Best painkiller for Java headache
•
0 likes•201 views
This document discusses pain relief for headaches caused by Java development and recommends learning the newer Kotlin programming language. It lists some positives of Java but also negatives. It then introduces Kotlin as a relatively new option and provides a link to learn it through exercises in a fun way. The document is written by Nikola Lucic, a software engineer recommending an alternative language to remedy Java headaches.
Report
Share
Report
Share
Download to read offline
Recommended
The hitchhiker’s guide to Prometheus
This document provides an introduction and overview of Prometheus for monitoring systems. It begins with an introduction to Prometheus and its core concepts including different metric types. It then demonstrates how to expose application metrics via HTTP endpoints and how Prometheus scrapes these endpoints. The document shows how to query metrics using PromQL and create visualizations and alerts in Grafana. It also discusses exporters for additional sources of metrics and tips for best practices in metric naming. Finally, it concludes with a brief demo of setting up Prometheus monitoring.
Test long and prosper
Speaker: Cas Plattel
Genre & level: Frontend, Backend, Medior
Ever found cucumber tests requiring too much boilerplate and JUnit tests a bit too low level? Spock is a testing and specification framework for applications. It has an expressive syntax to write your tests in and can be used to unit test, integration test or even test your frontend using an additional layer called Geb.
We’ve been using both JUnit for unit testing and Cucumber for component and integration testing but both didn’t really satisfy our wishes. Spock seems to be the positioning itself in the middle ground where we can both write simple unit tests and still describe high-level behavioral flows.
This talk will elaborate on the Spock framework, some pro and cons. Spock is not a silver bullet but did turn out to help us due to, for instance, less false positive failing tests and a lot less boilerplate. The presentation will contain a short demo showing test runs.
The Reactive Rollercoaster
Speaker: Wyko Rijnsburger
Genre & level: Backend, Medior
Reactive programming: everybody seems to be talking about it, but there has been little real-world utilization. This is a shame, since a reactive approach can significantly improve both the quality of your codebase and the performance of your application.
At Team 52, we started building a back end for our mobile apps using a reactive architecture about 1.5 years ago. Along the way, we discovered how beautiful Reactive applications can be, but also how small mistakes can lead to huge issues in a way that is not the case with traditional applications. In this talk, I will guide you through the often-messy but ultimately successful process of developing these applications. I will discuss how the Reactive approach changed the way we write code, how we used it to optimize concurrency and performance, but also how it leads to some embarrassing bugs. Finally, I will show you how you can start building a stable, high performing reactive application right now.
Organizing a conference in 80 days
Speaker: Mary Gouseti
Genre & level: Way of working, Junior
Do you also have an insatiable hunger to attend conferences? It’s the best place to meet people, exchange ideas, get inspired! There are conferences for everyone and any topic. Let me take you on an amazing trip, organizing a conference in 80, ok let’s make it 90, days! People travelled around the world in less time, it should be possible. Would you be up for the challenge?
Three steps to untangle data traffic jams
The document provides three steps to optimize database queries that are running slowly:
1. Know your data structure and how it will be queried
2. Understand your different use cases and filter/structure data accordingly
3. Use the EXPLAIN command and indexes to tune queries by reducing joins, sorting data optimally, and limiting the number of queries
Understanding Operating Systems by breaking them
Speaker: Lex van Roon
Genre & level: Backend, Medior
Digital archaeology is fun! Especially if you can do it from the comfort of your laptop and without the prohibitive costs of the original hardware. Using emulators, you are able to learn about techniques and methodologies that you will likely never run into anymore in your day job, which can give you a new perspective on modern day IT technology. Ancient OS’s are much simpler then modern-day OS’s, which gives you the possibility to learn how OS’s work conceptually. You will also learn how to perform troubleshooting using only the basic system utilities. Various techniques to build your own emulator will be discussed and to top it off, I will distribute pre-built images for various OS’s which you can run on your laptop.
How to train your dragon
Speaker: Paul-Luuk Profijt
Genre & level: Backend, Junior
Why grow your own dragon, when you can just capture one from the wild and train it to do what you want? Let’s train a dragon to kill orcs instead of humans. In this live demo, I will show you how easy AI can be.
The hitchhiker’s guide to Prometheus
Speaker: Remco Overdijk
Genre & level: Backend, Way of working, Medior
Familiar tools like Statsd, Graphite, Nagios, etc. are no longer used in the Cloud, meaning we’ve hitched a new ride: Prometheus, and it’s all about Metrics! “A Metric, The Hitchhiker’s Guide to Prometheus says, is about the most massively useful thing someone doing Monitoring can have. It has great practical value. You can wave your Metric in emergencies as a distress signal, and produce pretty Graphs at the same time.” Don’t Panic, this talk is not about deploying Prometheus, Kubernetes or Vogon Poetry, but all about YOU!
How exactly would that work, using metrics for monitoring purposes? Is it really that different from having separate stacks? Can I export 42 as a Metric? How do I migrate from Statsd/Nagios to this new world? What do I do when metrics seem to be insufficient to monitor something? Like a Babel Fish, this talk translates your questions into hands-on tips and tricks on working with Prometheus. Not only for the cloud, but all applications/services in general.
