Yonatan Karp-Rudin – Medium

Yonatan Karp-Rudin

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Yonatan Karp-Rudin

How to break your HashMap in less than a minute

TL;DR: Never use mutable objects as keys in your HashMap!

4 min readDec 5, 2022

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How to break your HashMap in less than a minute

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Pinned

Yonatan Karp-Rudin

How does HashMap work in Java?

As an interviewer, I often ask the question about how HashMap works in Java. It helps me assess a candidate’s understanding of data…

5 min readNov 24, 2022

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How does HashMap work in Java?

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Yonatan Karp-Rudin

Design Patterns — ProtoType

TL;DR: The Prototype design pattern creates new objects by cloning a prototypical instance, allowing you to modify the copy without…

4 min readNov 20, 2023

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Design Patterns — ProtoType

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Yonatan Karp-Rudin

Design Patterns -Builder

TL;DR: Separate the construction of a complex object from its representation so that the same construction process can create different…

4 min readNov 3, 2023

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Design Patterns -Builder

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Yonatan Karp-Rudin

Design Patterns — Abstract Factory

TL;DR: Abstract Factory pattern provides an interface for creating families of related or dependent objects without specifying their…

5 min readOct 26, 2023

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Design Patterns — Abstract Factory

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Yonatan Karp-Rudin

Design Patterns — Factory

TL;DR: Factory pattern provides a static method encapsulated in a class to hide implementation logic, allowing client code to focus on…

3 min readOct 24, 2023

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Design Patterns — Factory

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Yonatan Karp-Rudin

Our Errors, Your Gain: A System Design Cautionary Tale

How improving our architecture boost our performance by 450%

8 min readOct 23, 2023

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Our Errors, Your Gain: A System Design Cautionary Tale

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Yonatan Karp-Rudin

Observability in Action Part 3: Enhancing Your Codebase with OpenTelemetry

This blog post was moved to https://kotlinbackend.com/observability-in-action-how-to-use-opentelemetry/

1 min readOct 17, 2023

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Yonatan Karp-Rudin

Observability in Action Part 2: Enhancing Your Codebase with OpenTelemetry

This blog post was moved to https://kotlinbackend.com/observability-in-action-how-to-use-opentelemetry/

1 min readOct 5, 2023

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Yonatan Karp-Rudin

Observability in Action Part 1: Enhancing Your Codebase with OpenTelemetry

This blog post was moved to https://kotlinbackend.com/observability-in-action-how-to-use-opentelemetry/

1 min readOct 5, 2023

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Yonatan Karp-Rudin

Yonatan Karp-Rudin

A senior backend engineer focusing on Kotlin for backend. Visit my blog at http://yonatankarp.com or check out my lists for specific series of articles

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