible hardware/software model, while also ensuring security and reliability. In this talk, Abhishek discusses aligning Apache CloudStack with this evolving cloud computing model and supporting Edge Zones, which can be also looked upon as lightweight zones, with minimal resources.
Abhishek Kumar is a committer of the Apache CloudStack project and has worked on the notable features such as VM ingestion, CloudStack Kubernetes Service, IPv6 support, etc. He works as a Software Engineer at ShapeBlue.
-----------------------------------------
CloudStack Collaboration Conference 2022 took place on 14th-16th November in Sofia, Bulgaria and virtually. The day saw a hybrid get-together of the global CloudStack community hosting 370 attendees. The event hosted 43 sessions from leading CloudStack experts, users and skilful engineers from the open-source world, which included: technical talks, user stories, new features and integrations presentations and more.
CoC23_ Looking at the New Features of Apache NiFiTimothy Spann
CoC23_ Looking at the New Features of Apache NiFi
Apache NiFi has a lot of new features, processors and best practices that have arrived in the last year or so.
I will walk through building flows using the latest tips, techniques and processor.
I will and change a number of data flows utilizing the latest NiFi version and point out gotchas and some never dos. The deck will act as a take-away with notes, tips and guides to what we covered.
===> Any NiFi 1.23+ and 2.0 in progress features people want to see?
Lesson Learned: Transforming from ClearCase to GitNoa Harel
This is a short case study on moving to Git from IBM Rational ClearCase (that was delivered during Git Merge 2017 conference). Attendees will learn about challenges we faced and how we resolved them, plus some technical tips and insights.
IBM informix: compared performance efficiency between physical server and Vir...BeGooden-IT Consulting
This presentation is about servers virtualization applied to IBM Informix DBMS. It features comparisons between different virtualization technologies, including hardware benchmark and TPC-C benchmark
Part of a series introducing desktop delivery technologies. This talk introduced Remote Desktops Services (RDS) in Windows Server 2012. It explains what is Virtual Desktop Infrastructure (VDI), how applications are deliver, covers some key challenges including management and monitoring. It wraps up with where you can find out more including courses and MVA.
WebKit and Blink: Open Development Powering the HTML5 Revolution (LinuxCon No...Igalia
By Juan José Sánchez Penas.
WebKit is a web rendering engine (HTML, JavaScript, CSS) with a generic part (WebCore, JSEngine), and 'ports' for specific platforms that implement bits like rendering, networking or multimedia. In the WebKit community, companies&individuals cooperate to evolve a complex codebase. Given the popularity of HTML5 and web tech, WebKit is a key open source project. Recently, Google announced Blink, a fork of WebKit, with consequences for the project still difficult to predict. Igalia's Browsers team maintains the WebKitGTK+ port and is top contributor to WebCore, JSC, V8, other ports (EFL, Clutter, Qt), and Blink. The talk will review the past/present/future of WebKit/Blink, their dynamics and development process, the relationship with the Linux ecosystem, and will give information about how to contribute to or use both projects.
Compiling and Optimizing Your Own Browser with WebKitSencha
Webkit is the layout engine behind Safari, Chrome and almost every mobile browser. But did you ever wonder how to build WebKit yourself? In this session, you'll learn the simple steps, along with never-seen-before techniques, on how to experiment with WebKit on your own. You'll learn how to find the root of various performance problems, automate a wide array of regression tests, and see how WebKit works to produce the render tree, resolve complex styling, execute scripts, and more.
A Browser for the Automotive: Introduction to WebKit for Wayland (Automotive ...Igalia
By Silvia Cho.
Given the popularity of HTML5 and web technologies, browsers have become an essential technology in almost all industries, including the automotive. Because of its complexity, it is very important to understand the pros and cons of the available choices before making a decision. This talk aims to explain and compare each of the available open source options.
WebKit is a web rendering engine with a generic part (WebCore, JSEngine), and ports for specific platforms that implement bits like rendering, networking or multimedia. GTK+, EFL and Wayland ports are available. Blink is fork of WebKit from which several projects have evolved such as Chromium, Crosswalk, and CEF. During the presentation, Silvia will explain and compare each them and provide more details of WebKit for Wayland which has several advantages for the IVI system.