Recommended
The hitchhiker’s guide to Prometheus
This document provides an introduction and overview of Prometheus for monitoring systems. It begins with an introduction to Prometheus and its core concepts including different metric types. It then demonstrates how to expose application metrics via HTTP endpoints and how Prometheus scrapes these endpoints. The document shows how to query metrics using PromQL and create visualizations and alerts in Grafana. It also discusses exporters for additional sources of metrics and tips for best practices in metric naming. Finally, it concludes with a brief demo of setting up Prometheus monitoring.
Test long and prosper
Speaker: Cas Plattel
Genre & level: Frontend, Backend, Medior
Ever found cucumber tests requiring too much boilerplate and JUnit tests a bit too low level? Spock is a testing and specification framework for applications. It has an expressive syntax to write your tests in and can be used to unit test, integration test or even test your frontend using an additional layer called Geb.
We’ve been using both JUnit for unit testing and Cucumber for component and integration testing but both didn’t really satisfy our wishes. Spock seems to be the positioning itself in the middle ground where we can both write simple unit tests and still describe high-level behavioral flows.
This talk will elaborate on the Spock framework, some pro and cons. Spock is not a silver bullet but did turn out to help us due to, for instance, less false positive failing tests and a lot less boilerplate. The presentation will contain a short demo showing test runs.
The Reactive Rollercoaster
Speaker: Wyko Rijnsburger
Genre & level: Backend, Medior
Reactive programming: everybody seems to be talking about it, but there has been little real-world utilization. This is a shame, since a reactive approach can significantly improve both the quality of your codebase and the performance of your application.
At Team 52, we started building a back end for our mobile apps using a reactive architecture about 1.5 years ago. Along the way, we discovered how beautiful Reactive applications can be, but also how small mistakes can lead to huge issues in a way that is not the case with traditional applications. In this talk, I will guide you through the often-messy but ultimately successful process of developing these applications. I will discuss how the Reactive approach changed the way we write code, how we used it to optimize concurrency and performance, but also how it leads to some embarrassing bugs. Finally, I will show you how you can start building a stable, high performing reactive application right now.
Organizing a conference in 80 days
Speaker: Mary Gouseti
Genre & level: Way of working, Junior
Do you also have an insatiable hunger to attend conferences? It’s the best place to meet people, exchange ideas, get inspired! There are conferences for everyone and any topic. Let me take you on an amazing trip, organizing a conference in 80, ok let’s make it 90, days! People travelled around the world in less time, it should be possible. Would you be up for the challenge?
Three steps to untangle data traffic jams
The document provides three steps to optimize database queries that are running slowly:
1. Know your data structure and how it will be queried
2. Understand your different use cases and filter/structure data accordingly
3. Use the EXPLAIN command and indexes to tune queries by reducing joins, sorting data optimally, and limiting the number of queries
Understanding Operating Systems by breaking them
Speaker: Lex van Roon
Genre & level: Backend, Medior
Digital archaeology is fun! Especially if you can do it from the comfort of your laptop and without the prohibitive costs of the original hardware. Using emulators, you are able to learn about techniques and methodologies that you will likely never run into anymore in your day job, which can give you a new perspective on modern day IT technology. Ancient OS’s are much simpler then modern-day OS’s, which gives you the possibility to learn how OS’s work conceptually. You will also learn how to perform troubleshooting using only the basic system utilities. Various techniques to build your own emulator will be discussed and to top it off, I will distribute pre-built images for various OS’s which you can run on your laptop.
How to train your dragon
Speaker: Paul-Luuk Profijt
Genre & level: Backend, Junior
Why grow your own dragon, when you can just capture one from the wild and train it to do what you want? Let’s train a dragon to kill orcs instead of humans. In this live demo, I will show you how easy AI can be.
The hitchhiker’s guide to Prometheus
Speaker: Remco Overdijk
Genre & level: Backend, Way of working, Medior
Familiar tools like Statsd, Graphite, Nagios, etc. are no longer used in the Cloud, meaning we’ve hitched a new ride: Prometheus, and it’s all about Metrics! “A Metric, The Hitchhiker’s Guide to Prometheus says, is about the most massively useful thing someone doing Monitoring can have. It has great practical value. You can wave your Metric in emergencies as a distress signal, and produce pretty Graphs at the same time.” Don’t Panic, this talk is not about deploying Prometheus, Kubernetes or Vogon Poetry, but all about YOU!
How exactly would that work, using metrics for monitoring purposes? Is it really that different from having separate stacks? Can I export 42 as a Metric? How do I migrate from Statsd/Nagios to this new world? What do I do when metrics seem to be insufficient to monitor something? Like a Babel Fish, this talk translates your questions into hands-on tips and tricks on working with Prometheus. Not only for the cloud, but all applications/services in general.
