Category Archives: Distributed systems

(eBook) Practical Redis: first few chapters released!

I am happy to announce that the first few chapters of Practical Redis are now available About Practical Redis   It is a hands-on, code-driven guide to Redis where each chapter is based on an application (simple to medium complexity) which … Continue reading

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etcd Watch example using Go client

etcd is a distributed, highly available key-value store which serves as the persistent back end for Kubernetes Here is an example to demonstrate its Watch feature. For details, check out the README (and the sample code) on Github It uses etcd Docker … Continue reading

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NATS on Kubernetes example

In a previous blog, you saw an example of NATS along with producer and consumer – based on Docker Compose. This post uses the same app, but runs on Kubernetes For how to run, follow the README on Github High … Continue reading

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NATS & Kafka: random notes

This is not NATS vs Kafka by any means – just jotting down some info. NATS recently joined CNCF (which host projects like Kubernetes, Prometheus etc. – look at the dominance of Golang here!) and that’s when it caught my attention … Continue reading

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NATS – quick start with Docker

Here is a hello-world example (on Github) for getting started with natsio – a distributed messaging server written in Go It consists of the following components which are managed via Docker Compose NATS server (of course) a Java producer/publisher a Go consumer/subscriber … Continue reading

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Session @ Oracle Code San Francisco 2017

Here are the details for my talk @ Oracle Code (a track at JavaOne 2017) – Streaming Solutions for Real time problems (Stream Processing solutions using Apache Kafka, Kafka Streams and Redis) Code (Github) – https://github.com/abhirockzz/accs-ehcs-stream-processing Video Slides Streaming Solutions for … Continue reading

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Debezium test drive

Debezium is an open source, distributed change data capture system built on top of Apache Kafka. I tried it out and the project is available on Github Setup Details are in the README. It uses the Debezium tutorial as a … Continue reading

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Kafka & Websocket

For those who are interested in an example of Kafka working with the (Java EE) Websocket API, please check out this blog . There is an associated Github project as well Cheers!

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Kafka producer and partitions

There are only a few possible ways to specify partitions while using the Kafka Producer API Just specify it in the ProducerRecord itself If key is not null, (by default) Kafka will hash your key and calculate the partition If key … Continue reading

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Kafka Streams state stores…

This blog explores some common aspects of state stores in Kafka Streams… Default state store By default, Kafka Streams uses the RocksDB as it’s default state store In-memory or persistent ? This parameter of the state store is configurable. RocksDB can … Continue reading

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