https://www.prakashbhandari.com.np/posts/ Recent content in Posts on Prakash's Blog 👨‍💻 Hugo -- 0.112.4 en Tue, 08 Jul 2025 11:13:05 +1000 https://www.prakashbhandari.com.np/posts/building-local-ai-chatbot-with-ollama-deepseek-r1-and-open-webui/ Mon, 17 Feb 2025 10:28:13 +1100 https://www.prakashbhandari.com.np/posts/building-local-ai-chatbot-with-ollama-deepseek-r1-and-open-webui/ I will be building a local AI chat bot using Ollama, DeepSeek-R1, and the Open WebUI. This approach offers flexibility, privacy, and control over your AI interactions without relying on cloud-based services. Also saves the cost on long term https://www.prakashbhandari.com.np/posts/building-rag-pipeline-for-summarization-and-q-and-a-with-llamaindex-and-openai/ Fri, 10 Jan 2025 10:22:49 +1100 https://www.prakashbhandari.com.np/posts/building-rag-pipeline-for-summarization-and-q-and-a-with-llamaindex-and-openai/ In this post, I will build a basic RAG pipeline using LlamaIndex, featuring both a Q&amp;A Query Engine and a Summarization Query Engine. A Router (`RouterQueryEngine`) will dynamically select the most appropriate query engine to process each query. Here, I’ll walk through how to build a custom RAG pipeline using Python, LlamaIndex, and OpenAI models. https://www.prakashbhandari.com.np/posts/strategy-pattern-in-node-js-a-practical-approach/ Thu, 14 Nov 2024 08:44:29 +1100 https://www.prakashbhandari.com.np/posts/strategy-pattern-in-node-js-a-practical-approach/ The Strategy Design Pattern is a behavioral design pattern in software engineering that enables the dynamic selection of algorithms at runtime, allowing for greater flexibility and adaptability in the application’s behavior. https://www.prakashbhandari.com.np/posts/scaling-kubernetes-jobs-with-keda-triggered-by-amazon-sqs/ Sat, 28 Sep 2024 14:05:05 +1000 https://www.prakashbhandari.com.np/posts/scaling-kubernetes-jobs-with-keda-triggered-by-amazon-sqs/ KEDA stands for Kubernetes (k8s) Event-Driven Autoscaling. With KEDA, you can scale any deployment or jobs in Kubernetes according to the number of events that need to be processed. https://www.prakashbhandari.com.np/posts/supervised-fine-tuning-large-language-models-vertex-ai/ Sun, 15 Sep 2024 21:05:53 +1000 https://www.prakashbhandari.com.np/posts/supervised-fine-tuning-large-language-models-vertex-ai/ Fine-tuning a large language model (LLM) is the process of further training a pre-trained model to perform a specific task or work with a particular dataset. The dataset is often smaller and more specialized (e.g., sentiment analysis, medical language processing). So that the model can perform specific tasks with greater precision and accuracy. https://www.prakashbhandari.com.np/posts/how-to-avoid-the-n+1-query-problem-with-eager-loading/ Wed, 11 Sep 2024 20:07:25 +1000 https://www.prakashbhandari.com.np/posts/how-to-avoid-the-n+1-query-problem-with-eager-loading/ N+1 queries is a performance problem where the application makes multiple database queries in a loop, instead of retrieving the related data with a single query. Where N is the number of queries executed inside the loop https://www.prakashbhandari.com.np/posts/large-multimodal-model-prompting-with-google-gemini/ Sat, 07 Sep 2024 17:26:54 +1000 https://www.prakashbhandari.com.np/posts/large-multimodal-model-prompting-with-google-gemini/ A Large Multimodal Model (LMM) is an Artificial Intelligence (AI) model capable of processing and understanding multiple types of data modalities (such as text, audio, video, images, and potentially others) simultaneously, and providing outputs based on this information https://www.prakashbhandari.com.np/posts/understanding-the-basic-concepts-of-kubernetes-cluster/ Tue, 09 Jul 2024 12:15:39 +1000 https://www.prakashbhandari.com.np/posts/understanding-the-basic-concepts-of-kubernetes-cluster/ As a beginner, understanding a Kubernetes (k8s) cluster might be a little bit complicated. In this blog post, I will try to simplify the basic