Michael Westendorf presents FileMaker Security. With the recent security breaches at companies like Anthem, Target, and Morgan Stanley, it is important to stop and review security measures that we as FileMaker developers have at our disposal.
Learn about the following:
-Configuring your FileMaker file to prevent unwanted access
-FileMaker Server security best practices
-Scripting techniques for enhanced security
-Security industry trends
-FM injection on web forms
-Checklist to securing your application
The only certainty in JavaScript is change. There is a new, cool framework popping up seemingly every week. jQuery, Knockout, AngularJS: all were once the darlings of the web, now relegated to the scrapheap of legacy. One day you will abandon your current favourite framework too, as it slowly falls out of fashion. How then do you choose an appropriate JavaScript framework? How do you make sure that the next framework is the one? Better still, how can you work with your favourite framework today, while still working within your legacy application?
What if you don’t have to choose the right framework? What if legacy never got in your way? Join me as I show you how you can take lessons from MicroServices and use them to let you work with new, exciting frameworks even in applications based on older, legacy, technology (no microservices required)
Code: https://github.com/WilliamBZA/Microfrontends-demo/
Other code: https://github.com/WilliamBZA/microfrontends-cruises
TAGS in short is a generic framework which has been specifically designed to cater to needs of any TFT client who seeks a low cost end-to-end automation solution using open source tools.
SharePointFest 2013 Washington DC - SPT 103 - SharePoint 2013 Extranets: How ...Brian Culver
How will SharePoint 2013 allow organizations to collaborate and share knowledge with clients and partners? SharePoint empowers organization to build extranet sites and partner portals inexpensively and securely. Learn about the Product Catalog site template and how you can to use it. Learn about the new improvements in SharePoint 2013 regarding extranets. Learn how SharePoint 2013 can help your organization open its doors to its clients and partners securely.
The New Ignition v7.9 - See, Maintain, and Manage Your Enterprise With Ease Inductive Automation
Colby Clegg and Carl Gould, Co-Directors of Software Engineering, introduce the new Ignition v7.9. In this webinar, Colby and Carl discuss and demonstrate the new features of Ignition v7.9.
World's leading Cloud Computing platform, collection of remote computing services (Web Services) and it is powered byAmazon.com - world's leading Ecommerce Portal.
Migrating Enterprise Microservices From Cloud Foundry to KubernetesTony Erwin
Slides originally presented in Shanghai at KubeCon + CloudNativeCon China 2018. Content developed by Tony Erwin and Jonathan Schweikhart.
Abstract: Historically, the forty microservices making up the IBM Cloud UI have been deployed as apps on Cloud Foundry (CF), an open source PaaS. But, recently, this enterprise microservice system has been migrated to run on Kubernetes to take advantage of improved orchestration, higher availability, and better performance. Tony Erwin & Jonathan Schweikhart will discuss their journey and provide insights into the advantages of Kube over CF. Even more importantly, they will describe approaches to solving new problems that took the place of old ones, such as: 1) adapting PaaS apps to run as containers on Kube, 2) enabling geo load balancing between the different platforms (to vet Kube before entirely replacing CF), 3) integrating tools like Prometheus into existing monitoring systems, and more! Their team's experiences will help you avoid pitfalls as you look to perform your own migrations to Kube!
NOTE: CF is always evolving and the limitations on private networking and private host names mentioned in the slides are no longer current. If you have access to CF API 2.115.0 or higher (released on June 25, 2018), you can leverage CF's service discovery feature (see https://docs.cloudfoundry.org/devguide/deploy-apps/cf-networking.html#discovery ).
Another day, another silver bullet. The world of software development changes so rapidly, it is sometimes hard to keep track of all novelties and innovations available to us. To make things worse, with every new framework, there will be those that claim it to be the solution to all your problems.
Surely the use of frameworks is a good thing, right? Well, this talk will explore some arguments against that proposition. We will look at how the use of frameworks might impact the security of your system; what other downsides there are of using some frameworks and even how the reliance on frameworks could be impacting the ability of developers to understand what is going when things go wrong.