Software for drafting a cold beer
Speaker: Mattijs Meiboom
Genre & level: Backend, Junior
My local sports club gave me my all-time favorite pet project. Soccer, beer and code … what more could I ask for? I’ll explain how I reverse engineered the communications protocol of a smart draft system and replaced the software, touching on subjects such as beer tap security, draft concurrency and integrating with Google Cloud Messaging. The most ridiculously over-engineered piece of software for drafting a cold beer.
Going to the cloud: Forget EVERYTHING you know!
Speaker: Maarten Dirkse
Genre & level: Way of working, Medior
Can you handle the cloud the same way as you would handle our on-premise datacenter? The biggest issue is the mindset when using the cloud. This is completely different from the one you need when you’re ‘on the moon’ in our datacenter! Not only for developers, but even more so for classic operations-people. Let me make your road to the cloud less bumpy!
How to create your presentation in an iterative way
Speaker: Evelyn Grooten
Genre & level: Way of working, Junior
Have you ever lost yourself in making a PowerPoint presentation pixel perfect, only to find out that what you just spent two hours on, is cut out of the final presentation because the story was not quite right yet? Even when you work in IT, sometimes you need to get a story across, and convince people. I will walk you through the way I built my presentation using (paper) prototype, getting feedback early and spending time on the must haves before embellishments.
Wax on, wax off
Speaker: Carla de Groot
Genre & level: Backend, Medior
Are you looking for the best framework fit for API testing? Look no further. I already did this for you. As your sensei, I’ll give you a solid base for your first kata in Karate so you can further master the art of API testing.
Jupyter and Pandas to the rescue!
Speaker: Andrii Zablodskyi
Genre & level: Backend, Medior
Ever needed to gain insights from a running system or a systems set to fix an issue? Well fear no more! Because Jupyter, Pandas library and friends can give you insight on data taken from almost any source. And the best of it all: no need to bootstrap a new service or to deploy.
How the best of Design and Development come together
Speaker: Jorien Brangert
Genre & level: Way of working, Medior
Ever been assigned to a business feature that was completely designed and thought out beforehand, without your involvement, and you didn’t completely agree? What if you could be part of the idea for a new business feature from the start? From idea to production, including the design process! At Shopping Innovation & UX Design we’re doing just that! Found out how.
The addition to your team you never knew you needed
Speakers: Jason Compier & Paul van der Bles
Genre & level: Frontend, Backend, Way of working, Junior
Imagine this: a motivated team member who is eager to execute the grand ideas you don’t have enough time for. This dream is well within reach. Introducing: the IT intern. You bring the ideas for side projects, college students need a purpose for their internship, have the time and motivation to work on these projects. It’s a perfect match!
Gravitational waves: A new era in astronomy
Gravitational waves are disturbances in spacetime generated by accelerated masses that propagate outward from their source at the speed of light. Measuring gravitational waves provides a new way to observe the universe, as gravitational waves can travel to us from regions of spacetime that light cannot reach. The first direct detection of gravitational waves in 2015 using the LIGO detectors confirmed predictions of Einstein's theory of general relativity and detected the merger of two black holes over 1 billion light years away.
Consumer Driven Contract Testing
Speakers: Nithya & Stephan
Genre & level: Backend, Way of working, Medior
Are you running into interface problems in our increasingly microservices based landscape? Is updating your APIs a hassle? Are your consumers breaking because of your API changes? Let me introduce contract testing as a part of the solution for these problems. Contract testing is a relatively new kid on the testing block. In which we let consumers define contracts for our services so that we can confidently change our APIS when we want to, and if we introduce a breaking change we will know who is affected. This talk will focus on the practical implementation of contract testing. We will write some code examples in both Pact and Spring Cloud Contract so you can make an informed choice about which framework you want to use if you decide to implement contract testing.
I want to go fast! - Exposing performance bottlenecks
1. A webshop was experiencing slow product pages and loggers deadlocking. Observations found high response times and warnings about increased GC usage, memory, and thread counts.
2. An initial hypothesis was formed that new functionality going live, including for products, and Oracle patches caused the product catalog to respond slowly to calls, triggering a circuit breaker that returned nulls and caused logging failures.
3. Experiments found that Oracle queries had slowed down with an update, causing extra queries to execute on the same thread and slowing the system, triggering the circuit breaker, log failures, and locks. Wrapping up, the focus should be on structuring diagnosis, formulating hypotheses, and iterating experiments.
Kubernetes: love at first sight?
Speakers: Joost & Milo (Albert Heijn)
Genre & level: Backend, Junior
Joost and Milo from Albert Heijn join us to talk about how they implemented Kubernetes.
Blockchain: the magical database in the cloud?
Speaker: Andrey Krichevskiy
Genre & level: Backend, Junior
2018 can perhaps be called the year of Bitcoin. But while most people have heard of Bitcoin and blockchain, few fully grasp the technology behind it. Spoiler: blockchain is NOT a magical database in the cloud, but can perhaps be considered one of the slowest distributed databases known to man. But if blockchain is the slowest distributed database known to man, why are people using it? This talk will explore the benefits and true costs of blockchain technology. You will learn why blockchain is not as flawless as we’ve been led to believe, but how the transparency that comes with it has unlocked a whole new set of possibilities. If you’d like to be inspired by possible use cases in our own landscape, then this is the talk for you!
