TOP Questions at the Go Interview | Questions and tasks from real interviews

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Concurrency is a lightweight thread-like construct in Go called goroutine. It allows for the concurrent execution of multiple tasks without explicitly managing threads. Goroutines are similar to coroutines, fibers, or Green threads in other programming languages. They provide advantages such as easy context switching and efficient utilization of system resources.

This chapter discusses common interview questions related to programming. It covers topics such as data structures, algorithms, computer networks, operating systems, and computer architecture.

The Go scheduler is responsible for managing goroutines and scheduling their execution. It uses cooperative multitasking, which includes both cooperative and preemptive multitasking models. The scheduler transitions from the global queue to the local queues based on certain conditions. It also utilizes work-stealing to balance the workload among different processors.

Channels in Go are like pipelines that allow communication between goroutines. They have a buffer, which determines the number of values they can hold before blocking. Channels can be buffered or unbuffered, and their usage patterns vary depending on the application.

This chapter explores the relationship between memory and garbage collection in Go. It discusses how the size of a program affects its dynamic growth, as well as concepts like contiguity and segments. The video also addresses cloud storage and asks about additional aspects of memory management, such as garbage collectors.

Slices and maps are important data structures in Go programming. The main difference between a slice and an array is that a slice is dynamically resizable, while an array has a fixed size. Slices can be expanded using the append function, which increases their capacity as needed. On the other hand, maps are key-value pairs where each value can be accessed using its corresponding key. They use hash tables to store data efficiently but may encounter collisions when two keys have the same hash value.

In this chapter, we explore how strings are handled in the Go programming language. We discuss the mutability of strings and answer common questions about their internal structure. Additionally, we cover topics such as modifying individual characters within a string and concatenating multiple mutable strings together. Finally, we explain how to calculate the length of a string using built-in functions.

Go supports object-oriented programming through the use of structs and methods. It allows for encapsulation, inheritance, and polymorphism. Duck typing is used to determine if a type satisfies an interface.

When working with Go interfaces, it is important to understand how they function and the additional questions that may be asked during interviews. One such question relates to pointers, especially when used in parent-child relationships. Another common topic is contexts - interviewers often ask about their definition and usage. Additionally, you might encounter questions about Graceful Shutdowns - understanding what they are and how you would implement them.

In conclusion, it is important to reflect on the recent developments in programming. Programming cannot be memorized or learned completely, but rather focuses on building a strong foundation and continuously learning new concepts every day. By doing so, you will feel more confident during interviews.