https://ruddra.com/Recent content on stdout by ArnabHugo -- gohugo.ioenWed, 24 Dec 2025 13:07:08 +0100https://ruddra.com/architecture-of-beautiful-things-japan/Wed, 24 Dec 2025 13:07:08 +0100https://ruddra.com/architecture-of-beautiful-things-japan/It has been a year since my Japan trip, and I am finally summarizing my thoughts. I put “architecture” in the title because, for me, architecture is not just some lines on a piece of blue paper or diagrams on a whiteboard. It is about the people, the connections, the feelings, and the tiny details that make up the whole.https://ruddra.com/adf-short-polling/Sat, 19 Oct 2024 11:42:55 +0200https://ruddra.com/adf-short-polling/When building data workflows, you might need to poll a RESTful API at regular intervals until a specific condition is met. Azure Data Factory (ADF) makes it easy to implement this using Until, Web, and Wait activities. In this article, we will walk through setting up short polling in ADF. Let’s get started!https://ruddra.com/check-mssql-permissions-with-sqlalchemy-pydantic/Mon, 08 Jul 2024 01:19:00 +0200https://ruddra.com/check-mssql-permissions-with-sqlalchemy-pydantic/When working with different teams and using a database from another team, it’s essential to ensure that your application has the necessary permissions to utilize the database functionalities.In this article, we explored how to use Python with SQL Alchemy to check permissions for an application in a database without creating an entry in the database.https://ruddra.com/add-outlook-shared-mailbox-rules/Sun, 25 Feb 2024 20:10:41 +0100https://ruddra.com/add-outlook-shared-mailbox-rules/When you are using a functional mailbox which gets too many emails in Outlook (older Outlook Application in Windows), it can be distracting. In this article, we are going to see how to disable notifications for shared mailbox. Table of contents  Disable All Notifications Add Rules to Mailbox In Conclusion Disable All Notifications In first step, we need to disable all the notifications for the Outlook.https://ruddra.com/grpc-via-kong/Wed, 17 Jan 2024 00:46:00 +0100https://ruddra.com/grpc-via-kong/We assume you already have a working KongHQ setup and running gRPC services. Otherwise we recommend looking at these following resources: Dev.to: Setup Kong with Docker GitHub: gRPC services example Dev.to: Docker with gRPC API Gateways like KongHQ are essential for exposing internal services outside a firewall, private network, or internally.https://ruddra.com/add-custom-fonts-to-intellijidea/Tue, 07 Mar 2023 13:07:08 +0100https://ruddra.com/add-custom-fonts-to-intellijidea/Even if your have monospace fonts like Operator Mono is installed in your Windows machine, it will not be listed in Settings. In this article I will show how you can add monospace fonts which are not listed in Intellij IDEA settings. Table of contents  First option: install fonts in Administrator mode Second option: copy the fonts to IDEA’s font directory In conclusion References: First option: install fonts in Administrator mode FYI: This option does not work in all cases.https://ruddra.com/how-to-ask-questions-in-stackoverflow/Mon, 12 Dec 2022 11:11:18 +0000https://ruddra.com/how-to-ask-questions-in-stackoverflow/Stack Overflow (SO) is the biggest platform for developers’ questions and answers, yet one-third of the questions remain unanswered. Most often, the feedback I get from people who are answering for the first time is that they are afraid to ask questions or get a lot of downvotes. As a contributor at SO, I feel biased toward the contributors as I see many questions on the platform which are not up to the mark.https://ruddra.com/tfrecords-pandas/Sat, 06 Aug 2022 08:22:02 +0200https://ruddra.com/tfrecords-pandas/The TFRecord (Tensor Flow Records) format is a simple format for storing a sequence of binary records. It is much more efficient storage because it can take up less space than the original data. Aside from that, you can partition TFRecords into multiple files. In this article, we are going to see how you can convert Pandas Dataframe (essentially from a CSV) to TFRecords or vice versa.https://ruddra.com/things-you-should-know-before-starting-a-professional-project/Thu, 28 Jul 2022 17:31:33 +0200https://ruddra.com/things-you-should-know-before-starting-a-professional-project/If you have a CS background, then you are bound to have encounters with professional projects. Before starting one, you should keep a few things in mind; otherwise, working could be a bit difficult. Here are some tips for a jump start in your professional project development. Table of contents  Knowing your stakeholders All IDEs are good IDEs Git is your friend Keeping only one copy of the project Knowing your project environment Checking the test cases Being aware of the culture Not being afraid In conclusion Knowing your stakeholders Before starting the project, it is a good idea to talk with the stakeholders of this project.https://ruddra.com/use-cuda-in-docker/Mon, 11 Apr 2022 10:39:05 +0200https://ruddra.com/use-cuda-in-docker/When I was working with data science project running in Docker, I found that working with huge data can be problematic. Even tools like PyArrow is not fast enough in Docker. But when I debugged the logs, I saw that if I could give it access to NVIDIA Cuda, then it would be much faster.https://ruddra.com/add-search-functionality-hugo/Sat, 29 Jan 2022 00:22:00 +0100https://ruddra.com/add-search-functionality-hugo/Adding search functionality make your website more accessible and usable to the stakeholders. In this article, I am going to share on how you can add this in a static site generated by hugo. Table of contents  Expose JSON output Create layout Build the search page Add lunr.js file Add search functionality Add HTML Add JavaScript In conclusion Expose JSON output In the first step, we need to expose the json output for the files.https://ruddra.com/cloudflare-cache-google-fonts/Sun, 18 Jul 2021 21:00:57 +0600https://ruddra.com/cloudflare-cache-google-fonts/If you are already using Cloudflare, you know that Cloudflare caches fonts (and other contents). But it won’t work if you are using Google font’s CDN. Cloudflare