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Get started with Spring 5 and Spring Boot 2, through the Learn Spring course:


1. Spring and Java

>> CopyOnWriteArrayList and Collection#toArray() []

Deep into safe usage of the CopyOnWriteArrayList. If you haven't been working on concurrency lately, this is a solid read.

>> What's New in Java 16 []

I assume you're not yet using Java 16 in production. A half-hour very well spent.

Also worth reading:

Webinars and presentations:

Time to upgrade:

2. Technical and Musings

>> Making POST and PATCH requests idempotent []

Easy to not get this right, and definitely important to – yes, idempotency is the correct way to implement these operations but also makes things so much easier long term.

>> Software Mistakes and Tradeoffs []

Looks like a very interesting read when it's fully out, and Tomasz shared a 35% off code with me to include in this week's Java Weekly: nlbaeldung21. Enjoy

Also worth reading:

3. Pick of the Week

This is our third and hopefully last COVID launch ever:

>> All Courses on Baeldung are 30% off – starting yesterday

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Java Weekly, Issue 391
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