Billie, grow up!
Speaker: Daniël Heres
Genre & level: Backend, Way of working, Medior
Currently, chatbots are stupid; they only get what you want when you ask them in the exact way the system understands. At bol.com, we are improving our chatbot using Machine Learning and AI. To give users better answers more quickly, in addition to analyzing sentences from users, we also use information about the current situation of a customer, such as information about recent orders, returned items and status of package transport. Using this context to predict what the customer wants leads not only to improvements in our chatbot, but can also be used to proactively give customers and customer service agents information they need.
We can make much better decisions by learning from our data instead of hardcoded rules, so we have lots of plans to be smarter in the future. Through machine learning, we give customers better service, detect and prevent problems in the shopping and ordering process, and help agents solve problems. It’s a win-win-win! This talk will inspire you to make the most of your own data and provide an approach for using that data to improve your services and decision-making.
Automating security check - Milic Vuletic
Check out how one tool can help find bugs in our security checks.
This presentation was given during the the Spaces Summit, an internal IT conference by and for the engineers of bol.com.
Making Postgres great again - Colette Biervliet-Schranz
While Elasticsearch can be an attractive solution for search/filtering/sorting needs, we found the maintenance costs outweighed the benefits. That’s why we opted for a Postgres solution. In this talk, I will outline our situation and business requirements, briefly explore our decision-making process and elaborate on how we determined a Postgres solution would adequately serve our needs without creating unnecessary costs.
This presentation was given during the the Spaces Summit, an internal IT conference by and for the engineers of bol.com.
Splitting FIT: what to do when your service is overweight - Bart Enkelaar
The document discusses splitting a monolithic service called FIT into multiple smaller services due to it becoming overweight. It describes how FIT handled forecasting and inventory management for multiple business domains. The diagnosis concluded FIT should be split based on code cohesion, business domains, stakeholders, and requirements. The original plan was to split forecasting and inventory management but the plan evolved over time as smaller steps were taken. Now several services have been split off while others like retailer stock are still being defined. Lessons learned include that working with many stakeholders indicates a split is needed, to have a vision and flexible plan, and that incremental changes are better than just moving code.
Reactive streams and why it matters - Andrei Krichevskiy
This document discusses how to handle situations where an upstream system produces data or requests faster than a downstream system can process them. It notes that this can lead to errors like HTTP 503 errors. It recommends using back-pressure techniques where the downstream system signals to the upstream one to slow production when it reaches capacity. It lists several frameworks like Akka Streams, Vert.x and RxJava that support implementing back-pressure.
No developer left behind - Jonathan Lukkien
A developer’s perspective on infrastructure and how it all works together. Come check out our Jip and Janneke guide to EoD’ing.
This presentation was given during the the Spaces Summit, an internal IT conference by and for the engineers of bol.com.
Insights: the definitive talk - William Leese
Creating great software just doesn’t cut it anymore. Nowadays you’re responsible for running it. When things go wrong, you’re the one pouring through all the data to find the fault. In this talk, we’ll take a step back, look at all these silos of data and gain an understanding of why it all came to be. We’ll advise on how to use these systems to understand what’s going on in production.
This presentation was given during the the Spaces Summit, an internal IT conference by and for the engineers of bol.com.
Building a Boomerang that doesn’t come back (to haunt you) - Mattijs Meiboom
Project Boomerang aims to fundamentally transform the bol.com returns process. I’ll share the underlying architectural structure, explain how the code matches the structure and how we’ve applied test autonomy concepts within this architecture. Spoiler alert: it turns out they fit together surprisingly well. Ultimately, I want to convince you of the value of having a clear idea on how to structure your service.
This presentation was given during the the Spaces Summit, an internal IT conference by and for the engineers of bol.com.
Essentials of Automations: The Art of Triggers and Actions in FME
In this second installment of our Essentials of Automations webinar series, we’ll explore the landscape of triggers and actions, guiding you through the nuances of authoring and adapting workspaces for seamless automations. Gain an understanding of the full spectrum of triggers and actions available in FME, empowering you to enhance your workspaces for efficient automation.
We’ll kick things off by showcasing the most commonly used event-based triggers, introducing you to various automation workflows like manual triggers, schedules, directory watchers, and more. Plus, see how these elements play out in real scenarios.
Whether you’re tweaking your current setup or building from the ground up, this session will arm you with the tools and insights needed to transform your FME usage into a powerhouse of productivity. Join us to discover effective strategies that simplify complex processes, enhancing your productivity and transforming your data management practices with FME. Let’s turn complexity into clarity and make your workspaces work wonders!
More Related Content
More from Bol.com Techlab
Software for drafting a cold beer
Speaker: Mattijs Meiboom
Genre & level: Backend, Junior
My local sports club gave me my all-time favorite pet project. Soccer, beer and code … what more could I ask for? I’ll explain how I reverse engineered the communications protocol of a smart draft system and replaced the software, touching on subjects such as beer tap security, draft concurrency and integrating with Google Cloud Messaging. The most ridiculously over-engineered piece of software for drafting a cold beer.
