software

3 posts

reduce Java docker image size

How to reduce Java docker image size

If you’ve been using Java for a while, you might have noticed that starting with Java 11, Java Runtime Environment (JRE) doesn’t have a separate distribution anymore, it is only distributed as a part of Java Development Kit (JDK). As a result of this change, many official Docker images don’t offer a JRE-only image, e.g.: official openjdk images, Amazon corretto images. In my case using such an image was resulting in an app image of 414MB, where the app itself was only taking around 60MB. What a waste of space!

But fear not, as I’m going to show you how to reduce Java docker image size dramatically.

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How to unblock yourself

How to unblock yourself

It’s not uncommon for a software engineer to find themself blocked. The reasons might vary: it could be a high uncertainty, when it’s unclear how exactly to implement the feature; or it could be a tech decision to take having multiple options with their own pros and cons. With this article I want to share the way I take decisions in such cases and how it might help you to unblock yourself.

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