Apart from being cautionary, this talk will also show there is a large opportunity for learning in trying to understand frameworks. Being critical and curious will lead to greater understanding which leads to better choices.
Experience share of the journey, includes failures and methods and techniques used to overcome those troubles and failures.
Objective today is to managing your focus. Not to manage your time, but to manage yourself to get the best out of limited time we have under the workload.
This presentation contains mobile enablement is aspects of why, how would you approach mobile enablement and what tools and techniques you could use for it. Further, it emphasize the use of reading users without explicitly asking their feedback via survey forms and interviews. by using intelligence approaches.
How to prepare for future by connecting as much as dots you can in your life?
What does an internship means to you and to industry?
What industry expects from interns in their first tenure?
How to manage your time best to achieve more with your life?
Be the professional you aspire to be.
What is the difference between CV and Resume.
How to craft your resume.
Importance of LinkedIn and making LinkedIn your CV.
Slide credits: Isuru Senadheera, 99X Technology
The software solution implements a Railway Ticket Issuing System (RTIS) for the Sri Lanka Railways Department (SLRD). The solution allows to overcome the extreme human intervention to the current ticket issuance process. The proposed system will be an automated system so that SLRD will be able to manage their ticketing transaction efficiently.
Team Members:
Rashmika Nawaratne
Malinga Perera
Rumal Perera
Chaamini Mangaleswaran
Dilaj Perera
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
Elevating Tactical DDD Patterns Through Object CalisthenicsDorra BARTAGUIZ
After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more ‘mechanical’ approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!
8. Functional Requirements
• Basic User Interface Features
• Watch Audio, Video, Images and other non-HTML
features.
• Run JavaScript and CSS
• Tabbed Browsing
• Recover from Crashes
• Manage Downloads
11. Functional Requirements
• Basic User Interface Requirements
• Multiple Processes for same Application
• Inter Process Communication
• Secure/Safe Browsing
• Watch Audio, Video, Images and other non-HTML
features.
• Run JavaScript and CSS
• Recover from Crashes
• Manage Downloads
Firefox is a well known browser for using extensions. Since the last decade its a paradise for application developers. Chromium. This was initially the same as the Chrome but Google gave out the source code of chrome for developers and the name of the project was chromium. Then the developers added features and released updates under the name of chromium. Our objective is to compare the 2 browsers.
First we’ll look at a general browser and identify its characteristics. Basically browser is a app to retrieve present travers info/resources on www. Initially the user requests for a web resource using a URL. HTML is passed to the browser's layout engine to be transformed from markup to an interactive document. Other than documents most browsers can display images, audio, video, and XML files using technologies like xpath and xquery. Support Flash applications and Java applets.
User Interface: Navigation Buttons Refresh Button Stop Button Home Button Address Bar Integrated Search Bookmarking Tabbed Browsing Privacy and security Provide support for HTTPS Quick and easy ways to delete the web cache, cookies, and browsing history Extensibility Supports the development of browser extensions. Standard Support Ability to display images, audio, video, and XML files, and have extensions to support Flash applications and Java applets
To achieve the requirements of a web browser, Dr. Alan Grosskurth and Dr. Michael W. Godfrey from University of Waterloo have come up with a reference architecture for a general web browser. User Interface component Provides the methods with which a user interacts with the Browser Engine. The Browser Engine component Provides; Methods to initiate the loading of a URL Show error messages Rendering Engine component Visual representation of a given URL. Interprets the HTML, XML, and JavaScript and generates the layout that is displayed in the User Interface. Data Persistence component Manages user data such as bookmarks and preferences. Networking component Handle protocols as HTTP and FTP. Handles all aspects of Internet communication and security. Display Backend component It provides primitive drawing and windowing methods that are host operating system dependent.