Going to the cloud: Forget EVERYTHING you know!
Speaker: Maarten Dirkse
Genre & level: Way of working, Medior
Can you handle the cloud the same way as you would handle our on-premise datacenter? The biggest issue is the mindset when using the cloud. This is completely different from the one you need when you’re ‘on the moon’ in our datacenter! Not only for developers, but even more so for classic operations-people. Let me make your road to the cloud less bumpy!
How to create your presentation in an iterative way
Speaker: Evelyn Grooten
Genre & level: Way of working, Junior
Have you ever lost yourself in making a PowerPoint presentation pixel perfect, only to find out that what you just spent two hours on, is cut out of the final presentation because the story was not quite right yet? Even when you work in IT, sometimes you need to get a story across, and convince people. I will walk you through the way I built my presentation using (paper) prototype, getting feedback early and spending time on the must haves before embellishments.
Wax on, wax off
Speaker: Carla de Groot
Genre & level: Backend, Medior
Are you looking for the best framework fit for API testing? Look no further. I already did this for you. As your sensei, I’ll give you a solid base for your first kata in Karate so you can further master the art of API testing.
Jupyter and Pandas to the rescue!
Speaker: Andrii Zablodskyi
Genre & level: Backend, Medior
Ever needed to gain insights from a running system or a systems set to fix an issue? Well fear no more! Because Jupyter, Pandas library and friends can give you insight on data taken from almost any source. And the best of it all: no need to bootstrap a new service or to deploy.
How the best of Design and Development come together
Speaker: Jorien Brangert
Genre & level: Way of working, Medior
Ever been assigned to a business feature that was completely designed and thought out beforehand, without your involvement, and you didn’t completely agree? What if you could be part of the idea for a new business feature from the start? From idea to production, including the design process! At Shopping Innovation & UX Design we’re doing just that! Found out how.
The addition to your team you never knew you needed
Speakers: Jason Compier & Paul van der Bles
Genre & level: Frontend, Backend, Way of working, Junior
Imagine this: a motivated team member who is eager to execute the grand ideas you don’t have enough time for. This dream is well within reach. Introducing: the IT intern. You bring the ideas for side projects, college students need a purpose for their internship, have the time and motivation to work on these projects. It’s a perfect match!
Gravitational waves: A new era in astronomy
Gravitational waves are disturbances in spacetime generated by accelerated masses that propagate outward from their source at the speed of light. Measuring gravitational waves provides a new way to observe the universe, as gravitational waves can travel to us from regions of spacetime that light cannot reach. The first direct detection of gravitational waves in 2015 using the LIGO detectors confirmed predictions of Einstein's theory of general relativity and detected the merger of two black holes over 1 billion light years away.
Consumer Driven Contract Testing
Speakers: Nithya & Stephan
Genre & level: Backend, Way of working, Medior
Are you running into interface problems in our increasingly microservices based landscape? Is updating your APIs a hassle? Are your consumers breaking because of your API changes? Let me introduce contract testing as a part of the solution for these problems. Contract testing is a relatively new kid on the testing block. In which we let consumers define contracts for our services so that we can confidently change our APIS when we want to, and if we introduce a breaking change we will know who is affected. This talk will focus on the practical implementation of contract testing. We will write some code examples in both Pact and Spring Cloud Contract so you can make an informed choice about which framework you want to use if you decide to implement contract testing.
I want to go fast! - Exposing performance bottlenecks
1. A webshop was experiencing slow product pages and loggers deadlocking. Observations found high response times and warnings about increased GC usage, memory, and thread counts.
2. An initial hypothesis was formed that new functionality going live, including for products, and Oracle patches caused the product catalog to respond slowly to calls, triggering a circuit breaker that returned nulls and caused logging failures.
3. Experiments found that Oracle queries had slowed down with an update, causing extra queries to execute on the same thread and slowing the system, triggering the circuit breaker, log failures, and locks. Wrapping up, the focus should be on structuring diagnosis, formulating hypotheses, and iterating experiments.
Kubernetes: love at first sight?
Speakers: Joost & Milo (Albert Heijn)
Genre & level: Backend, Junior
Joost and Milo from Albert Heijn join us to talk about how they implemented Kubernetes.
Blockchain: the magical database in the cloud?
Speaker: Andrey Krichevskiy
Genre & level: Backend, Junior
2018 can perhaps be called the year of Bitcoin. But while most people have heard of Bitcoin and blockchain, few fully grasp the technology behind it. Spoiler: blockchain is NOT a magical database in the cloud, but can perhaps be considered one of the slowest distributed databases known to man. But if blockchain is the slowest distributed database known to man, why are people using it? This talk will explore the benefits and true costs of blockchain technology. You will learn why blockchain is not as flawless as we’ve been led to believe, but how the transparency that comes with it has unlocked a whole new set of possibilities. If you’d like to be inspired by possible use cases in our own landscape, then this is the talk for you!
Billie, grow up!
