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Behind the Scenes of Go Slices and Backing Arrays
Go slices give you a way to work with collections that can grow and shrink without handling arrays by hand.
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Alexander Obregon
Captcha Validation in Spring Boot Login Forms
Adding captcha to a login form helps keep bots from flooding the server with fake sign-in attempts.
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Alexander Obregon
2
Weekly Recap – August 3rd, 2025
Java, Spring Boot, TypeScript, LeetCode, some SQL and Go again
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Alexander Obregon
Why Go's Defer Statements Run Backward
Go’s defer keyword is a built-in part of the language, and the way it behaves follows a specific order that doesn't leave anything up to chance.
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Alexander Obregon
2
Delete Rows Based on a Join Condition
Removing records gets more involved when one table connects to another.
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Alexander Obregon
Daily Summary Emails in Spring Boot Using Scheduled Tasks and Templates
Sending daily summary emails helps people stay on top of what’s happened without checking in all day.
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Alexander Obregon
Writing Tests in Go Without Extra Tools
Testing comes with the language, and you don’t have to bring in anything extra to get real tests working.
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Alexander Obregon
Alexander Obregon's Substack
Weekly recaps of what I’ve published, plus updates, extras, and some exclusive content you won’t find on my Medium.

Alexander Obregon's Substack

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