has a detailed guide on how to improve Google fonts performance, but it heavily relies on workers, which might cost a lot of money if your website has a lot of users.https://ruddra.com/alacritty-fish-tmux-vim/Mon, 31 May 2021 22:22:07 +0600https://ruddra.com/alacritty-fish-tmux-vim/Even if you use Vim, it does not mean that you have to code in a plain, stuttering, and boring terminal. In this article, we are going to see how to set up a beautiful interface for coding, which is highly configurable yet highly automated. Without further aduo, let’s go!! Table of contents  Alacritty Fish Shell tmux Vim Save configuration In conclusion Alacritty Alacritty is a GPU accelerated terminal powered by OpenGL.https://ruddra.com/journey-to-vim/Mon, 19 Apr 2021 22:07:44 +0600https://ruddra.com/journey-to-vim/If you are comfortable with your current IDE but still want to try something interesting which might increase your ✌️ productivity ✌️, then you can look into Vim. This article is not setting up your Vim, you will find thousands of articles on Google. Rather, I want to share my thoughts which might motivate(or demotivate) you to use Vim.https://ruddra.com/run-github-actions-within-limits/Fri, 12 Mar 2021 18:51:34 +0600https://ruddra.com/run-github-actions-within-limits/Suppose you are using Github free plan, you are running actions in your private repo and keep exceeding the monthly minutes limit, then this article is going to help you to make optimized usage of the actions minutes in step by step manner. Table of contents  Step one: run workflow on schedule instead of push Step two: run workflow manually only if you push In conclusion Step one: run workflow on schedule instead of push Rather than running the workflow on every push, you can run it in a periodic manner.https://ruddra.com/serverless-and-actions/Tue, 23 Feb 2021 22:47:51 +0600https://ruddra.com/serverless-and-actions/In JAMStack(aka static sites), we use different paid/free services for things like using Disqus for commenting, MailChimp for newsletters etc. These services come with a tradeoff, for example lack of privacy, bloated JavaScript and many more. What if we can build them on our own using a serverless stack, with low to no cost and almost zero maintenance?https://ruddra.com/fix-python-after-brew-upgrade/Wed, 06 Jan 2021 00:25:34 +0600https://ruddra.com/fix-python-after-brew-upgrade/When you run brew upgrade or brew upgrade <package>, all the packages are upgraded or packages linked to that particular package you want to upgrade gets updated. For Python, if the version upgrade is minor, then it should be fine. But major updates break a lot of development setup like, if you are used to develop using virtual environment, then you might have re-install every package.https://ruddra.com/beginners-guide-on-scraping-using-python/Thu, 12 Nov 2020 18:21:22 +0600https://ruddra.com/beginners-guide-on-scraping-using-python/When it comes to web scraping, you have to keep in mind that it is not the coding skill rather cunning observations will get you results. Sometimes the data you get comes in a straight forward way, other times the website does not want you to crawl itself. Either way you will get the data, but it takes time depending on how many puzzles do you have to solve before getting it.https://ruddra.com/hugo-get-perfect-pagespeed-score/Mon, 20 Jul 2020 15:53:45 +0600https://ruddra.com/hugo-get-perfect-pagespeed-score/You will see many Hugo themes boast perfect scores on Google PageSpeed Insights(PSI). To be honest, most of them are not as pretty as others and lack a significant amount of JavaScript(or no JavaScript at all). But, it does not matter anymore. Because you can use any theme(or develop on your own) and get an almost perfect score in PSI if you implement the following steps.https://ruddra.com/hugo-implement-pwa/Sat, 20 Jun 2020 15:53:45 +0600https://ruddra.com/hugo-implement-pwa/We all know or heard of Progressive Web Apps. I wanted to implement it because it enables web applications workable in offline, like a native app. Also it provides content faster by caching them. With help of github actions and gulp, we can easily add it to a static site deployed in Github pages.https://ruddra.com/hugo-add-toc-anywhere/Tue, 09 Jun 2020 16:04:41 +0600https://ruddra.com/hugo-add-toc-anywhere/Hugo provides a built-in module named {{ .TableOfContents }} to generate table of contents. It is pretty handy because it generates the table of content without help of any JavaScript or CSS code. But there is a problem with it, you need to put it inside templates. You can’t render it inside the contents of the markdown file.https://ruddra.com/docker-reduce-build-time-for-data-science-packages/Sun, 24 May 2020 00:36:27 +0600https://ruddra.com/docker-reduce-build-time-for-data-science-packages/If you want to use data science packages like numpy, scipy, pandas etc with your docker container and using pip to install them, then it will take forever to build the images. Because pip compiles the C extended code and that compilation needs a lot of time. For numpy it took me around 4 minutes.https://ruddra.com/django-jwt-auth-app-in-10-mins/Wed, 22 Apr 2020 00:00:00 +0600https://ruddra.com/django-jwt-auth-app-in-10-mins/Let us say, you need an authentication service in a rush, which needs to be cutting edge and uses JWT based authentication. Or you need a stand alone authentication service to be plugged in with other microservices. Do not worry, you can create one in 10 minutes. All you need to have is Python and Docker installed in your machine.https://ruddra.com/aws-codebuild-use-git-tags/Thu, 16 Apr 2020 20:19:01 +0600https://ruddra.com/aws-codebuild-use-git-tags/AWS CodeBuild has nice integration with different Git repository hosting service providers(like GitHub, BitBucket, even amazon’s own CodeCommit etc). Even using WebHook is pretty easy. You can start a build in CodeBuild for every push, pull, PR created, PR merged etc. But it can be bit tricky when it comes to trigger for every tag push only, as it us not a default event type provided by CodeBuild.https://ruddra.com/hugo-use-env-variable-in-md/Fri, 03 Apr 2020 00:00:00 +0600https://ruddra.com/hugo-use-env-variable-in-md/Hugo is a fantastic framework to generate static site from markdown and serve them. Using environment variables in templates is a breeze but using them in markdown files can be a bit tricky. You need to use custom shortcodes as workaround to resolve this issue. Table of contents  What is shortcodes Custom shortcodes Use environment variable in shortcodes By getenv variable By site variable In conclusion What is shortcodes Now the question comes, what is shorcode?https://ruddra.com/project-battle-of-capstones-results/Mon, 30 Mar 2020 00:00:02 +0600https://ruddra.com/project-battle-of-capstones-results/Disclaimer: this article has been generated as part of IBM Data Science Professional Certificate course’s final submission. This report consists of three parts: business problem and data preparation, methodology, visualization and results. In this part, we are going visualize the data, discuss about the results and draw a conclusion.https://ruddra.com/project-battle-of-capstones-methodology/Mon, 30 Mar 2020 00:00:01 +0600https://ruddra.com/project-battle-of-capstones-methodology/Disclaimer: this article has been generated as part of IBM Data Science Professional Certificate course’s final submission. This report consists of three parts: business problem and data preparation, methodology, visualization and results. In this article we are going to describe the methodology we used in step by step: Table of contents  Step one: New York city data with latitude and longitude Step two: New York city data with population Step three: combine step one and step two Step four: collect hospital data from Foursquare Step five: collect hospital bed data from NYS Health Profile Step six: combine step four and step five Step seven: combine data from step three and step six Step eight: add bed and icu per hundred people to data frame Step nine: K-means clustering Step ten: merge cluster labels with dataset Step eleven: see which borough goes to which cluster Step twelve: neighborhoods without hospital Conclusion Step one: New York city data with latitude and longitude We are using requests to get the json data from nyc dataset and stored it in a data frame.https://ruddra.com/project-battle-of-capstones/Mon, 30 Mar 2020 00:00:00 +0600https://ruddra.com/project-battle-of-capstones/Disclaimer: this report has been generated as part of IBM Data Science Professional Certificate course’s final submission. This report consists of three parts: business problem and data preparation, methodology, visualization and results. In this part, we will discuss about business problem and data preparation steps. Table of contents  Business problem Data Approach Data preparation Source code Conclusion Business problem Right now, New York is one of the worst hit state by COVID-19 in USA.https://ruddra.com/hugo-deploy-static-page-using-github-actions/Fri, 06 Mar 2020 00:59:54 +0600https://ruddra.com/hugo-deploy-static-page-using-github-actions/If you are using Hugo to generate static pages, you are familiar with CLI commands which are to build the static pages in your local machine and make push to your <username>.github.io repository. When it comes to using Hugo for blogging, compared to platforms like Medium or WordPress, it is very painful because you do not have any web interface to make changes whenever you want or wherever you want.https://ruddra.com/docker-ship-database-with-container/Fri, 28 Feb 2020 00:53:28 +0600https://ruddra.com/docker-ship-database-with-container/DISCLAIMER: This is not the recommended process. Ideally you should have the database running in a separate container and use network to interact with that container. Usually, we don’t ship application with the database inside the same container. But sometimes we are forced to do that. In this article we are going to see a minimalist way of shipping application with database built-in inside docker container.https://ruddra.com/reactjs-maintain-auth-layer-from-redux-middleware-router/Fri, 14 Feb 2020 01:00:00 +0600https://ruddra.com/reactjs-maintain-auth-layer-from-redux-middleware-router/Maintaining authentication layer in ReactJS can be painful. Back in the old days(even now-a-days), you needed to override every componentDidMount method in class based components to see if the user is authenticated. In the latest ReactJS, there are hooks(specially useEffect) where you need to write these checks. Either way, some codes will be redundant.https://ruddra.com/aws-codebuild-use-database/Fri, 31 Jan 2020 19:08:29 +0600https://ruddra.com/aws-codebuild-use-database/AWS CodeBuild is an extraordinary tool for building your code. Recently I have been using it to build projects and store docker images in AWS ECR. During those CodeBuild processes, I needed Database for running tests. As the need of the Database was for a limited time and I didn’t want to pay extra for it(that is why I did not use AWS RDS), I decided to create database using docker inside CodeBuild.https://ruddra.com/networking-with-docker/Wed, 15 Jan 2020 00:50:56 +0600https://ruddra.com/networking-with-docker/We already know that Docker is used for containerization. But networking in docker makes it even better tool for deployment. You can make standalone deployments in containers and communicate between them, or make containers act as host, or even assign mac addresses to containers and act them as devices. It does not matter which host machine you are in, you can make dockers communicate in-between them.https://ruddra.com/implement-newsletters-using-staticman/Thu, 12 Dec 2019 00:12:08 +0600https://ruddra.com/implement-newsletters-using-staticman/Collecting data in static sites or serverless sites(with POST request) is a hassle because you don’t have a server to receive POST requests and store data. But Staticman is here to help. It will enable users to make POST requests, that will allow you to gather these data. In this article, I am going to tweak Staticman a little to implement newsletter subscription.https://ruddra.com/docker-volume-entrypoint-ignorefile/Sat, 09 Nov 2019 00:56:04 +0600https://ruddra.com/docker-volume-entrypoint-ignorefile/Have you worked with Docker