concepts and components of a Kubernetes (k8s) cluster. https://www.prakashbhandari.com.np/posts/gatling-api-load-test-with-javascript/ Fri, 14 Jun 2024 17:57:55 +1000 https://www.prakashbhandari.com.np/posts/gatling-api-load-test-with-javascript/ Ensuring an application runs smoothly in production is crucial. This post guides you to write and execute a simple Gatling API load test using JavaScript to ensure the stability, speed, scalability, and responsiveness of your application under a given workload. https://www.prakashbhandari.com.np/posts/implementing-logging-using-node-js-elasticsearch-kibana-and-docker/ Mon, 10 Jun 2024 16:23:03 +1000 https://www.prakashbhandari.com.np/posts/implementing-logging-using-node-js-elasticsearch-kibana-and-docker/ Logging and monitoring play a very important role in software development. They help to identify bugs and understand the application&#39;s health. https://www.prakashbhandari.com.np/posts/find-mysql-8-3-keywords-and-reserved-words-used-in-column-names-table-names-procedures-or-functions/ Thu, 04 Apr 2024 18:58:53 +1100 https://www.prakashbhandari.com.np/posts/find-mysql-8-3-keywords-and-reserved-words-used-in-column-names-table-names-procedures-or-functions/ This blog post discuss about on how to find MySQL 8.3 keywords and reserved words used in column names, table names, procedures, or functions in your database https://www.prakashbhandari.com.np/posts/polling-vs-webhooks/ Wed, 13 Mar 2024 18:31:12 +1100 https://www.prakashbhandari.com.np/posts/polling-vs-webhooks/ Sometimes, we need to notify or update another system after a certain interval or upon completing background processing jobs. In such situations, we either use webhooks or polling. Each method has it&#39;s own use cases, pros, and cons. This blog post will explain the differences between polling and webhooks, along with their respective use cases, pros, and cons. https://www.prakashbhandari.com.np/posts/similar-document-search-with-elasticsearch/ Fri, 03 Nov 2023 08:06:33 +1100 https://www.prakashbhandari.com.np/posts/similar-document-search-with-elasticsearch/ In this article, we explored the concept of performing similar document searches with Elasticsearch, with a focus on content similarity using the &#39;more_like_this&#39; query. We discussed the key parameters like min_term_freq, max_query_terms, and min_doc_freq that play a crucial role in fine-tuning the similarity search. https://www.prakashbhandari.com.np/posts/deploy-dot-net-web-application-in-kubernetes-using-kustomize-tool/ Sun, 27 Aug 2023 08:57:55 +1000 https://www.prakashbhandari.com.np/posts/deploy-dot-net-web-application-in-kubernetes-using-kustomize-tool/ In this article, I will explain the basics of how to deploy a .NET Web application in Kubernetes using the Kustomize Tool. I will use Minikube to deploy the app on the local machine. Deploy .NET Web Application In Kubernetes, I have built a Docker image and pushed it to the Docker Hub registry. I will use the same artifacts that were used in that previous article. In this article, I will focus more on how to deploy into Minikube using the Kustomize Tool. https://www.prakashbhandari.com.np/posts/deploy-dot-net-web-application-in-kubernetes/ Sat, 26 Aug 2023 08:57:55 +1000 https://www.prakashbhandari.com.np/posts/deploy-dot-net-web-application-in-kubernetes/ Introduction In this article, I will explain the basics of how to deploy a .NET Web application in Kubernetes. I will use Minikube to deploy the app on the local machine. You can either use an existing .NET Web Application or create a new .NET Web Application and containerize it. I am going to use the app that was created in my previous article. I&rsquo;ve made some minor adjustments for clarity and proper capitalization. https://www.prakashbhandari.com.np/posts/containerize-your-dotnet-web-application-with-docker/ Fri, 25 Aug 2023 08:00:08 +1000 https://www.prakashbhandari.com.np/posts/containerize-your-dotnet-web-application-with-docker/ Dockerizing is the process of packing, deploying, and running applications using Docker containers. Docker is very popular among the developers. In this post, I am going to show you &ldquo;Containerize Your .NET 7.0 Web Application With Docker&rdquo;. for local development. Before that, I will briefly explain what is docker and .NET What Is Docker? Docker is an open source tool that combines your application with all the necessary dependencies and libraries as one portable package (docker image). https://www.prakashbhandari.com.np/posts/how-to-embed-a-json-file-in-a-net-assembly/ Sun, 20 Aug 2023 08:22:58 +1000 https://www.prakashbhandari.com.np/posts/how-to-embed-a-json-file-in-a-net-assembly/ In this article, I will explain what is assembly and how to include the files within your assembly. So, that you can assess those files in runtime. Such as running unit test to access `.json` file to mock API response. https://www.prakashbhandari.com.np/posts/parameter-vs-argument-in-function/ Wed, 02 Aug 2023 12:21:58 +1000 https://www.prakashbhandari.com.np/posts/parameter-vs-argument-in-function/ In this article, I will try to explain the basic difference between parameter and arguments used in the function https://www.prakashbhandari.com.np/posts/how-to-send-slack-notification-with-laravel/ Wed, 17 May 2023 15:15:37 +1000 https://www.prakashbhandari.com.np/posts/how-to-send-slack-notification-with-laravel/ In Laravel, sending notification is very simple. Notification will send the informational messages that will notify users about something has occurred in your application. https://www.prakashbhandari.com.np/posts/how-to-dockerize-a-react-application/ Thu, 05 Jan 2023 13:01:39 +1100 https://www.prakashbhandari.com.np/posts/how-to-dockerize-a-react-application/ Dockerizing is the process of packing, deploying, and running applications using Docker containers. Docker is very popular among the developers. https://www.prakashbhandari.com.np/posts/how-to-test-localhost-web-app-on-your-mobile-phone/ Sun, 01 Jan 2023 11:09:28 +1100 https://www.prakashbhandari.com.np/posts/how-to-test-localhost-web-app-on-your-mobile-phone/ The computer was the main tool used to get information from the Internet. However, recent evolution in smart devices, such are smartphones or tablets enabled mobile users to have the same power that computer had. User can browse websites in their own smart devices via mobile web browsers with the same speed of internet from anywhere. As one of the most dispersed communication tools in the world today, the mobile phone technology has a growing impact on the social and cultural aspect of everyday life of individuals. https://www.prakashbhandari.com.np/posts/create-q-a-with-openai-chatgpt-in-nodejs-and-react/ Thu, 15 Dec 2022 17:40:07 +1100 https://www.prakashbhandari.com.np/posts/create-q-a-with-openai-chatgpt-in-nodejs-and-react/ OpenAI is a software company which develops AI models with different levels of power suitable for different tasks, as well as the ability to fine-tune your own custom models. These models can be used for everything from content generation to semantic search and classification. https://www.prakashbhandari.com.np/posts/how-to-create-custom-laravel-facades-and-use-them-in-your-applications/ Wed, 07 Dec 2022 07:32:54 +1100 https://www.prakashbhandari.com.np/posts/how-to-create-custom-laravel-facades-and-use-them-in-your-applications/ A facade in Laravel is a wrapper around a `non-static` function that turns it into a `static` function. https://www.prakashbhandari.com.np/posts/how-to-embed-github-code-snippets-in-hugo-template-blog-posts/ Mon, 05 Dec 2022 14:31:19 +1100 https://www.prakashbhandari.com.np/posts/how-to-embed-github-code-snippets-in-hugo-template-blog-posts/ In this post, I am going to show you how to embed GitHub code snippets in the Hugo Template blog post in 5 simple steps. In Hugo Template, we enclose code snippet inside backtick ``` Generally, it doesn&rsquo;t