Blog about Scala, functional programming and software development.https://yadavan88.github.io/https://yadavan88.github.io/posts/apache-datasketches-a-guide-to-sketch-types/https://yadavan88.github.io/posts/apache-datasketches-a-guide-to-sketch-types/A quick overview of cardinality, percentiles, frequency, sampling, and membership sketches, with their use cases and trade-offs.Sun, 01 Nov 2026 15:33:53 GMThttps://yadavan88.github.io/posts/fast-approximate-analytics-in-scala-with-apache-datasketches/https://yadavan88.github.io/posts/fast-approximate-analytics-in-scala-with-apache-datasketches/Learn HLL, KLL and Frequent Items sketches in Scala with Apache DataSketches, and inspect stored sketches with SketchProbe.Sat, 31 Oct 2026 19:56:29 GMThttps://yadavan88.github.io/posts/safe-ai-agentic-development-sandboxing-coding-assistants/https://yadavan88.github.io/posts/safe-ai-agentic-development-sandboxing-coding-assistants/Secure local environments from AI coding agents by sandboxing. How to isolate Claude using nono, Nix, or Docker to block unsafe commands.Thu, 08 Oct 2026 15:02:21 GMThttps://yadavan88.github.io/posts/building-a-generic-data-integration-pipeline-in-scala-the-data-plumber-part-3/https://yadavan88.github.io/posts/building-a-generic-data-integration-pipeline-in-scala-the-data-plumber-part-3/This blog is a part of the ***Data Plumber Series.***Tue, 18 Mar 2025 05:35:14 GMThttps://yadavan88.github.io/posts/building-a-generic-data-integration-pipeline-in-scala-the-data-plumber-part-2/https://yadavan88.github.io/posts/building-a-generic-data-integration-pipeline-in-scala-the-data-plumber-part-2/This blog is a part of the ***Data Plumber Series******.***Mon, 17 Mar 2025 19:09:17 GMThttps://yadavan88.github.io/posts/building-a-generic-data-integration-pipeline-in-scala-the-data-plumber-part-1/https://yadavan88.github.io/posts/building-a-generic-data-integration-pipeline-in-scala-the-data-plumber-part-1/This blog is a part of the Data Plumber Series.Mon, 17 Mar 2025 18:09:10 GMThttps://yadavan88.github.io/posts/a-generic-approach-to-parsing-csv-into-case-classes-in-scala-3/https://yadavan88.github.io/posts/a-generic-approach-to-parsing-csv-into-case-classes-in-scala-3/CSV is one of the most common formats for exchanging and importing data between different systems.Thu, 27 Feb 2025 11:51:43 GMThttps://yadavan88.github.io/posts/custom-sbt-task-to-list-direct-dependencies-of-a-project/https://yadavan88.github.io/posts/custom-sbt-task-to-list-direct-dependencies-of-a-project/Recently, at work, there was a requirement to list out the direct dependencies of the our SBT project, something like Bill Of Materials.Tue, 02 Jul 2024 16:11:39 GMThttps://yadavan88.github.io/posts/developing-java-applications-with-scala-cli/https://yadavan88.github.io/posts/developing-java-applications-with-scala-cli/Discover how to easily create small Java projects without the need for Maven or other complex build systems.Mon, 01 Jul 2024 16:59:48 GMThttps://yadavan88.github.io/posts/effective-test-parameterization-with-scalatest-tables/https://yadavan88.github.io/posts/effective-test-parameterization-with-scalatest-tables/Make your tests more readable and maintainable using Table Driven testing in ScalatestThu, 23 Nov 2023 21:08:12 GMThttps://yadavan88.github.io/posts/scala-made-simple-for-beginners-a-gentle-introduction-to-kickstarting-your-scala-learning/https://yadavan88.github.io/posts/scala-made-simple-for-beginners-a-gentle-introduction-to-kickstarting-your-scala-learning/How to leverage Scala-CLI, Scala Toolkit, and Scastie to kickstart your journey into the exciting Scala world.Sun, 01 Oct 2023 18:56:56 GMThttps://yadavan88.github.io/posts/diving-into-zio-test-aspects-streamlining-cross-cutting-concerns-in-testing/https://yadavan88.github.io/posts/diving-into-zio-test-aspects-streamlining-cross-cutting-concerns-in-testing/Empowering Your Testing Strategy: A Close Look at ZIO Test Aspects for Effortless and Effective Handling of Cross-Cutting ConcernsSun, 20 Aug 2023 06:24:51 GMThttps://yadavan88.github.io/posts/mastering-scalatest-exploring-tagging-retry-runner-and-more/https://yadavan88.github.io/posts/mastering-scalatest-exploring-tagging-retry-runner-and-more/How to tag tests, retry flaky tests, runners, compile check etc in ScalaTest frameworkFri, 23 Jun 2023 20:48:18 GMThttps://yadavan88.github.io/posts/unlocking-the-power-of-sbt-a-beginners-guide-to-understanding-not-so-common-features/https://yadavan88.github.io/posts/unlocking-the-power-of-sbt-a-beginners-guide-to-understanding-not-so-common-features/Overcome