before? Do you think you have trouble with it, like when you are developing an application, you need to build every time to see the results, or thinking of the best way to load data in DB, or may be you are annoyed because there are lots of markdown files, screenshots etc that are taking a lot of space in your container.https://ruddra.com/docker-compose-arg-env/Sat, 09 Nov 2019 00:00:00 +0600https://ruddra.com/docker-compose-arg-env/Imagine, you have some microservices and you want to use API from one service to another, how can you do that if all of them are running in different docker container? Docker Compose has a solution for you. Suppose you want to deploy a project in test, stage and production environment with same Dockerfile for all of them through a single Dockerfile.https://ruddra.com/docker-write-dockerfile-and-reduce-size-build-time-for-image/Fri, 08 Nov 2019 00:15:22 +0600https://ruddra.com/docker-write-dockerfile-and-reduce-size-build-time-for-image/For the past couple of years, I have been creating Dockerfile for different projects. based on those experiences I am going to share some tips on writing docker files to communication between containers. _FYI: before reading this article, please read the article from official docker blog site to learn about best practices for creating Dockerfile.https://ruddra.com/manjaro-kde-plasma-workspace-visual-improvements/Wed, 30 Oct 2019 02:40:51 +0600https://ruddra.com/manjaro-kde-plasma-workspace-visual-improvements/For the past couple of days, I am testing out Manjaro linux. Most of the time, I was working with KDE Plasma Edition. In my opinion, it is the most beautiful desktop environment from Manjaro official distributions. I am a fan of Ubuntu Unity workspaces and wanted to use similar features in KDE plasma as well.https://ruddra.com/manjaro-tricks-and-tips/Mon, 14 Oct 2019 01:32:28 +0600https://ruddra.com/manjaro-tricks-and-tips/Recently I tried out Manjaro operating system, and did some experiment with XFCE and KDE desktop environments. Here I am going to share some tips and tricks to setup Manjaro in you machine. Now, let us dive in. Table of contents  Copy bash history to ZSH Backlight On using terminal Install visual studio code(VS Code) Wireless headphone muddy sound fix GPG verify key error fix Package managers AUR or build your own packages Pacman Snap Bootstrap manjaro setup IOS/Android file copy Rows and columns in workspaces Backup and restore Copy environment to other machine Copy bash history to ZSH Lets say you are using bash for a long time, and now you have installed ZSH.https://ruddra.com/django-store-url-argument-through-middleware/Wed, 02 Oct 2019 22:06:21 +0600https://ruddra.com/django-store-url-argument-through-middleware/Lets say you have an API which is being used by many stores. Now for a specific store ABC, they want to have a different response format. So how would you make this implementation generic without making different views for store ABC? Simple, use middleware. Table of contents  How it works Usage Another usage scenario How it works First update the url like this:https://ruddra.com/solr-docker-plugin-install/Tue, 01 Oct 2019 00:16:34 +0600https://ruddra.com/solr-docker-plugin-install/Adding a plugin to Solr is relatively simple process. In this article, we are going to see how to add a plugin by creating a jar file using a docker container, then add that to a Solr which also runs inside docker container. Table of contents  Building the plugin Workflow for building the plugin Example of solr image Explanation Run solr Without docker-compose With docker-compose Configure plugin inside docker In conclusion Building the plugin Workflow for building the plugin Steps for building a Solr plugin inside Solr docker file are like this:https://ruddra.com/vs-code-remote-docker-development/Tue, 06 Aug 2019 18:54:21 +0600https://ruddra.com/vs-code-remote-docker-development/VS Code is the most popular IDE at the moment. You can use it for developing applications in almost any programming language. In addition to that, you can do remote development in Docker,VM etc. In this post, we are going to discuss about how to use Docker Environment in VS Code.https://ruddra.com/django-serialize-foreignkey-m2m-property-instance-fields/Thu, 13 Jun 2019 23:12:26 +0600https://ruddra.com/django-serialize-foreignkey-m2m-property-instance-fields/Django’s serialization framework provides a mechanism for “translating” Django models into other formats. Usually they are in json output, yaml output, XML output, GeoJSON output etc text based formats. Here, we are going to supercharge these serializers to do more things, even try to render properties method and instance method.https://ruddra.com/deploy-django-subpath-openshift/Wed, 24 Apr 2019 20:36:44 +0600https://ruddra.com/deploy-django-subpath-openshift/When you are using OpenShift, you will be using routes to expose a route from a service. Let’s say you want to expose a path in example.com/dummy. When you do that for a django application(without any reverse proxy server), it usually becomes a problem, because the sub directory does not work well with Django’s urls.https://ruddra.com/install-mysqlclient-macos/Fri, 19 Apr 2019 23:59:43 +0600https://ruddra.com/install-mysqlclient-macos/Connecting to MySQL from Python in MacOS is a very problematic and painful process. In this post, we are going to see how to install MySQL and connect a Python application to it using mysqlclient. Table of contents  Step one: install Homebrew Step two: install MySQL Step three: install MySQL-Connector-C Step four: install XCode-Select Step five: install OpenSSL Step six: unlink MySQL and link MySQL-Connector-C Step seven: install mysqlclient Step eight: link MySQL back again Step nine: add mysqlclient in virtual env(optional) In conclusion Step one: install Homebrew You need to install Homebrew in you local machine.https://ruddra.com/python-proxy-object/Fri, 12 Apr 2019 01:06:22 +0600https://ruddra.com/python-proxy-object/Lets say you have been using a class named ClassA, objects created from that class has been used in many places. Now you have a requirement that you need to make a simillar class ClassB, which