We can see that Firefox architecture is largely same to the reference architecture .But there are two differences between them. 1. In the conceptual architecture user interface only builds on gecko. It is not connected to other subcomponents. In the reference architecture, the user interface connects to the Data Persistence component also. 2. In the reference architecture there are two layers for Browser engine and rendering engine. But in the conceptual they are integrated into Gecko. Gecko is an open source layout engine. Software used to implement the Firefox modules is mentioned in the figure. For ex. Expat for XML Parser, Spider monkey for java script interpreter etc.
Firefox user interface is built on XPTool kit. Three layers of the XPtool kit is shown in the figure. The Frames & Widgets layer directly defines the individual user interface components such as buttons, text fields etc. Services layer controls the services that can be executed through widgets (saving or printing document). Communication between Frames & Widgets layer, Services layer and Gecko happens through the Application Object Model.
Gecko is the heart and the brain of the Firefox. It takes in contents, such as HTML, XML, and many others, and outputs the parsed content onto the web browser display. It depends on every other sub-component except the User Interface. Gecko first receives document data from the networking subsystem Necko. HTML data is parsed by the Document Parser and sent to the Content Model along with any style data. The content model arranges the data into a DOM tree. The DOM tree, style data, and image data are combined into a frame tree by the Frame Constructor. Then it sends the data to the Graphics Interface to be displayed on the system.
As any other web browser firefox provides basic user interface Features. . Watch Audio, Video, Images and other non-HTML features Without plugging Firefox supports many media formats. Audio - WAVE, PCM, WebM, Vorbis, Ogg, Video -WebM, VP8, Vorbis, Ogg, Theora, Vorbis other - APNG (Animated PNG) images with alpha transparency It Run JavaScript and CSS It providesTabbed Browsing Recover from Crashe s Firefox will offer to restore session after a crash or other unexpected close. Session Store feature saves session data, including open windows and tabs,text typed in forms. Download manager Downloading files can be stopped and started at anytime with download manager. If the downloading file is big and connection is slow, downloading can be paused and started later.
Modifiability Firefox architecture consists of modules. They can be modified while the interfaces are kept unchanged. Security It uses SSL/TLS ( Secure Sockets Layer,Transport Layer Security )to protect communications with web servers using strong cryptography when using the HTTPS protocol. And Firefox integrates with Windows anti-virus software. Performance Performance of Firefox has been increased by rapid graphics rendering, improved page load speed and faster start-up time. Firefox uses single process model. Advantages It uses less system resources per tab compared to creating multiple Windows processes. Firefox can use fast in-process data access and synchronization objects when it interacts with the history, cookie and cache data stores. Disadvantages Lack of isolation means that if anything causes a page to crash, all Firefox tabs and windows lose. Reusability Firefox modules are open source and these modules are used in many applications. (E.g. Gecko is used in SeaMonkey ). Extendibility Extensions add new functionality to Firefox web browser. They can add anything from a toolbar button to a completely new feature. They allow the application to be customized to fit the personal needs of each user if they need additional features
The chromium’s architecture can be seen as a layered architecture as well as a multi process architecture. The layered architecture shown above is spitted into two parts, the browser process and the renderer process. As shown in the slide, the renderer process runs in a sandbox, a security feature which is implemented by Google. All the architectures do not have a sandbox, it could be disabled or enabled depending on the distributor ( since this is an open source project).
