@gerardhynes

Gerard Hynes

@gerardhynesJoined September 2025

Currently working on realtime and historical reporting with Scala, Kafka and Kubernetes.

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Gerard Hynes's blogs

freeCodeCamp Englishfreecodecamp.org/news4 posts

The Apache Kafka Handbook – How to Get Started Using Kafka

Apache Kafka is an open-source event streaming platform that can transport huge volumes of data at very low latency. Companies like LinkedIn, Uber, and Netflix use Kafka to process trillions of events and petabtyes of data each day. Kafka was origina...

Feb 3, 2023 · 37 min readfreecodecamp.org

How to Format Compact Numbers with the JavaScript Internationalization API

Sometimes it can be difficult to fit large numbers into your site or app's layout, especially if you have to display several of them together. As a result, a lot of modern sites and apps use the same format to display large numbers in a compact way. ...

Jan 4, 2023 · 6 min readfreecodecamp.org

Learn the Eleventy Static Site Generator by Building and Deploying a Portfolio Website

What is Eleventy? Eleventy (also called 11ty) is a simple yet powerful static site generator. It uses JavaScript to transform data and templates into HTML pages. It’s beginner-friendly, has fast build times, and generates fast sites by default. It al...

Sep 6, 2022 · 29 min readfreecodecamp.org

How to Manage PostgreSQL Databases from the Command Line with psql

Now is a great time to learn relational databases and SQL. From web development to data science, they are used everywhere. In the Stack Overflow 2021 Survey, 4 out of the top 5 database technologies used by professional developers were relational dat...

Jun 7, 2022 · 15 min readfreecodecamp.org

Gerard Hynes

About

Available for

Gerard Hynes's blogs

The Apache Kafka Handbook – How to Get Started Using Kafka

How to Format Compact Numbers with the JavaScript Internationalization API

Learn the Eleventy Static Site Generator by Building and Deploying a Portfolio Website

How to Manage PostgreSQL Databases from the Command Line with psql

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Gerard Hynes

About

Available for

Gerard Hynes's blogs

The Apache Kafka Handbook – How to Get Started Using Kafka

How to Format Compact Numbers with the JavaScript Internationalization API

Learn the Eleventy Static Site Generator by Building and Deploying a Portfolio Website

How to Manage PostgreSQL Databases from the Command Line with psql