Understanding Inner workings of the Golang Channels — A goroutine is a lightweight user-space thread, which is managed by the Go runtime. It executes tasks concurrently, potentially in parallel. A channel is for communication between goroutines. In this post, we will delve into the inner workings of the channel and its send/ receive operations. Making Buffered channels Let’s…

Confusion matrix, Accuracy, Precision, Sensitivity, Specificity, F1 score, and Roc curve, let’s remember them once for all — Despite having seen all these concepts more than a thousand times, I’m still getting confused sometimes. Is there a good way to think about all these concepts so that they start making sense? In this post, I will focus on how to remember them. If you’re not familiar with them…

Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache and message broker. It supports data structures such as strings, hashes, lists, sets, sorted sets with range queries, bitmaps, hyperloglogs and geospatial indexes with radius queries. Redis is the world’s most popular in-memory data…

In Ethereum, there are too many new terms to learn. In this article, we will go through the most important Ethereum terms. Now let’s get started! 1. Blockchain A blockchain is a type of shared database that differs from a typical database in the way it stores information; blockchains store data in…

In this article, I’ll demonstrate the basics of handling error functions in Go and how to use them. What is the Error Type? The error type in Go is an interface type. type error interface { Error() string } So basically, the error type is anything that implements the Error() method. Constructing Errors There are two ways…

GraphQL is a super powerful concept that can help us build APIs. This post will share a straightforward movie application for learning GraphQL CRUD operations. Prerequisites MongoDB database Node running environment The complete code is here Design the Schema In REST, we see APIs as a collection of endpoints; however, in GraphQL, we see…

As a Golang learner, I recommend the following books to learn this programming language. I hope you can enjoy them. The Go Programming Language Concurrency in Go Go Learn Data Structures and Algorithms with Golang The Distributed Services Go Mastering Go The Go Programming Language Author: Alan A. A. Donovan & Brian W. Kernighan …

gRPC is a modern open-source, high-performance Remote Procedure Call (RPC) framework that can run in any environment. It is best suitable for internal communication between microservices. Let’s build a simple gRPC application from scratch to understand gRPC better. Building a Microservice in Golang Let’s use an example of a book service to demonstrate how to…

Instantiating a singleton object is a way to ensure that only one instance of a class is created. I will demonstrate different ways to instantiate a singleton object in this post. 1. Package Level Variable Variable defined in a package scope is accessible to all the files in the same package. It is helpful…