Speaker: Daniël Heres
Genre & level: Backend, Way of working, Medior
Currently, chatbots are stupid; they only get what you want when you ask them in the exact way the system understands. At bol.com, we are improving our chatbot using Machine Learning and AI. To give users better answers more quickly, in addition to analyzing sentences from users, we also use information about the current situation of a customer, such as information about recent orders, returned items and status of package transport. Using this context to predict what the customer wants leads not only to improvements in our chatbot, but can also be used to proactively give customers and customer service agents information they need.
We can make much better decisions by learning from our data instead of hardcoded rules, so we have lots of plans to be smarter in the future. Through machine learning, we give customers better service, detect and prevent problems in the shopping and ordering process, and help agents solve problems. It’s a win-win-win! This talk will inspire you to make the most of your own data and provide an approach for using that data to improve your services and decision-making.
Automating security check - Milic Vuletic
Check out how one tool can help find bugs in our security checks.
This presentation was given during the the Spaces Summit, an internal IT conference by and for the engineers of bol.com.
Making Postgres great again - Colette Biervliet-Schranz
While Elasticsearch can be an attractive solution for search/filtering/sorting needs, we found the maintenance costs outweighed the benefits. That’s why we opted for a Postgres solution. In this talk, I will outline our situation and business requirements, briefly explore our decision-making process and elaborate on how we determined a Postgres solution would adequately serve our needs without creating unnecessary costs.
This presentation was given during the the Spaces Summit, an internal IT conference by and for the engineers of bol.com.
Splitting FIT: what to do when your service is overweight - Bart Enkelaar
The document discusses splitting a monolithic service called FIT into multiple smaller services due to it becoming overweight. It describes how FIT handled forecasting and inventory management for multiple business domains. The diagnosis concluded FIT should be split based on code cohesion, business domains, stakeholders, and requirements. The original plan was to split forecasting and inventory management but the plan evolved over time as smaller steps were taken. Now several services have been split off while others like retailer stock are still being defined. Lessons learned include that working with many stakeholders indicates a split is needed, to have a vision and flexible plan, and that incremental changes are better than just moving code.
Reactive streams and why it matters - Andrei Krichevskiy
This document discusses how to handle situations where an upstream system produces data or requests faster than a downstream system can process them. It notes that this can lead to errors like HTTP 503 errors. It recommends using back-pressure techniques where the downstream system signals to the upstream one to slow production when it reaches capacity. It lists several frameworks like Akka Streams, Vert.x and RxJava that support implementing back-pressure.
No developer left behind - Jonathan Lukkien
A developer’s perspective on infrastructure and how it all works together. Come check out our Jip and Janneke guide to EoD’ing.
This presentation was given during the the Spaces Summit, an internal IT conference by and for the engineers of bol.com.
Insights: the definitive talk - William Leese
Creating great software just doesn’t cut it anymore. Nowadays you’re responsible for running it. When things go wrong, you’re the one pouring through all the data to find the fault. In this talk, we’ll take a step back, look at all these silos of data and gain an understanding of why it all came to be. We’ll advise on how to use these systems to understand what’s going on in production.
This presentation was given during the the Spaces Summit, an internal IT conference by and for the engineers of bol.com.
Building a Boomerang that doesn’t come back (to haunt you) - Mattijs Meiboom
Project Boomerang aims to fundamentally transform the bol.com returns process. I’ll share the underlying architectural structure, explain how the code matches the structure and how we’ve applied test autonomy concepts within this architecture. Spoiler alert: it turns out they fit together surprisingly well. Ultimately, I want to convince you of the value of having a clear idea on how to structure your service.
This presentation was given during the the Spaces Summit, an internal IT conference by and for the engineers of bol.com.
More from Bol.com Techlab (20)
How to create your presentation in an iterative way
How to create your presentation in an iterative way
How the best of Design and Development come together
How the best of Design and Development come together
The addition to your team you never knew you needed
The addition to your team you never knew you needed
I want to go fast! - Exposing performance bottlenecks
I want to go fast! - Exposing performance bottlenecks
Making Postgres great again - Colette Biervliet-Schranz
Making Postgres great again - Colette Biervliet-Schranz
Splitting FIT: what to do when your service is overweight - Bart Enkelaar
Splitting FIT: what to do when your service is overweight - Bart Enkelaar
Reactive streams and why it matters - Andrei Krichevskiy
Reactive streams and why it matters - Andrei Krichevskiy
Building a Boomerang that doesn’t come back (to haunt you) - Mattijs Meiboom
Building a Boomerang that doesn’t come back (to haunt you) - Mattijs Meiboom
Recently uploaded
Essentials of Automations: The Art of Triggers and Actions in FME
In this second installment of our Essentials of Automations webinar series, we’ll explore the landscape of triggers and actions, guiding you through the nuances of authoring and adapting workspaces for seamless automations. Gain an understanding of the full spectrum of triggers and actions available in FME, empowering you to enhance your workspaces for efficient automation.
We’ll kick things off by showcasing the most commonly used event-based triggers, introducing you to various automation workflows like manual triggers, schedules, directory watchers, and more. Plus, see how these elements play out in real scenarios.
