Recent Posts
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Instrumenting Applications with Prometheus
Monitoring is an integral part of any non-trivial system, by the monitoring process, we then have an insight into the application performance and status, such as RPM, CPU usage, and […]
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Covariance and Contravariance (Java)
Many programming languages support subtyping, for example, MechanicalKeyboard can be a subtype of Keyboard, and according to the Liskov substitution principle, the MechanicalKeyboard instance should be substitutable everywhere the Keyboard […]
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Some notes about TreeSet in Java
The most frequent data structure that I use in Java is the List. But sometimes if I have to store distinct elements without caring about the ordering, then I would […]
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Thread confinement in Java
As a Java developer, perhaps all of us have written some kind of single-threaded program. In this program, we can reason about our code much easier when compared with multi-threaded […]
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Creating callback functions in Java
If you are familiar with some event-driven languages such as JavaScript, especially the ES6 version or later, you probably have done some work with callback functions all the time. By […]
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Why do you need to override equals and hashCode methods in Java?
If you have used some data structures such as a hash map or a hash set for storing your custom object, you probably have to write your own implementation of […]
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Delegate pattern with Consumer interface in Java
As a Java programmer, sometimes you run into a situation when you want to take a task of an object and give it to another object, meaning the original object […]
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Frequently used git commands
Have you just landed your dream job as a programmer? Congrats! We can have different backgrounds and work on different tech stacks. However, no matter which technologies you use, working […]
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Building a Web Development PC
It’s no secret that web developers have to meet certain computer specifications if they want to do their work efficiently. For example, the Digital Hacker’s guide suggests a RAM that’s at least […]
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Understanding Method References in Java
Before Java 8, to provide an implementation for an interface, we need either to create a concrete class that implements this interface or, more concisely we can, use an anonymous […]