the complexities of SBT with this guide to advanced features for newbies. Streamline the build process and maximize SBT's capabilities.Fri, 28 Apr 2023 17:23:44 GMThttps://yadavan88.github.io/posts/error-handling-in-cats-effect-part-9/https://yadavan88.github.io/posts/error-handling-in-cats-effect-part-9/Various ways to perform error handling in Cats Effect 3Sun, 23 Apr 2023 13:07:29 GMThttps://yadavan88.github.io/posts/useful-automation-tools-for-scala-development/https://yadavan88.github.io/posts/useful-automation-tools-for-scala-development/This article introduces popular and useful tools for Scala application development, such as GitHub Actions, Scalafmt, Mergfy, Scala Steward, etc.Sun, 19 Mar 2023 16:04:30 GMThttps://yadavan88.github.io/posts/comparing-case-class-instances-using-diffx/https://yadavan88.github.io/posts/comparing-case-class-instances-using-diffx/Compare instances of scala case classes and identify differences with ease.Sat, 04 Mar 2023 13:15:01 GMThttps://yadavan88.github.io/posts/ulid-sortable-unique-identifier/https://yadavan88.github.io/posts/ulid-sortable-unique-identifier/ULID - Sortable Unique Identifier that is better than UUID in many cases. ULID vs UUIDSun, 01 Jan 2023 07:00:44 GMThttps://yadavan88.github.io/posts/easy-integration-testing-with-testcontainer-scala/https://yadavan88.github.io/posts/easy-integration-testing-with-testcontainer-scala/Non flaky integration testing with testcontainers-scalaFri, 02 Dec 2022 06:00:42 GMThttps://yadavan88.github.io/posts/tuple-improvements-in-scala-3/https://yadavan88.github.io/posts/tuple-improvements-in-scala-3/New changes introduced in Scala 3 for TuplesSun, 06 Nov 2022 06:00:42 GMThttps://yadavan88.github.io/posts/compile-time-error-generation-using-inline-in-scala-3/https://yadavan88.github.io/posts/compile-time-error-generation-using-inline-in-scala-3/Implementing compile time validation in Scala 3 using inline modifierMon, 24 Oct 2022 06:15:42 GMThttps://yadavan88.github.io/posts/scala-exceptions-try-trycatch-and-a-caveat/https://yadavan88.github.io/posts/scala-exceptions-try-trycatch-and-a-caveat/How does scala.util.Try differ from try-catch, and where scala Try don't work as expected!Fri, 21 Oct 2022 18:12:17 GMThttps://yadavan88.github.io/posts/lazy-and-eager-computations-in-cats-using-eval/https://yadavan88.github.io/posts/lazy-and-eager-computations-in-cats-using-eval/Controlling evaluations in Cats using EvalSun, 18 Sep 2022 09:26:22 GMThttps://yadavan88.github.io/posts/retrying-cats-effect-failures-with-ease/https://yadavan88.github.io/posts/retrying-cats-effect-failures-with-ease/Learn how to create a customized retry policy with error handling using the Cats-Retry library. Discover the various methods like retryingOnSomeErrors and retryingOnFailures, that enable users to...Wed, 22 Jun 2022 04:30:01 GMThttps://yadavan88.github.io/posts/self-type-in-scala/https://yadavan88.github.io/posts/self-type-in-scala/Different usages of self types in ScalaFri, 10 Jun 2022 16:00:00 GMThttps://yadavan88.github.io/posts/data-validation-and-error-accumulation-using-cats-validated/https://yadavan88.github.io/posts/data-validation-and-error-accumulation-using-cats-validated/Let's see how this is not good in certain scenarios. Assume that we have a simple use-case of transfer of money between two bank accounts. The user input model looks like below and have some...Mon, 30 May 2022 10:16:02 GMThttps://yadavan88.github.io/posts/common-operators-in-cats-effect-3-part-8/https://yadavan88.github.io/posts/common-operators-in-cats-effect-3-part-8/This is the 8th part of the Cats Effect 3 blog series. In this part, let's discuss about the other common operators/methods available in Cats Effect which were not discussed in the previous parts.Thu, 26 May 2022 20:18:40 GMThttps://yadavan88.github.io/posts/synchronisation-and-concurrent-access-in-cats-effect-3-part-7/https://yadavan88.github.io/posts/synchronisation-and-concurrent-access-in-cats-effect-3-part-7/We can mainly use 2 different ways to create a Ref:Wed, 25 May 2022 22:17:39 GMThttps://yadavan88.github.io/posts/cancellation-of-iofiber-in-cats-effect-3-part-6/https://yadavan88.github.io/posts/cancellation-of-iofiber-in-cats-effect-3-part-6/This is the sixth part of Cats Effect series. In the part 4 of this series, we looked at concurrent programming in Cats Effect 3 using