Danylo Halaiko – Medium

Danylo Halaiko

📝Back-of-the-Envelope Estimation: Simplifying System Design with Quick Approximations

Have you ever needed to make a quick estimation or gain a rough understanding of a problem or scenario without delving into complex…

4 min readMay 29, 2023

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📝Back-of-the-Envelope Estimation: Simplifying System Design with Quick Approximations

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Danylo Halaiko

🤵Questions and Answers for Middle Go Developer Interviews: A Comprehensive Guide

As the field of software development continues to evolve, so does the demand for skilled professionals in various programming languages. Go…

62 min readMay 22, 2023

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🤵Questions and Answers for Middle Go Developer Interviews: A Comprehensive Guide

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Danylo Halaiko

👦Master Your Junior Go Developer Interview: Essential Questions and Answers to Boost Your…

As the demand for Go (Golang) continues to rise, many companies seek junior developers with a solid foundation in the language and its…

51 min readMay 15, 2023

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👦Master Your Junior Go Developer Interview: Essential Questions and Answers to Boost Your…

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Danylo Halaiko

🚀The Evolution of System Design: A Journey from Single Server to a Scalable Infrastructure

System design is an essential part of building any scalable application, and it is the process of designing a large and complex software…

12 min readMay 8, 2023

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🚀The Evolution of System Design: A Journey from Single Server to a Scalable Infrastructure

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Danylo Halaiko

🏗️Building Robust, Scalable, and Event-Driven Orchestration Applications with AWS Step Functions…

In today’s world, building complex, distributed applications that require the coordination of multiple services is becoming more common…

9 min readMay 1, 2023

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🏗️Building Robust, Scalable, and Event-Driven Orchestration Applications with AWS Step Functions…

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Danylo Halaiko

💰Maximizing Efficiency: A Guide to Cost-Optimizing Your DynamoDB Population

DynamoDB is a NoSQL database service that provides fast and flexible performance, scalability, and high availability for applications that…

9 min readApr 24, 2023

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💰Maximizing Efficiency: A Guide to Cost-Optimizing Your DynamoDB Population

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Danylo Halaiko

🔍📈💾Exploring Advanced Indexing Structures in Databases

In the world of databases, indexing plays a crucial role in improving performance and query efficiency. While primary key indexes are…

6 min readApr 17, 2023

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🔍📈💾Exploring Advanced Indexing Structures in Databases

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Danylo Halaiko

🔐Integrating Firebase Auth with AWS API Gateway Lambda Authorizer: A Secure and Scalable Solution…

In today’s digital age, user authentication and access control are critical components of any secure and scalable application. One popular…

9 min readApr 10, 2023

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🔐Integrating Firebase Auth with AWS API Gateway Lambda Authorizer: A Secure and Scalable Solution…

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Danylo Halaiko

🌳Understanding B-Trees: The Most Common Indexing Structure in Databases

Welcome to the world of database indexes! In the vast landscape of database technologies, indexes are crucial components that make data…

6 min readApr 3, 2023

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🌳Understanding B-Trees: The Most Common Indexing Structure in Databases

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Danylo Halaiko

🚀Rev up your Payment Processing with PayPal Integration on Firebase Functions

Are you looking to add online payment functionality to your web or mobile application? Look no further than integrating PayPal Checkout…

10 min readMar 27, 2023

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🚀Rev up your Payment Processing with PayPal Integration on Firebase Functions

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Danylo Halaiko

Danylo Halaiko

Talk about tools and features of software called to reduce the pain of development | Degree in Computer science | Professional backend developer

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