Published in Level Up Coding·PinnedMember-onlyA RESTFul Gopher living in dockerA simple definitive guide for beginners in Go to build a REST API and running inside a docker container — Go compiler can produce a binary file which is can natively run on any machine(given its built for that). However, there are times it is more convenient to containerize your application and this tutorial will help you to build a basic RESTFul API built-in go and containerize it. Building a Web Server in GoWriting4 min readWriting4 min read
Published in Level Up Coding·PinnedMember-onlyPlan to ace your next system design interviewIt's a daunting task to prepare for an interview, let alone system design but there is a better approach one can — So you have your interview with a company in which you always to longed to work say Google and you aced that pair-programming session and next comes whiteboard session which is a very subjective topic as there are no few right answers like how you solved that coding challenge but…Interview6 min readInterview6 min read
Published in Level Up Coding·PinnedMember-onlyWhat’s new in Java 15JEP’s in Java 15 that will help developers — Introduction Java 15 which came into General availability brought a very good set of 14 features. Out of those 14 features, few are additions and few are removed/disabled from current java eco-system. Here is the list of features added Edwards-Curve Digital Signature Algorithm (EdDSA) Sealed Classes (Preview) Hidden Classes Remove the…Software Development10 min readSoftware Development10 min read
Published in Level Up Coding·Jan 9Member-onlyHow to check if a map contains a key in GoOne of the most frequently asked questions in Go is “How do I check if a given map consists of a key already?” Here is a quick and short answer so you can take it and go on continue building your app m := make(map[string]int) value, ok := m["chemistry"] // If the…Go2 min readGo2 min read
Published in Level Up Coding·Jan 7Member-onlyHow to handle errors in GoError handling in Go is different than other programming languages like Java or Python for example. Go built-in errors don't contain stack traces, nor support conventional try/catch methods to handle them. Instead, errors in Go are just values returned by functions. A very good article on “Errors” from Rob pike…20225 min read20225 min read
Published in Level Up Coding·Jan 7Member-onlyCreating slimmer docker imagesThis article shows approaches you could follow to reduce your docker image sizes. Prerequisites Basic understanding of Docker. This is a very good starter from docker https://docs.docker.com/get-started/ on basics Advantages One main immediate benefit of keeping the docker image is, It gives your application the ability to scale horizontally faster What it…3 min read3 min read
Published in Level Up Coding·Dec 19, 2022Member-onlyHow to handle errors in GoError handling in Go is different than other programming languages like Java or Python for example. Go built-in errors don’t contain stack traces, nor support conventional try/catch methods to handle them. Instead, errors in Go are just values returned by functions. A very good article on “Errors” from Rob pike…20225 min read20225 min read
Published in Level Up Coding·Dec 17, 2022Member-onlyDefining Structs in GoGo’s structs are typed collections of fields. They’re useful for grouping data together to form records. Basics: Go’s structs are typed collections of fields. They’re useful for grouping data together to form records. A struct can be compared with the class in the Object-Oriented Programming paradigm. Imagine struct being an Employee…Go7 min readGo7 min read
Published in Level Up Coding·Dec 14, 2022Member-onlySimple Steps to Automate WhatsApp Messages with GolangThis is a short how-to-do type of tutorial to deliver a message or notification via WhatsApp with a few lines of code. Twilio provides a WhatsApp sandbox, which we need here to develop and test your application. In this section, you are going to connect your smartphone to the sandbox…20224 min read20224 min read
Published in Level Up Coding·Dec 12, 2022Member-onlyMaster backend engineeringfundamental concepts for building backend systems — After a decade+ long journey into designing, building, and scaling backend systems supporting several flagship products while learning from my failings, at times I thought what if someone told me exactly a concept worth mastering? Here I am writing for someone just starting their career a very small glimpse of…20227 min read20227 min read