Multi processes for same application The chromium has 2 main processes, one for browser and other one for renderer. When there are multiple tabs, a renderer process created for each tab and a new process is created for each plug-in. Inter process communication Although the application has several processes, these processes communicate with each other. The main inter process communication primitive is the named pipe. In browser process, a separate I/O thread is used to communicate with renderer processes and renderer processes use separate thread for communicating with browser and WebKit. The so-called named pipes are used in asychronous mode ensuring neither ends are blocked wiating for each other. IPC allows processes to exchange information such as user information between tabs although they have their own separate tabs Secure and safe browsing Secure and safe browsing limits IPC with other processes. When secure browsing is enabled, data like user information are not exchanged with other tab processes and the websites visited are not saved in the history manager. Recover from crashes Suppose that the whole browser is a single process application. If that processes is crashed the whole browser will crash and will need to restart. As the chromium uses multi processes although one processes get crashed other processes will not crash and even if crashed by refreshing that tab, a new process can be created redirecting to the website it displayed previously
Security uses middleware like browser kernel which handles procedure calls to operating system. The rendering engine is bounded by a sandbox. So malicious code execution inside the sandbox cannot harm the rest of the browser. The plug-ins are not allowed to install in both rendering engine and kernel, when they are installed, they run in separate processes. The rendering engine receives the web URLs through the browser kernel so browser does not directly access the network. A compromised renderer cannot capture user’s keystrokes as each render process runs in separate windows “desktop” which is not visible to user. Performance chromium has a multi-process architecture, which means all the processes have their own memory address spaces and resource space, therefore avoiding shared memory and resources. Uses V8 JavaScript interpreter so browser is very fast relatively than others. As shown in the multiprocess architecture, the inter-process communication is reduced. So performance increases. Availability and robustness chromium architecture is built in such a way that the plug-ins run in separate processes, so plug-ins do not include in browser kernel or rendering engine processes. So if a plug-in crashes, it does not affect the whole browser. If plug-ins contained in two main processes and if plug-in crashed, there would be a great possibility that the whole browser get crashed. Since chromium has multi-process architecture, although one tab process got crashed, other tab processes do not get affected. Even when the crashed tab is refreshed a new process is created killing the crashed tab. Modifiability since the architecture of the chromium can be seen as a layered architecture, each layer can be modified easily with minimum changes to other layers(at most only adjacent 2 layers only). So a new browser can be derived from the existing architecture easily. Usability uppermost layer is the browser’s view layer. It provides an UI which is very easy to learn and use. User will not get lots of security prompts when interacting with the UI as lots of security issues are resolved using the sandbox. In process architecture, there is a separate process for handling I/O. so user will not feel degrade in performance will sending inputs to browser as they are handled separately by the I/O handing process. Extendibility Chromium is a open source project. Thus with the complete documents, this is expected to develop and extend much further. Also, chromium allows developers to build extensions/plugins and use them with the chromium browser.
1. Firefox has directly used the reference architecture of a web browser. Chrome has deviated from the usual model and developed their unique architecture. 2. Rendering has complete different architectures for above 2 systems. Firefox uses Gecko layout engine where as Chromium uses Webkit layout engine. Both are very fast and compatible with their own unique differences in HTML 5 and CSS 3 features. Webkit is more popular for mobile devices though. Therefore that's something to consider if you are a mobile user. Chromium uses multi process system. That is each web-page in chromium lives in its own process and so if something bad happens to it the entire browser can continue running. Firefox uses separate threads for each web-pages in the process so if one page crashes whole process will get crashed and you will lose all the tabs opened. 4. In the sense of Extension development Chromium is in further. Because it doesn’t need restart to have the effect of a modified extension where as firefox needs. But still firefox has the lead because before chromium came alive firefox was ruling the extension world.
In Firefox security is achieved through the Networking Subsystem. NSS: (Network Security Services), Set of libraries that supports secure client-server communication and application development. 2. PSM: (Personal Security Manager) is built on top of NSS . Set of libraries that perform crypto operations for the client-side application. – support SSL/TLS/Encryption/Signatures and Certification Mgt For Chromium, security is achieved through a reference monitor and a security policy. Treat the rendering engine as a black box. Reduce the complexity of browser’s kernel security monitor
As conclusion both architectures provide all the requirements in their own ways. According to our opinion, chromium’s architecture is more efficient for the basic non functional requirements such as Usability – elegant design Availability – process based tabs over thread based Security – reference monitor Extendibility – Efficient development environment for extensions Performance – As a user and from the statistics on the internet I can say that the responsiveness of chromium is rather high than FF
References: A Reference Architecture for Web Browsers Alan Grosskurth and Michael W. Godfrey School of Computer Science University of Waterloo http://dev.chromium.org/developers/design-documents http://en.wikipedia.org/wiki/Web_browser http://www.smooth-step.com/web-browsers/features http://web.uvic.ca/~hitchner/assign1.pdf http://www.soi.wide.ad.jp/class/20070050/slides/01/index_5.html