The document provides 8 rules for building a web application effectively on Google App Engine: 1) Design a simple data model, 2) Handle data model updates via a non-default version, 3) Use techniques like Appstats and caching to reduce costs, 4) Improve cold startup times by minimizing dependencies, 5) Prefer Google Guice as a dependency injection framework, 6) Use GWT for a desktop-like experience, 7) Adopt the GWT MVP pattern, and 8) Consider frameworks like Apache Wicket.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
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.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
Search and Society: Reimagining Information Access for Radical FuturesBhaskar Mitra
The field of Information retrieval (IR) is currently undergoing a transformative shift, at least partly due to the emerging applications of generative AI to information access. In this talk, we will deliberate on the sociotechnical implications of generative AI for information access. We will argue that there is both a critical necessity and an exciting opportunity for the IR community to re-center our research agendas on societal needs while dismantling the artificial separation between the work on fairness, accountability, transparency, and ethics in IR and the rest of IR research. Instead of adopting a reactionary strategy of trying to mitigate potential social harms from emerging technologies, the community should aim to proactively set the research agenda for the kinds of systems we should build inspired by diverse explicitly stated sociotechnical imaginaries. The sociotechnical imaginaries that underpin the design and development of information access technologies needs to be explicitly articulated, and we need to develop theories of change in context of these diverse perspectives. Our guiding future imaginaries must be informed by other academic fields, such as democratic theory and critical theory, and should be co-developed with social science scholars, legal scholars, civil rights and social justice activists, and artists, among others.
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
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
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
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 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
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
The Art of the Pitch: WordPress Relationships and Sales
Google website applications
1. 8 rules to build web app on
top of Google AppEngine
effectively
Lessons learned
www.comvai.com
2. Google App Engine
• Keep in mind Google AppEngine supports
subset of Java EE specifications. Check at
http://code.google.com/p/googleappengine/wiki/W
www.comvai.com
3. 1. Design Data model as simple as
possible
• The App Engine Datastore is not traditional relational SQL database and
there are several important differences.
• AppEngine datastore is schemaless. Entities of the same kind can have
different properties. The application itself is responsible for ensuring that
entities conform to it.
• If you want to migrate your existing data model to App Engine you will
probably need it to redesign.
• Data-model consistency will be split to the data-model and application.
• Check app engine datastore limitations to understand it. It gives you better
overview regarding your future data-model design.
http://code.google.com/appengine/articles/datastore/overview.html
www.comvai.com
4. How to
• Use recommended High Replication Datastore HRD.
• Use Objectify with JPA annotations over built-in JPA or JDO.
• Prefer to use unowned relationships between entities.
• Forget about count entities over filtered query result. Design your UI so
that count is not being required.
• If you need statistic calculations, do it on entity update.
• Note: Building data model on top of built-in either JPA or JDO doesn't
guarantee that application will be vendor independent because of different
behavior of AppEngine datastore in some cases. Even it doesn't mean that's
not possible to do so just requires understanding of AppEngine datastore
behavior.
www.comvai.com
5. 2. Handle your data model via non
default version of your GAE app
• The AppEngine allows you to deploy more than one non default version of
your application. Deploy specifically designed application to perform update
of your data model only as a non default version to be independent from
your main application release cycle.
www.comvai.com
6. 3. Price shields tips
• Use Appstats out of the box tool to detect datastore bottleneck. Just plug
in. It helps you to find the hidden unnecessary datastore operations that are
dragging you down.
• Use memcache. Datastore operations costs money and caching of "static"
data could save you from using unnecessary datastore operations.
• Use as many static files as possible. Static files are handled with high
performance static front-end servers (CDN) which are highly optimized for
this type of content.
• See more
http://www.gregtracy.com/revisiting-google-app-engines-pricing-changes
www.comvai.com
7. 4. Improve cold startup time
• AppEngine instances starts quite often thus cold startup time (known as
well as warmup request, loading request) is more important than in
traditional Java EE application. Good startup time improves user experience.
• Minimize number of your application java library dependencies as much as
possible. Make sure if all your libs are really needed. Otherwise it will slow
your cold startup time down.
• Don't use JSP if you are already using another Frontend framework
• Using JSPs will add additional libraries into your lib directory that are used
for processing of JSP.
http://www.listry.com/blog/2010/03/google-app-engine-cold-start-tip-dont
• Use Objectify over built-in JPA or JDO.
http://www.listry.com/blog/2010/03/google-app-engine-cold-start-guide-for
www.comvai.com
8. 5. Prefer Google Guice as DI framework
• It's simple, small in size and powerful library and you probably won't need
more.
www.comvai.com
9. 6. Use GWT for your desktop like web
app
• GWT together with GAE offers lot of built-in technics to improve your
web app performance. Built-in features coming as advice from the book
High Performance Web Sites.
• It's better to have only one framework for the UI even it means to build
some components yourself. Among other things it means less dependencies
and simplified upgrade process.
www.comvai.com
10. How to GWT
• Use built-in optimization technics with help of GWT's ClientBundles.
• ClientBundles and ImageResource makes using images more efficient.
• CssResource for CSS minification, CSS image strips and much more, see
docs for ClientBundles (DataResource, TextResource,
ExternalTextResource).
• Switch on minification and obfuscation of the Java-JavaScript compiler.
www.comvai.com
11. How to GAE
• Content Delivery Network CDN
• Gzip compression
• Memcache
www.comvai.com
12. 7. Use GWT MVP pattern
• It's not easy to work with but worth of time. GWT has built-in support for
MVP pattern.
www.comvai.com
13. Benefits
• Well suited for large scale application.
• Separation of functionality into components. Helps simplify UI unit testing.
• Built-in browser history management. MVP is not concerned with browser
history management, but Activities and Places may be used very well with
MVP development.
• Built-in event bus as a central point for app events.
• Caching all of your code books via GWT event bus as a central pipe to go
to the backend.
www.comvai.com
14. 8. Use Apache Wicket for website
• The component based web framework. Version 1.5 or higher optimized for
Google AppEngine
• In Java ecosystem there is a lot of front-end frameworks thus to choose the
right one depends on many varying factors. We like Apache Wicket because
it's Java, feature rich component-oriented framework with good API. As
version 1.5 it very well operates on App Engine. So it's up to you and your
requirements but ones Apache Wicket is good fit for you we recommend it.
• Add wicketstuff-gae-initializer dependency along side with wicket core
dependencies
• Alternative Play framework as it has specific module for App Engine.
www.comvai.com
15. • Visit http://www.comvai.com/google-app-engine-development and register
yourself to get development of your Google AppEngine project's Proof of
Concept for free.
• Validate suitability of your project to be built on top of Google App Engine.
www.comvai.com