highlight the syntax based on what programming language the snippet/code is written in. GitHub Gist code snippets helps us to embed pre-formatted code in markdown. It&rsquo;s best and simplest way to embed pre-formatted code in markdown. https://www.prakashbhandari.com.np/posts/create-laravel-composer-package-from-scratch-and-upload-on-packagist/ Sun, 04 Dec 2022 09:50:12 +1100 https://www.prakashbhandari.com.np/posts/create-laravel-composer-package-from-scratch-and-upload-on-packagist/ This post is about &#39;Create Laravel Composer Package From Scratch and Publish on Packagist&#39; To demonstrate, I will create one Laravel package to convert Hindu Arabic(Nepali) number to English and English number to Hindu Arabic (Nepali) number. Finally, I will publish this package to https://packagist.org/. https://www.prakashbhandari.com.np/posts/how-to-publish-your-own-public-npm-package/ Thu, 01 Dec 2022 12:11:00 +1100 https://www.prakashbhandari.com.np/posts/how-to-publish-your-own-public-npm-package/ This post is about &#39;How to Publish Your Own Public NPM Package?&#39; To demonstrate, I will create one package to convert Nepali number to English number and English number to Nepali number. Finally, I will publish it to npmjs.com. https://www.prakashbhandari.com.np/posts/mock-aws-services-in-local-development-environment-with-localstack-and-nodejs/ Sat, 19 Nov 2022 15:09:02 +1100 https://www.prakashbhandari.com.np/posts/mock-aws-services-in-local-development-environment-with-localstack-and-nodejs/ I was developing and deploying the applications to dedicated servers, on-premises and shared servers. In 2017, I got an opportunity to work with AWS for one of the retail online ecommerce web application. Since then primarily, I have been developing AWS based applications. In my career, I have used many AWS services. Primarily, Route 53, EC2 instances, RDS, SQS, SNS, S3 buckets and so on. Developing and testing applications in the real AWS account is sometimes time-consuming, costly and has dependency on the internet. https://www.prakashbhandari.com.np/posts/javascript-unit-test-with-jest/ Sat, 12 Nov 2022 21:56:57 +1100 https://www.prakashbhandari.com.np/posts/javascript-unit-test-with-jest/ Javascript Unit Test With Jest https://www.prakashbhandari.com.np/posts/changes-in-software-enginering-space/ Fri, 11 Nov 2022 08:31:35 +1100 https://www.prakashbhandari.com.np/posts/changes-in-software-enginering-space/ Software Engineering https://www.prakashbhandari.com.np/posts/api-design-best-practices/ Tue, 24 Aug 2021 11:00:52 +1100 https://www.prakashbhandari.com.np/posts/api-design-best-practices/ <p>I had done presentation within the API development team in my work place on <em><strong>&quot;{API} Design Best Practices&quot;</strong></em> that is consumed by the clients (web app, device app and other third party API consumer). The main purpose of this presentation was to bring ease and smoothness in API development and implementation. I have shared the slide in slideshare.net.</p> https://www.prakashbhandari.com.np/posts/code-review-in-software-development-process/ Tue, 08 Sep 2020 11:00:52 +1100 https://www.prakashbhandari.com.np/posts/code-review-in-software-development-process/ Code Review in Software Development Process https://www.prakashbhandari.com.np/posts/how-to-copy-s3-bucket-objects-from-one-aws-account-to-another-account/ Mon, 23 Sep 2019 12:00:15 +1100 https://www.prakashbhandari.com.np/posts/how-to-copy-s3-bucket-objects-from-one-aws-account-to-another-account/ I had to transfer the S3 bucket objects form one AWS account (Source account) to another AWS account (Destination Account) within the same region. But, transferring the objects form one AWS account to another is not straight forward. According to AWS documentation its transfer the ownership of S3 objects from one account to another AWS account rather than transferring the objects itself. To transfer this ownership we have to go through multiple steps.