middleware – Rafael Bernard Araujo

Your AI Coding agent doesn’t know when to ask for help

Why do multi-agent coding systems fall apart on complex, real-world tasks?

Focus on building multiplayer, dynamic systems that provide the right information reliably, rather than crafting magical wording. Design workflows where AI can fetch what it needs automatically.

Value Object

When programming, I often find it's useful to represent things as a compound.

Range - Further Enterprise Application Architecture development

It's quite common to see comparisons where a value is checked against a range of values. Ranges are usually handled by a pair of values and you check against them both. Range instead uses a single object to represent the range as a whole, and then provides the relevant operations to test to see if values fall in the range and to compare ranges.

JDK 17 Memory Bloat in Containers: A Post-Mortem

I just love runtime upgrades. Runtime upgrade are very important. And they need careful planning. Not unusual that they teach us important lessons for the next upgrade.

When engineering teams modernize Java applications, the shift from JDK 8 to newer Long-Term Support (LTS) versions, such as JDK 11, 17, and soon 21, might seem straightforward at first. Since Java maintains backward compatibility, it's easy to assume that the runtime behavior will remain largely unchanged. However, that's far from reality.

My Fitbit Buzzed and I Understood Enshittification

My Fitbit started buzzing at me a year ago. “It looks like you’re exercising.”

Product development is also an exercise in human relationships. And when we reduce those relationships to metrics, we lose something essential. We lose the ability to say, “This would be rude.” We lose the ability to treat users like people instead of engagement vectors.

Using the Middleware Pattern to Extend PHP Libraries

PSR-15 did not invent middleware. But it showed the PHP community what a well-designed, typed middleware interface looks like. There is no reason to leave that idea at the HTTP layer.

If you maintain a PHP library with any non-trivial processing, consider building middleware support in from day one. Your users will thank you, and so will your future self.

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Why Writing Is Important for Engineers

Learning by teaching has been an important pedagogical approach for a long time. As engineers, most of us are probably familiar with the story of the rubber duck, made popular in The Pragmatic Programmer, where explaining your problem to an inanimate object helps you understand it better yourself.

A Comprehensive Guide to Undoing Changes In Git

Git is a powerful version control system for tracking source code changes, for small and large projects alike. Sometimes you’ll encounter situations that require you to undo changes you’ve made to a Git repository.

Git changes cannot be undone with a simple back button. This is intended to protect the integrity of the codebase. Instead, you’ll need to learn the proper Git commands and the appropriate situations for using each command.

How the PHP Middleware Pattern works and can easily be applied

In this post we'll be looking at Middleware in PHP. This pattern is most common in the handling of requests and responses. But the Middleware Pattern can also be applied in various other places. We'll look into what middleware is, how middleware works, when middleware can be useful and what an alternative to middleware might be.

Tuning PostgreSQL Auto-vacuum

In PostgreSQL, rows that are deleted or modified are not completely removed. Rather they are marked as dead tuples. In other words, PostgreSQL does not physically remove these rows but places a marker on them to prevent future queries from returning or accessing dead tuples.

PostgreSQL provides the VACUUM command and VACUUM ANALYZE commands to get rid of dead rows or tuples. However, both commands differ in how they operate.

Learn Vim Progressively

tl;dr: You want to teach yourself vim (the best text editor known to human kind) in the fastest way possible. This is my way of doing it. You start by learning the minimal to survive, then you integrate all the tricks slowly.

Vim the Six Billion Dollar editor

Better, Stronger, Faster.