Whether you’re tweaking your current setup or building from the ground up, this session will arm you with the tools and insights needed to transform your FME usage into a powerhouse of productivity. Join us to discover effective strategies that simplify complex processes, enhancing your productivity and transforming your data management practices with FME. Let’s turn complexity into clarity and make your workspaces work wonders!
UiPath Test Automation using UiPath Test Suite series, part 6
Welcome to UiPath Test Automation using UiPath Test Suite series part 6. In this session, we will cover Test Automation with generative AI and Open AI.
UiPath Test Automation with generative AI and Open AI webinar offers an in-depth exploration of leveraging cutting-edge technologies for test automation within the UiPath platform. Attendees will delve into the integration of generative AI, a test automation solution, with Open AI advanced natural language processing capabilities.
Throughout the session, participants will discover how this synergy empowers testers to automate repetitive tasks, enhance testing accuracy, and expedite the software testing life cycle. Topics covered include the seamless integration process, practical use cases, and the benefits of harnessing AI-driven automation for UiPath testing initiatives. By attending this webinar, testers, and automation professionals can gain valuable insights into harnessing the power of AI to optimize their test automation workflows within the UiPath ecosystem, ultimately driving efficiency and quality in software development processes.
What will you get from this session?
1. Insights into integrating generative AI.
2. Understanding how this integration enhances test automation within the UiPath platform
3. Practical demonstrations
4. Exploration of real-world use cases illustrating the benefits of AI-driven test automation for UiPath
Topics covered:
What is generative AI
Test Automation with generative AI and Open AI.
UiPath integration with generative AI
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Climate Impact of Software Testing at Nordic Testing Days
My slides at Nordic Testing Days 6.6.2024
Climate impact / sustainability of software testing discussed on the talk. ICT and testing must carry their part of global responsibility to help with the climat warming. We can minimize the carbon footprint but we can also have a carbon handprint, a positive impact on the climate. Quality characteristics can be added with sustainability, and then measured continuously. Test environments can be used less, and in smaller scale and on demand. Test techniques can be used in optimizing or minimizing number of tests. Test automation can be used to speed up testing.
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024
Neha Bajwa, Vice President of Product Marketing, Neo4j
Join us as we explore breakthrough innovations enabled by interconnected data and AI. Discover firsthand how organizations use relationships in data to uncover contextual insights and solve our most pressing challenges – from optimizing supply chains, detecting fraud, and improving customer experiences to accelerating drug discoveries.
20240609 QFM020 Irresponsible AI Reading List May 2024
Everything I found interesting about the irresponsible use of machine intelligence in May 2024
“Building and Scaling AI Applications with the Nx AI Manager,” a Presentation...
“Building and Scaling AI Applications with the Nx AI Manager,” a Presentation...Edge AI and Vision Alliance
For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/building-and-scaling-ai-applications-with-the-nx-ai-manager-a-presentation-from-network-optix/
Robin van Emden, Senior Director of Data Science at Network Optix, presents the “Building and Scaling AI Applications with the Nx AI Manager,” tutorial at the May 2024 Embedded Vision Summit.
In this presentation, van Emden covers the basics of scaling edge AI solutions using the Nx tool kit. He emphasizes the process of developing AI models and deploying them globally. He also showcases the conversion of AI models and the creation of effective edge AI pipelines, with a focus on pre-processing, model conversion, selecting the appropriate inference engine for the target hardware and post-processing.
van Emden shows how Nx can simplify the developer’s life and facilitate a rapid transition from concept to production-ready applications.He provides valuable insights into developing scalable and efficient edge AI solutions, with a strong focus on practical implementation.20240605 QFM017 Machine Intelligence Reading List May 2024
Everything I found interesting about machines behaving intelligently during May 2024
Building RAG with self-deployed Milvus vector database and Snowpark Container...
This talk will give hands-on advice on building RAG applications with an open-source Milvus database deployed as a docker container. We will also introduce the integration of Milvus with Snowpark Container Services.
Securing your Kubernetes cluster_ a step-by-step guide to success !
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
Pushing the limits of ePRTC: 100ns holdover for 100 days
At WSTS 2024, Alon Stern explored the topic of parametric holdover and explained how recent research findings can be implemented in real-world PNT networks to achieve 100 nanoseconds of accuracy for up to 100 days.
Artificial Intelligence for XMLDevelopment
In the rapidly evolving landscape of technologies, XML continues to play a vital role in structuring, storing, and transporting data across diverse systems. The recent advancements in artificial intelligence (AI) present new methodologies for enhancing XML development workflows, introducing efficiency, automation, and intelligent capabilities. This presentation will outline the scope and perspective of utilizing AI in XML development. The potential benefits and the possible pitfalls will be highlighted, providing a balanced view of the subject.
We will explore the capabilities of AI in understanding XML markup languages and autonomously creating structured XML content. Additionally, we will examine the capacity of AI to enrich plain text with appropriate XML markup. Practical examples and methodological guidelines will be provided to elucidate how AI can be effectively prompted to interpret and generate accurate XML markup.