has almost simillar functionality. Objects of ClassA and ClassB will have simillar method signatures, and could be swapable.https://ruddra.com/aws-boto3-useful-functions/Sat, 06 Apr 2019 01:49:10 +0600https://ruddra.com/aws-boto3-useful-functions/Today, I am going to write about few useful snippets/functionalities which I have used for Amazon S3 or any S3 compatible storage using Boto3 and Django Storage. FYI, this post focuses on using S3 with Django. So without further ado, let us begin. Table of contents  Configuring S3 Using S3 which it does not belong to AWS Serve S3 in different domain(through cloudFront or varnish) Create new bucket See all buckets Change access control to a bucket Delete objects from a bucket(also bucket itself) Use different folders when storing media and static contents Make ‘collect static’ faster Check ACL status In conclusion Configuring S3 When using django storage, you don’t need to put configurations like ~/.https://ruddra.com/django-save-unknown-object-in-database/Sun, 10 Feb 2019 00:38:04 +0600https://ruddra.com/django-save-unknown-object-in-database/Implementing the procedures mentioned here in a production system may cause security issues in the future. I wrote this article as a hack. Suppose you are dealing with a poorly written API, which returns different type of objects at different scenarios. For example, sometimes it returns a string(ie. abcd), sometimes it returns a list(ie.https://ruddra.com/django-model-linked-list/Sat, 26 Jan 2019 14:58:58 +0600https://ruddra.com/django-model-linked-list/Linked list is a data structure where each object has points to next. In django, linked list can provide an interesting solution when it comes to custom ordering/grouping issues. Lets think of an example like this= you are making a blog site, and you have made a Post Model like this:https://ruddra.com/django-custom-user-migration-mid-phase-project/Thu, 03 Jan 2019 02:00:00 +0000https://ruddra.com/django-custom-user-migration-mid-phase-project/Every now and then I see some questions pop up in Stack Overflow with title: ValueError: Related model ‘app.User’ cannot be resolved This is a very common issue and pops up when the user tries to run the migration. So, lets talk more about what is this problem and how can we solve it.https://ruddra.com/tdd-drf-factory-boy-faker/Sat, 22 Dec 2018 02:00:00 +0000https://ruddra.com/tdd-drf-factory-boy-faker/“I’m not a great programmer; I’m just a good programmer with great habits.” ― Kent Beck Test Driven Development - in short TDD is a practice where you write the tests first then the actual code. It makes the code less vulnerable and it makes a testable software rather than writing the software, then test it.https://ruddra.com/moving-to-hugo/Fri, 21 Dec 2018 23:00:00 +0000https://ruddra.com/moving-to-hugo/“The Only Thing That Is Constant Is Change -” ― Heraclitus This blog site has changed quite a lot since the begining. I initially developed it as a Django application. It was part of my learning process, and I hosted it in a private shared server. But unfortunatly, good days came to an end, I had to give up that hosting for costing.https://ruddra.com/control-application-flow-from-redux-middleware/Fri, 12 Oct 2018 17:25:38 +0000https://ruddra.com/control-application-flow-from-redux-middleware/While developing application in ReactJs with Redux and React Router 4, what I felt is that, there is no direct relationship between application’s state and routing. We needed to create those connections inside Components. In each component, we needed to check application state and based on that we made decisions where to go next(if needed).https://ruddra.com/migration-from-ghost-1-2-to-2-2/Thu, 11 Oct 2018 14:21:22 +0000https://ruddra.com/migration-from-ghost-1-2-to-2-2/This post is no longer valid as I have moved to Hugo 😄 Table of contents  Verdict Verdict I have just migrated the site from Ghost 1.25.2 to 2.2. As every growth comes with some inevitable pain, thus you can expect a lot of things are broken. Here all the URLS have been updated.https://ruddra.com/openshift-python-pipeline-deployment/Sun, 12 Aug 2018 16:45:42 +0000https://ruddra.com/openshift-python-pipeline-deployment/The last post was about defining the pipelines. Now it is time to execute them. Also, at the end, we are going to show how to integrate webhook in your repository, so that for a specific event(like Push, Pull request merge etc) it will trigger the pipelines to automatically deploy the latest code to servers.https://ruddra.com/openshift-python-jenkins-pipeline-two/Sat, 11 Aug 2018 20:41:04 +0000https://ruddra.com/openshift-python-jenkins-pipeline-two/In previous article, we covered step 1-5 which would prepare the code and make sure it is ready to be deployed to OpenShift. Now we are going to use the next steps to deploy that code. Table of contents  Step 6: create build configuration in OpenShift Step 7: build image Step 8: deploy to OpenShift in DEV Step 9: promote image to STAGE Step 10: deploy to OpenShift in STAGE Step 11: scale in STAGE Conclusion Step 6: create build configuration in OpenShift After Step 5, we will have a nice compressed file containing what we need for building our app in openshift.https://ruddra.com/openshift-python-jenkins-pipeline-one/Sat, 11 Aug 2018 19:41:04 +0000https://ruddra.com/openshift-python-jenkins-pipeline-one/Pipeline is a set of instructions, which will be executed as per given sequence and produce a output. Jenkins Pipeline is simply writing these instructions in Jenkins. These pipelines can be written in Groovy. In previous post we have defined deployment structure and made necessary preparations for deployment of a python+gunicorn+nginx+jenkins based project.https://ruddra.com/openshift-python-pipeline-preparation/Sat, 11 Aug 2018 15:09:01 +0000https://ruddra.com/openshift-python-pipeline-preparation/Deploying a Python application to OpenShift is fairly easy. Write a Dockerfile and run oc new-app /path/to/Dockerfile, that’s it!! But if you want implement a full fledged modern CI/CD using Jenkins and openshift, you need to do little more than that. So let’s dive into it. We will explain about the whole process in