Andrzej Ludwikowski

129 posts

Andrzej Ludwikowski

@aludwikowski

Software Journeyman (Java, Scala), Consultant, Speaker & Trainer | Certified Reactive Architect, Certified Cassandra Architect, Certified Kafka Developer

Katılım Mart 2010

31 Takip Edilen312 Takipçiler

Andrzej Ludwikowski@aludwikowski·20 Oca

@adamwarski @akka_io_ By default, the workflow step will be executed infinitely unless you specify it differently #_recover_strategy" target="_blank" rel="nofollow noopener">doc.akka.io/java/workflows… Idempotency (which I will cover separately) could be solved by saving a "paymentId" in the workflow state, and use it for the calls.

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Adam Warski@adamwarski·18 Oca

@akka_io_ @aludwikowski Also, the interesting part here is what are the guarantees when it comes to idempotency/retries etc. How many times at most will `makePayment` be called? How can we create an idempotency key there to pass it to the (external) payment processor?

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Akka@akka_io_·16 Oca

Akka 3 simplifies building #distributedsystems with a powerful new component, #Akka Workflow—an innovative feature that enables devs to model, orchestrate and execute complex workflows with ease. Learn more in this blog by @aludwikowski. bit.ly/40B0XEu

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Andrzej Ludwikowski@aludwikowski·20 Oca

@adamwarski @akka_io_ However, I agree that what should be exposed and where - deserves a separate discussion (not covered in this post), and of course, dedicated types are a way to go, but I just wanted to keep everything simple.

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Andrzej Ludwikowski@aludwikowski·20 Oca

@adamwarski @akka_io_ "It depends", sometimes, a business id is a natural candidate for an infrastructural id. In this context, it looks pretty standard: ``` @Post(....) placeOrder(String orderId, PlaceOrder placeOrder) { return componentClient.forWorkflow(orderId) ... } ```

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Andrzej Ludwikowski@aludwikowski·7 Ağu

A summary of my recent #Akka benchmarking activity, up to 1,000,000 req/s. Mixed load: 75% reads, 25% (consistent) writes. All done with moderate Postgres DBs. lightbend.com/blog/benchmark…

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Andrzej Ludwikowski retweetledi

Akka@akka_io_·18 Haz

Attending @Devoxx Poland this week? Join @aludwikowski, Software Architect at Lightbend on Friday at 9am as he talks: "Event-driven systems without pulling your hair out". Learn more here: bit.ly/4esD2fg #DevoxxPoland2024 #Devoxx #Lightbend #Developer #DeveloperEvent

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Andrzej Ludwikowski retweetledi

Akka@akka_io_·15 Şub

A record year as Lightbend lays a foundation for continued growth and expansion. Read about our achievements and what’s up next. bit.ly/lb_blog_record… #Lightbend #Akka #Kalix #AkkaEdge #Developer #AppDevelopment #SaaS #PaaS #API #APIs #ApplicationDevelopment #CloudNative

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Andrzej Ludwikowski retweetledi

SoftwareMill@softwaremill·18 Eyl

What is your most wanted #java21 feature 🤔 #UncoverJava with us and check what @jMargaritaN @aludwikowski @piotrprz @NoobFunctor can't wait for! #java #projectloom #structuredconcurrency

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Andrzej Ludwikowski@aludwikowski·19 Eyl

It's time for the cherry on top - Workflow component. Orchestration vs. choreography it's a never-ending debate :)

Akka@akka_io_

The final part of our Saga patterns in #Kalix blog series by @aludwikowski can be found below. The first four parts of this series examined choreography-based Sagas, and this last one will cover the second Saga flavor - orchestration. bit.ly/Kalix_Blog_sag… #Lightbend

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Andrzej Ludwikowski@aludwikowski·18 Eyl

Have a look at what you should expect when implementing DLQ for an ordered stream of events. Tricky stuff.