Further emphasis will be placed on the role of AI in developing XSLT, or schemas such as XSD and Schematron. We will address the techniques and strategies adopted to create prompts for generating code, explaining code, or refactoring the code, and the results achieved.
The discussion will extend to how AI can be used to transform XML content. In particular, the focus will be on the use of AI XPath extension functions in XSLT, Schematron, Schematron Quick Fixes, or for XML content refactoring.
The presentation aims to deliver a comprehensive overview of AI usage in XML development, providing attendees with the necessary knowledge to make informed decisions. Whether you’re at the early stages of adopting AI or considering integrating it in advanced XML development, this presentation will cover all levels of expertise.
By highlighting the potential advantages and challenges of integrating AI with XML development tools and languages, the presentation seeks to inspire thoughtful conversation around the future of XML development. We’ll not only delve into the technical aspects of AI-powered XML development but also discuss practical implications and possible future directions.
Uni Systems Copilot event_05062024_C.Vlachos.pdf
Unlocking Productivity: Leveraging the Potential of Copilot in Microsoft 365, a presentation by Christoforos Vlachos, Senior Solutions Manager – Modern Workplace, Uni Systems
How to Get CNIC Information System with Paksim Ga.pptx
Pakdata Cf is a groundbreaking system designed to streamline and facilitate access to CNIC information. This innovative platform leverages advanced technology to provide users with efficient and secure access to their CNIC details.
Alt. GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using ...
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...
The choice of an operating system plays a pivotal role in shaping our computing experience. For decades, Microsoft's Windows has dominated the market, offering a familiar and widely adopted platform for personal and professional use. However, as technological advancements continue to push the boundaries of innovation, alternative operating systems have emerged, challenging the status quo and offering users a fresh perspective on computing.
One such alternative that has garnered significant attention and acclaim is Nitrux Linux 3.5.0, a sleek, powerful, and user-friendly Linux distribution that promises to redefine the way we interact with our devices. With its focus on performance, security, and customization, Nitrux Linux presents a compelling case for those seeking to break free from the constraints of proprietary software and embrace the freedom and flexibility of open-source computing.
Video Streaming: Then, Now, and in the Future
In his public lecture, Christian Timmerer provides insights into the fascinating history of video streaming, starting from its humble beginnings before YouTube to the groundbreaking technologies that now dominate platforms like Netflix and ORF ON. Timmerer also presents provocative contributions of his own that have significantly influenced the industry. He concludes by looking at future challenges and invites the audience to join in a discussion.
Generative AI Deep Dive: Advancing from Proof of Concept to Production
Join Maher Hanafi, VP of Engineering at Betterworks, in this new session where he'll share a practical framework to transform Gen AI prototypes into impactful products! He'll delve into the complexities of data collection and management, model selection and optimization, and ensuring security, scalability, and responsible use.
Large Language Model (LLM) and it’s Geospatial Applications
Large Language Model (LLM) and it’s Geospatial Applications.
Recently uploaded (20)
Essentials of Automations: The Art of Triggers and Actions in FME
Essentials of Automations: The Art of Triggers and Actions in FME
UiPath Test Automation using UiPath Test Suite series, part 6
UiPath Test Automation using UiPath Test Suite series, part 6
Climate Impact of Software Testing at Nordic Testing Days
Climate Impact of Software Testing at Nordic Testing Days
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024
20240609 QFM020 Irresponsible AI Reading List May 2024
20240609 QFM020 Irresponsible AI Reading List May 2024
“Building and Scaling AI Applications with the Nx AI Manager,” a Presentation...
“Building and Scaling AI Applications with the Nx AI Manager,” a Presentation...
20240605 QFM017 Machine Intelligence Reading List May 2024
20240605 QFM017 Machine Intelligence Reading List May 2024
Building RAG with self-deployed Milvus vector database and Snowpark Container...
Building RAG with self-deployed Milvus vector database and Snowpark Container...
Securing your Kubernetes cluster_ a step-by-step guide to success !
Securing your Kubernetes cluster_ a step-by-step guide to success !
Pushing the limits of ePRTC: 100ns holdover for 100 days
Pushing the limits of ePRTC: 100ns holdover for 100 days
How to Get CNIC Information System with Paksim Ga.pptx
How to Get CNIC Information System with Paksim Ga.pptx
Alt. GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using ...
Alt. GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using ...
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...
Generative AI Deep Dive: Advancing from Proof of Concept to Production
Generative AI Deep Dive: Advancing from Proof of Concept to Production
Large Language Model (LLM) and it’s Geospatial Applications
Large Language Model (LLM) and it’s Geospatial Applications
Best painkiller for Java headache
- 1. Best painkiller for Java Headache Nikola Lučić 1
- 3. Great things about java 3 Thing or two about Java
- 4. Not that great thing(s) about java 4 Thing or two about Java
- 5. 5 New(ish) kid in the block - Kotlin
- 6. 6
- 7. 7 Learn it fun way git clone https://github.com/Kotlin/kotlin-koans
- 8. 8
- 9. 9
- 10. Nikola Lučić Software engineer @bol.com nlucic@bol.com Thanks! till next time