Fibers. In this part, we'll look at cancellation of already...Wed, 18 May 2022 21:52:18 GMThttps://yadavan88.github.io/posts/resource-handling-in-cats-effect-3-part-5/https://yadavan88.github.io/posts/resource-handling-in-cats-effect-3-part-5/For example, if we are opening a file to read and forgets to close it when done, this will lead to memory leaks and eventual crash of the application. So, it is very important that these resources...Fri, 13 May 2022 14:45:42 GMThttps://yadavan88.github.io/posts/concurrent-execution-in-cats-effect-using-fibers/https://yadavan88.github.io/posts/concurrent-execution-in-cats-effect-using-fibers/Parallelism is a way by which multiple computations run at the exact same time. This generally utilises multiple processor cores to execute each computation. The methods parSequence, parTraverse...Mon, 09 May 2022 07:49:20 GMThttps://yadavan88.github.io/posts/traversing-cats-effect-ios-part-3/https://yadavan88.github.io/posts/traversing-cats-effect-ios-part-3/In this part, let's look at different ways to combine and traverse multiple IOs.Tue, 03 May 2022 16:02:11 GMThttps://yadavan88.github.io/posts/tools-to-get-started-with-scala-programming/https://yadavan88.github.io/posts/tools-to-get-started-with-scala-programming/Get a taste of Scala for the beginnersSun, 01 May 2022 12:20:08 GMThttps://yadavan88.github.io/posts/common-apis-cats-effect-io-part-2/https://yadavan88.github.io/posts/common-apis-cats-effect-io-part-2/We can also use flatten to avoid nested IOs:Fri, 29 Apr 2022 15:46:10 GMThttps://yadavan88.github.io/posts/cats-effect-3-for-beginners-part-1/https://yadavan88.github.io/posts/cats-effect-3-for-beginners-part-1/Scala Cats Effect tutorialThu, 28 Apr 2022 15:23:25 GMThttps://yadavan88.github.io/posts/scalanative-build-native-applications-in-scala/https://yadavan88.github.io/posts/scalanative-build-native-applications-in-scala/Native application using Scala NativeWed, 27 Apr 2022 15:06:17 GMThttps://yadavan88.github.io/posts/tasty-file-format-in-scala-3/https://yadavan88.github.io/posts/tasty-file-format-in-scala-3/TASTy format captures more detailed informations regarding types and other advanced features in Scala 3. The Scala compiler converts the Scala files into TASTy format(.tasty). This .tasty file is...Sun, 24 Apr 2022 09:21:59 GMThttps://yadavan88.github.io/posts/scala-closures/https://yadavan88.github.io/posts/scala-closures/closure in scalaThu, 14 Apr 2022 21:04:21 GMThttps://yadavan88.github.io/posts/creating-an-sbt-project-template-using-giter8/https://yadavan88.github.io/posts/creating-an-sbt-project-template-using-giter8/Giter8 can be used in two different ways.Wed, 06 Apr 2022 19:40:29 GMThttps://yadavan88.github.io/posts/introduction-to-clear-config-in-scala/https://yadavan88.github.io/posts/introduction-to-clear-config-in-scala/mongo.dbName = "mongoDB" mongo.username = "mongoUser" Wed, 06 Apr 2022 19:40:29 GMThttps://yadavan88.github.io/posts/loading-configs-in-scala-using-pureconfig/https://yadavan88.github.io/posts/loading-configs-in-scala-using-pureconfig/We can create the required case classes to hold the configurations. Pureconfig can then load the config from the files to these config classes. Pureconfig can handle HOCON, JSON and Properties...Wed, 06 Apr 2022 19:40:28 GMThttps://yadavan88.github.io/posts/tagged-types-in-scala/https://yadavan88.github.io/posts/tagged-types-in-scala/Programming languages utilize the concept of Tagged Type to enhance type safety and mitigate common errors. While not a standard library feature, Scalaz, Shapeless, and Scala-Common offer their...Tue, 05 Apr 2022 12:15:01 GMThttps://yadavan88.github.io/posts/duck-typing-in-scala/https://yadavan88.github.io/posts/duck-typing-in-scala/Duck Typing or Structural Typing in ScalaMon, 04 Apr 2022 18:08:25 GMThttps://yadavan88.github.io/posts/different-ways-to-package-a-scala-application/https://yadavan88.github.io/posts/different-ways-to-package-a-scala-application/Different ways to create scala app packaging using scala-cli, sbt-assmbly and sbt-native-packagerSat, 29 Jan 2022 09:36:26 GMThttps://yadavan88.github.io/posts/json-parsing-using-json4s-in-scala-32eeb4516e06/https://yadavan88.github.io/posts/json-parsing-using-json4s-in-scala-32eeb4516e06/Learn how to use Json4s, a widely-used JSON parsing library in Scala that can work with various existing json libraries including Jackson and Play-Json. Discover how to optimize Json4s with...Wed, 01 Jul 2020 20:07:20 GMT