Akka@akka_io_

Check out part 4 of our Saga patterns in #Kalix blog series written by @aludwikowski. This blog talks about error handling, one of the most tricky parts when working with long-lived business processes. bit.ly/Kalix_Blog_sag… #Lightbend #SagaPattern #Microservices #Developer

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Andrzej Ludwikowski@aludwikowski·14 Eyl

3/5 - the most generic part. Having a rich deduplication strategies toolbox is the key for distributed system development.

Akka@akka_io_

Have you started reading our Saga patterns in #Kalix blog series written by @aludwikowski, Software Architect at Lightbend? You can find part 3 here: bit.ly/Kalix_Blog_sag… #Lightbend #SagaPattern #Microservices #Developer

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Andrzej Ludwikowski@aludwikowski·12 Eyl

1/5. Four more to come. No more trivial examples, the code will get more and more interesting :)

Akka@akka_io_

Check out part 1 of our Saga Patterns in #Kalix blog series written by @aludwikowski, Software Architect at Lightbend. bit.ly/Kalix_Blog_sag… #Lightbend #SagaPattern #Microservices #Developer

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Andrzej Ludwikowski retweetledi

Akka@akka_io_·11 Tem

Check out our latest Akka blog, "Get Productive with Akka Streams" by Janik Dotzel Professional Services at Lightbend. bit.ly/Akka_Blog_get-… #Lightbend #Akka #AkkaStreams #Developer #ApplicationDevelopment

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Andrzej Ludwikowski@aludwikowski·12 Tem

Happy to share, that I've been working on this new #Kalix feature for the past few months. It's ready to use, but we're planning to make it even more powerful. More detailed Saga pattern blog post series coming soon kalix.io/developer/blog…

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Andrzej Ludwikowski retweetledi

InfoQ@InfoQ·10 Ara

#ICYMI #JMeter & #Gatling are one of the most popular performance testing tools. @aludwikowski has been using both for quite some time and he has summarized his experiences in this #InfoQ article: bit.ly/3PeZdsq #Java #LoadTesting #JVMLanguages #Performance #DevOps

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Andrzej Ludwikowski retweetledi

Akka@akka_io_·2 Ara

Check out our blog "Introducing Spring SDK for #Kalix." by @octonato, Principal Engineer, Lightbend. This blog shows off the new feature that offers a developer experience familiar to Spring Boot users. bit.ly/KalixBlog_Intr… #Developer #Kalix #Java #API #SpringBoot #SpringSDK

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Andrzej Ludwikowski@aludwikowski·31 Eki

@youribm Oh, that's disappointing, how about now: drive.google.com/file/d/1J5UzfU…

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Andrzej Ludwikowski@aludwikowski·12 Eki

My slides from #DevoxxBE #Devoxx slideshare.net/AndrzejLudwiko…

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Andrzej Ludwikowski retweetledi

Akka@akka_io_·4 Eki

Attending #Devoxx Belgium 2022? @aludwikowski will be presenting Event Sourcing - what could possibly go wrong? on October 12th. Don't miss out! Learn more here: bit.ly/LB_DevoxxTalk_… #Lightbend #Kalix #EventSourcing #DevoxxBelgium #Software

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Andrzej Ludwikowski retweetledi

SoftwareMill@softwaremill·3 Eki

Did you know that you can manage at-least-once delivery not only on the producer but also on the consumer side? 💡 ➡️ softwaremill.com/message-delive… @aludwikowski sheds some light on possible problems and solutions with message delivery. #distributedsystems #programming

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Andrzej Ludwikowski retweetledi

SoftwareMill@softwaremill·27 Eyl

We can now use #Gatling with the #Java language! On our blog, @aludwikowski tries it out on a sample scenario to verify the new performance-test-as-a-code Java DSL: 🔹 buff.ly/3rbTzgd

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Keşfet

@adamwarski @akka_io_ @Devoxx @jMargaritaN @piotrprz @NoobFunctor @octonato @elonmusk