three articles:https://ruddra.com/privacy/Sat, 11 Aug 2018 00:00:00 +0600https://ruddra.com/privacy/It is ruddra.com’s policy to respect your privacy regarding any information we may collect while operating our website. This Privacy Policy applies to https://ruddra.com (hereinafter, “us”, “we”, or “https://ruddra.com”). Table of contents  Effective date Cookie Policy Email Policy User Information Policy Third Party Privacy Policy External Usage Children Policy Log Policy Contact Us Effective date Effective date of this privacy policy is August 11, 2018.https://ruddra.com/django-openshift-pipeline/Sun, 22 Jul 2018 17:51:20 +0000https://ruddra.com/django-openshift-pipeline/Using Jenkins pipeline, you can easily automate your deployments in OpenShift. In this post, we are going to use this powerful tool to deploy a Django project. But before we start, one thing I need to mention is that, this project has been tested on in Minishift 1.2.0, OpenShift v3.9.0 and Kubernetes v1.https://ruddra.com/boilerplate-django-with-angularjs-powered-by-webpack2-yarn-docker-drf/Sun, 29 Apr 2018 10:00:52 +0000https://ruddra.com/boilerplate-django-with-angularjs-powered-by-webpack2-yarn-docker-drf/This post is deprecated. Use it at your own risk Simple and clean boilerplate for using django and angular 1.x together, with basic structure comes built-in. Table of contents  Tech Stack Prerequisite Setup frontend Setup docker Setup backend Usage Local settings sample Screenshots Tech Stack Python3 Django 1.11.6, Django Rest Framework Webpack 2 JavaScript(ES6)/AngularJS 1.https://ruddra.com/migrating-from-ghost-11-to-1-xx-using-docker/Sun, 29 Apr 2018 07:37:24 +0000https://ruddra.com/migrating-from-ghost-11-to-1-xx-using-docker/Ghost had formulated lots changes when they released version 1.XX. So, when you try to upgrade from 0.11 to 1.XX, you can follow the following steps. Table of contents  Steps Export backup Rename old content Copy to a seperate directory Create cocker compose file Start docker containers Setup ghost admin Import file Change Theme Regarding updating handlebar files In conclusion Steps FYI, you can also use the following steps if you want run Ghost in Docker and import your existing settings.https://ruddra.com/bandarban-nafakhum-amiakhum-satbhaikhum/Fri, 27 Apr 2018 16:18:35 +0000https://ruddra.com/bandarban-nafakhum-amiakhum-satbhaikhum/Bandarban is a heaven for trekking for Bangladeshi people. There are lots of hills around the district, and there are some amazing waterfall as well. I visited three amazing waterfalls named Nafakhum, AmiaKhum, Satbhaikhum. Khum means waterfall in Marma language. Table of contents  Thanchi Remakri Nafakhum Amiakhum Padma Jhiri Tindu Thanchi captured on the way to Thanchihttps://ruddra.com/bandarban-journey-to-keokaradong/Thu, 26 Apr 2018 16:26:30 +0000https://ruddra.com/bandarban-journey-to-keokaradong/Bandarban is a beautiful district of Bangladesh. You will see lots of amazing mountains which are part of Arakan range. Keokradong is the 3rd highest pick**(after Tajingdong and Saka Haphong, references are here) of Bangladesh, which is situated in Bandarbans. So today I am going to share my experience visiting there.https://ruddra.com/journey-to-bhutan/Wed, 25 Apr 2018 18:20:01 +0000https://ruddra.com/journey-to-bhutan/I went to Bhutan on September, 2015. It was my best trip ever, really ever. From Dhaka, we went there by DRUK AIR. We(me and two of my friends) landed in Paro Airport. It was really wonderful airport, it was small but clean and organised. After getting out of the plan, a chilling air struck us, and instantly we knew, we gonna like this country.https://ruddra.com/deploy-django-to-openshift-3/Sat, 24 Feb 2018 13:32:11 +0000https://ruddra.com/deploy-django-to-openshift-3/If you want to use OpenShift for deploying Django, you can follow this post and simply do that. You don’t need to learn Kubernetes. We will use docker file only. No other fancy stuff. Also, before starting, I am also hoping you are little bit familiar with OpenShift 3 and oc tools.https://ruddra.com/vs-code-for-python-development/Wed, 26 Jul 2017 16:13:17 +0000https://ruddra.com/vs-code-for-python-development/Visual Studio Code is an editor developed by Microsoft. I have been using this editor for Python development for sometime now. Previously I have been using PyCharm Community Edition for development, but I had to switch to an editor which was less resource consuming than PyCharm, since I have been using VS Code.https://ruddra.com/ubuntu-protip-launching-chrome-apps-at-startup/Wed, 19 Jul 2017 16:12:47 +0000https://ruddra.com/ubuntu-protip-launching-chrome-apps-at-startup/Chrome apps are really handy when you don’t want to overhaul your system with apps for every little purpose. Starting those apps at startup can be used instead of manually starting them every time you want to use them. Like starting the messenger at startup of the system. To do that.https://ruddra.com/play-with-pillow/Sun, 28 May 2017 14:35:59 +0000https://ruddra.com/play-with-pillow/Who hasn’t heard PIL? It’s an image processing library made by python (Python Image Library). Pillow is an extension of it. Table of contents  Installation Resize image Crop image in box shape Resize image and crop in center to convert it to a fixed size Paste image over a background image Draw text over an image Adjast brightness of an image Adjast color of an image Save the PIL image in django models or serve as django file Convert to webp Convert to JPG/JPEG And Many more Installation So installing pillow is really easy:https://ruddra.com/python-selenium-with-phantomjs-to-capture-screenshots/Tue, 21 Mar 2017 15:45:11 +0000https://ruddra.com/python-selenium-with-phantomjs-to-capture-screenshots/This article is deprecated as PhantomJs has been deprecated from Selenium as driver. PhantomJS is a headless WebKit script-able with a JavaScript API. It has fast and native support for various web standards: DOM handling, CSS selector, JSON, Canvas, and SVG. And Selenium is a portable software-testing framework for web applications.https://ruddra.com/documentation-of-django-encrypt-file/Fri, 24 Feb 2017 18:52:20 +0000https://ruddra.com/documentation-of-django-encrypt-file/This