Part 1 - Programming Model Part 2 - Programming Model Continued Part 3 - Data deserialization and serialization

Continuing with the series on looking at the Spring Cloud Stream binder for Kafka Streams, in this blog post, we are looking at the various error-handling strategies that are available in the Kafka Streams binder.

The error handling in Kafka Streams is largely centered around errors that occur during deserialization on the inbound and during production on the outbound.

Handling Deserialization Exceptions

Kafka Streams lets you register deserialization exception handlers. The default behavior is that, when you have a deserialization exception, it logs that error and fails the application (LogAndFailExceptionHandler). It also lets you log and skip the record and continue the application (LogAndContinueExceptionHandler). Normally, you provide the corresponding…

Hi, Spring fans! This week Josh Long (@starbuxman) talks to Pivotal's Katrina Bakas about the Pivotal HealthWatch product, Kubernetes, Cloud Foundry and so much more.

• Katrina's Medium blog

Part 1 - Programming Model Part 2 - Programming Model Continued

Continuing on the previous two blog posts, in this series on writing stream processing applications with Spring Cloud Stream and Kafka Streams, now we will look at the details of how these applications handle deserialization on the inbound and serialization on the outbound.

All three major higher-level types in Kafka Streams - KStream<K,V>, KTable<K,V> and GlobalKTable<K,V> - work with a key and a value.

With Spring Cloud Stream Kafka Streams support, keys are always deserialized and serialized by using the native Serde mechanism. A Serde is a container object where it provides a deserializer and a…

On the heels of the previous blog in which we introduced the basic functional programming model for writing streaming applications with Spring Cloud Stream and Kafka Streams, in this part, we are going to further explore that programming model.

Let’s look at a few scenarios.

Scenario 1: Single input and output binding

If your application consumes data from a single input binding and produces data into an output binding, you can use Java’s Function interface to do that. Keep in mind that binding in this sense is not necessarily mapped to a single input Kafka topic, because topics could be…

Hi, Spring fans! Can you believe - and I can't, by the way - that we're already in December 2019? The last month before the new year? The last month of this decade? It defies belief! I can't even imagine how we got this far so quickly, but it's great that we did. I started writing This Week in Spring in the first week of January 2011, so we're fast approaching 9 years of This Week in Spring!

As I write this I am in Toronto, Canada, for the last stop on the SpringOne Tour train for 2019. I enjoyed giving a two-hour talk introducing all sorts of stuff in the wide world of Reactive Spring…

This is the first in a series of blog posts in which we will look at how stream processing applications are written using Spring Cloud Stream and Kafka Streams.

The Spring Cloud Stream Horsham release (3.0.0) introduces several changes to the way applications can leverage Apache Kafka using the binders for Kafka and Kafka Streams. One of the major enhancements that this release brings to the table is first class support for writing apps by using a fully functional programming paradigm. This blog post gives an introduction to how this functional programming model can be used to develop stream…

Hi, Spring fans! In today's episode Josh Long (@starbuxman) talks to Spring Tools lead Martin Lippert (@martinlippert) about his time at Pivotal, and on the Spring team, his work on Spring Tools, and his work on language servers that now serve as the foundational integration for Spring users using Microsoft's Visual Studio Code, emacs and Atom, among other things.

Thanks, dear listener, and Happy Thanksgiving!

• Spring Tools
• Martin Lippert's profile page
• the Wikipedia description for Thanksgiving

Hi, Spring fans! Welcome to yet another installment of This Week in Spring! This week, I'm in Tokyo, Japan, for the Pivotal Summit Japan event. I've regretfully had to miss the China and Korea events because of a famly emergency, so it's nice to be able to make this, the last stop on the tour, before returning to California to celebrate Thanksgiving with the family.

And, on that note... it's almost Thanksgiving in the US. Thanksgiving is a time for us in the US to reflect on that for which we're thankful. I think I speak for the entire Spring team when I say that we are very grateful for you…

We are pleased to announce the release of the Spring Cloud Stream Horsham (3.0.0.RELEASE) release train which is available as part of Spring Cloud Hoxton.RELEASE (imminent) and builds on Spring Boot 2.2.x and Spring Cloud Function 3.0.0.RELEASE which was also just released.

Spring Cloud Stream Horsham.RELEASE modules are available for use in the Maven Central repository.

Quick highlights:

As mentioned in these posts (demystified and simplified, functional and reactive, stream and spring Integration and event routing) preceding this announcement, the core theme of this release is functions!.

Historically, Spring Cloud Stream exposed annotation-based configuration model that required the user to be aware of and provide considerable amount of boilerplate information that could be otherwise easily inferred. You can read more details about it here…