May 25, 2021Better Switch-Case for Java!Let’s start with the question, what is wrong with the switch-case anyway? Here’s a simple example of a switch-case in Java:Java4 min readJava4 min read
Published in Analytics Vidhya·Aug 28, 2020Bulk RDBMS Upserts with SpringUpsert is a fairly common terminology in databases, meaning Update if the record exists or Insert the new record. Upserts make more sense in case of simple object save requests with new information. Why Bulk? If we talk about any data sync, data migration or bulk data update jobs, we are bound…Database6 min readDatabase6 min read
Published in The Startup·Apr 16, 2020Member-onlyGoing Reactive!There is a lot of hype around this shiny new thing in web applications development world called being “Reactive”! There are many frameworks popping up with this slogan, e.g., Vert.x, Akka, Spring Webflux, Play, RxJava, RxJS etc. to name a few. What does it mean? and why is this hype…Reactive Programming6 min readReactive Programming6 min read
Published in Analytics Vidhya·Apr 12, 2020Akka Streams in Java Spring Boot!Streaming data from a Source to Sink is a very trivial task in today’s data processing and data pipelining systems. Ergo, there are many streaming solutions out there like: Kafka Stream, Spark Streaming, Apache Flink etc. All of them in one way or another either need an infrastructure to be…Akka Streams5 min readAkka Streams5 min read
Mar 29, 2020Handling Nulls in nested objects (Java)Handling NullPointerException and keeping track of all the nullable values has always been a pain for Java developers. This is even worse when you are working with deeply nested objects and handling all the null values grows exponentially with each nullable nested value. This is visible by all the statements…Java4 min readJava4 min read
Mar 28, 2020Implementing “Circuit Breaker” in ScalaCircuit breaker pattern is a common microservice resiliency pattern to make system responsive after series of failures and have a fallback mechanism. [NOTE] Spoiler — This would be a simple implementation and the Scala code would be stateful and have side-effects. The Need Doing a remote call or executing a task which…Scala3 min readScala3 min read
Oct 17, 2019How to keep your sanity working with Scala Implicit!Scala Implicits provide a lot of power and flexibility to express the code in such beautiful ways that development sometimes feel like and art and are nothing short of a “Brahmastra” in the hand of a library developer. And, as Spider-man’s uncle said, “With great power, comes greater responsibility!” The…Scala3 min readScala3 min read
Oct 7, 2019Making ordinary classes Rich! (Scala)Let me break it to you, this post has nothing to do with charity! Now, let’s start with a question: How do we enrich something? By making it abundant, rich in features and resourceful! In simple OOP terms, we add additional feature methods to the class!! Let’s try to enrich…Programming2 min readProgramming2 min read
Sep 30, 2019Cushing Design Patterns! — Unnecessary Patterns.This is the part-II in the continuation of the “Crushing Design Patterns” series (Part-I) where we debunk the idea of having to use the design patterns to design the system. They are either just so natural that we have been using them unconsciously or there are better ways in which…Programming4 min readProgramming4 min read
Sep 26, 2019Crushing Design Patterns! — Chain of responsibility (Scala)Starting this chain of responsibility of debunking the idea of really needing to use the Design Patterns!. …Programming4 min readProgramming4 min read