is no longer maintained. Use it at your own risk. Django Encrypt File is a simple Library which can be used to encrypt uploaded files and store them. Table of contents  Installation Basic usage Using in the view Advance example(with models) Model defination Encrypt view Decrypt view Notes Installation Use pip to install it:https://ruddra.com/docker-do-stuff-using-celery-using-redis-as-broker/Mon, 14 Nov 2016 15:43:31 +0000https://ruddra.com/docker-do-stuff-using-celery-using-redis-as-broker/In previous two posts, we have deployed Django with Postgres, Nginx, now its time to do some async stuff using Celery. In this post, I will do the magic tricks first, explain them later. Table of contents  Add ‘Celery’ to django Make a simple async task Explanations Need proof that this works Add ‘Celery’ to django To add celery, we need make a container for celery.https://ruddra.com/serve-static-files-by-nginx-from-django-using-docker/Wed, 02 Nov 2016 17:24:56 +0000https://ruddra.com/serve-static-files-by-nginx-from-django-using-docker/This is more of a follow up post of my previous article. Before I start, I am assuming you have successfully deployed django using docker and nginx, but having some problems serving static files. Table of contents  Steps Update Steps No worries, it is easy. Just follow these steps: 1. In your django settings.https://ruddra.com/docker-django-nginx-postgres/Tue, 09 Aug 2016 13:47:22 +0000https://ruddra.com/docker-django-nginx-postgres/This post is based on this article on docker documentation. I will be extending this post by serving django+gunicorn using Nginx, also I will using Postgresql docker container to use it as database. Table of contents  Steps Create django project Add ‘requirement.pip’ Create ‘Dockerfile’ Install ‘docker-compose’ Add configuration to ‘docker-compose.https://ruddra.com/make-apple-notifications-from-rss-feed-using-python/Tue, 26 Jan 2016 13:56:44 +0000https://ruddra.com/make-apple-notifications-from-rss-feed-using-python/Today we are going to see how make OSX notifications from RSS Feed of any website using Python. So first of all, let us see how to make a simple notification. We are going to use AppleScript for this. Table of contents  Command for notification in AppleScript Start coding for application Integrate AppleScript in application In conclusion Command for notification in AppleScript Go to terminal and Type:https://ruddra.com/make-csv-file-using-mysql-and-python/Sun, 10 Jan 2016 15:21:42 +0000https://ruddra.com/make-csv-file-using-mysql-and-python/In this blog, I am going to show how to develop an application by which we can make .csv files from MySQL database using Python. Table of contents  Steps SQL command Run SQL command in python To csv In conclusion Steps SQL command Now, let us start by getting data from Database.https://ruddra.com/django-1-7-scrapy/Sun, 03 Jan 2016 15:45:51 +0000https://ruddra.com/django-1-7-scrapy/This post is deprecated. Use it at your own risk. Today I am going to share how to use Scrapy and Django together to crawl to a website and store scraped data to Database using Django. Table of contents  Project Setup: Django Project Setup: Scrapy Screenshots Project Setup: Django First, let us build a Django application using the following commands.https://ruddra.com/make-a-blog-using-django-part-2/Thu, 17 Sep 2015 21:29:09 +0000https://ruddra.com/make-a-blog-using-django-part-2/This post is now deprecated. Please follow the official tutorial for creating your first django application. From previous post, you have configured and ran django, also added admin site to the django. To view the working source of this tutorial, check here at: https://github.com/ruddra/myblog/ Table of contents  Create entry in database Templates Separating views Create entry in database Now click on the myblog section and click add to add new blog.https://ruddra.com/make-a-blog-using-django-part-1/Thu, 17 Sep 2015 21:29:08 +0000https://ruddra.com/make-a-blog-using-django-part-1/This post is now deprecated. Please follow the official tutorial for creating your first django application. “Making a blog using django” - is probably the most made tutorial of Django. This post is no different. But I made this in my own way using some of django’s built-in features so that less coding is required and making it more understandable with minimum packages to use.https://ruddra.com/change-column-headers-django-tables2/Thu, 17 Sep 2015 21:15:04 +0000https://ruddra.com/change-column-headers-django-tables2/Django Tables2 is a package which displays table directly from queryset. It shows column header based on object’s attribute name. But if someone wants to override it, how can he/she do that? Here is a easy solution. Table of contents  Model class Table class View class Model class Suppose we have a model class like this:https://ruddra.com/dynamically-constructing-filters-based-on-string-input-using-sqlalchemy/Thu, 17 Sep 2015 21:15:04 +0000https://ruddra.com/dynamically-constructing-filters-based-on-string-input-using-sqlalchemy/Here I am going to write a dynamic filter. This filter is made for python 3. It will take query or model class and filter condition as input, It will return filtered query based on those filter condition. This is constructed using this Stack Overflow answer. Table of contents  Function Usage Function from sqlalchemy import create_engine from sqlalchemy.https://ruddra.com/how-to-configure-django-tornado-in-pycharm-community-edition/Thu, 17 Sep 2015 21:11:18 +0000https://ruddra.com/how-to-configure-django-tornado-in-pycharm-community-edition/I think, Pycharm is THE best IDE for developing python. But unfortunately, the professional edition is not free. But community edition is good enough for doing debugging, integrating GIT etc. Normally its easy to use the community edition for django and tornado’s debugging/running if you know how to configure. Table of contents  Django configuration Tornado configuration PyCharm 2016 Django configuration For django’s configuration, there is 5 easy steps:https://ruddra.com/some-useful-tools-function/Thu, 17 Sep 2015 20:56:54 +0000https://ruddra.com/some-useful-tools-function/This post is deprecated as its based on Django 1.6 mostly. I am going to share some useful Django tools/functions which are very useful(were for me atleast) to get things done. Table of contents  Return any model class and its properties Distance calculator Dynamic relational operations Get week list Get month list Return any model class and its properties This method will return any model class if you have the name of the class.https://ruddra.com/working-with-formset/Thu, 17 Sep 2015 17:49:58 +0000https://ruddra.com/working-with-formset/This post is deprecated and may not be useful. As django documentation says: A formset is a layer of abstraction to work with multiple forms on the same page. It can be best compared to a data grid. So here I am going to show a very simple django formset implementation example.https://ruddra.com/sample-ajax-get-post-request-in-django/Thu, 17 Sep 2015 17:29:45 +0000https://ruddra.com/sample-ajax-get-post-request-in-django/Let us make a test scenario here: A dropdown field which on change we are going to send a Get/Post request to Django and return response. Let us start coding…. Table of contents  HTML code Create an Ajax request Handle AJAX request in django view In conclusion HTML code <select id="select_dropdown"> <option value="joshua">joshua</option> <option value="peter">peter</option> .https://ruddra.com/using-intellijidea-within-an-exisiting-virtualenv/Thu, 17 Sep 2015 17:24:52 +0000https://ruddra.com/using-intellijidea-within-an-exisiting-virtualenv/To add a virtual environment to Intellij IDEA, You have added Python from virtualenv folder to project SDK. Which means that virtualenv directory’s python( for example venv/bin/python2.7) needs to be added to Intellij IDEA project path. Table of contents  For PyCharm >= 2018 For Pycharm 2016 and later For older versions For PyCharm >= 2018 As per documentation from Pycharm:https://ruddra.com/implementation-of-forgot-reset-password-feature-in-django/Tue, 21 Oct 2014 18:13:05 +0000https://ruddra.com/implementation-of-forgot-reset-password-feature-in-django/Django has its own implementation for reset/forgot password for its admin site. We are going to use that code as reference to implement similar feature for a non admin-site authentication page. Although there are tons of good packages which will allow user to use their password resetting system. But if the system isn’t too complex and doesn’t need such authentication plugins, then reusing the django’s very own implementation can be a good option.https://ruddra.com/perodic-tasks-by-celery-3-1-example/Mon, 01 Sep 2014 18:03:07 +0000https://ruddra.com/perodic-tasks-by-celery-3-1-example/This post is deprecated. It is no longer compatible with latest Celery versions. I am assuming you have read celery docs from Celery Documentation. As we know, celery can be used as a scheduler for executing asynchronous tasks in periodic cycles. Here I am going to share to do that with a code example.https://ruddra.com/syncdb-vs-migration/Fri, 04 Jul 2014 17:34:00 +0000https://ruddra.com/syncdb-vs-migration/While surfing through Stack Overflow, I find a common question among Django users that, database not working properly; fields attribute changed, yet not working etc. Clearly because most of them used syncdb after altering fields. Well, lets make some things clear here about django syncdb and migration. Table of contents  What is ‘syncdb’ What is ‘migration’ What if you mess-up in production server with ‘syncdb’ and ‘migration’ What is ‘syncdb’ syncdb is a command which is executed in django shell to create tables for first time for apps which are added to INSTALLED_APPS of settings.https://ruddra.com/richtext-editor-in-django-admin-site/Tue, 29 Apr 2014 10:44:30 +0000https://ruddra.com/richtext-editor-in-django-admin-site/I wanted to add a rich text editor within django administrator. It is not that hard to add a rich text editor, as there are editors like CKeditor, Tinymce. Table of contents  Download ckeditor file Writing forms.py Generated text Download ckeditor file There are multiple plugins for django like django-ckeditor or django-tinymce etc.https://ruddra.com/django-translation-using-po-file/Mon, 16 Dec 2013 10:51:47 +0000https://ruddra.com/django-translation-using-po-file/This post is deprecated. Please follow the official documentation. When comes to using multiple languages in one single site, Django is very handy. You can use .po file to do your translation for you. Table of contents  How to do that How to do that Process is very simple: First create .https://ruddra.com/about/Tue, 01 Oct 2013 00:00:00 +0600https://ruddra.com/about/Hello World! I am Arnab Shil, a DevOps Engineer at Rabobank, Netherlands. I specialize in building scalable architectures, writing maintainable code, and integrating security and FinOps into the heart of the development lifecycle. Currently, I am focused on ensuring BCBS 239 compliance across the Global Data Platform. By providing frameworks to enforce these regulatory norms, I help secure and streamline our data products.https://ruddra.com/contact/Tue, 01 Oct 2013 00:00:00 +0600https://ruddra.com/contact/I have a social presence on all major social media such as X ( or Twitter), Linkedin, etc. You can contact me via email as well. Table of contents  My email address My Whatsapp Before contacting via Email or Whatsapp For Aniruddha My email address Contact me at @ignoreme-.com .https://ruddra.com/license/Tue, 01 Oct 2013 00:00:00 +0600https://ruddra.com/license/Creative Commons Attribution-ShareAlike 4.0 International Public License Copyright (c) 2026 Arnab Shil (@ignoreme-.com ). By exercising the Licensed Rights (defined below), You accept and agree to be bound by the terms and conditions of this Creative Commons Attribution-ShareAlike 4.0 International Public License (“Public License”). To the extent this Public License may be interpreted as a contract, You are granted the Licensed Rights in consideration of Your acceptance of these terms and conditions, and the Licensor grants You such rights in consideration of benefits the Licensor receives from making the Licensed Material available under these terms and conditions.