https://www.kvdm.dev Observe existence, drink tea, cognize. 31 May 2026 00:00:00 +0000 https://www.kvdm.dev/articles/aiomonitor-integration-with-litestar-uvicorn-fastapi/ As aiomonitor primiraly developed for observing aiohttp internal work, i didn't find an example of wrapping up an ASGI application to monitor async tasks. In my case, an app is built on Litestar framework, which allows running ASGI app with uvicorn... 25 Jan 2024 00:00:00 +0000 https://www.kvdm.dev/articles/aiomonitor-integration-with-litestar-uvicorn-fastapi/ https://www.kvdm.dev/articles/apache-superset-architecture-and-features-infographic/ The first time i installed Apache SuperSet i realized how heavyweight it is. There are two main docker compose files to run, containing either 10 or 6 services, that leads to tons of settings. 7 Dec 2023 00:00:00 +0000 https://www.kvdm.dev/articles/apache-superset-architecture-and-features-infographic/ https://www.kvdm.dev/articles/astrology-elements-distribution-over-a-few-years-visualization-pandas-seaborn/ The four elements Fire, Water, Earth and Air describe an object with a set of their own characteristics, such as being active, perceptive, structured, versatile. By understanding all the other characteristics and the specific composition of elements,... 18 Sep 2023 00:00:00 +0000 https://www.kvdm.dev/articles/astrology-elements-distribution-over-a-few-years-visualization-pandas-seaborn/ https://www.kvdm.dev/articles/explore-and-visualize-the-parser-events-and-performance-pandas-seaborn-klib-adtk/ First, i was going to start writing an article about researching Plotly community and changed my mind after a short while in favor of exploring how a multithreaded parser that i've implemented discourse-parser for the purpose of whether getting the... 10 Aug 2023 00:00:00 +0000 https://www.kvdm.dev/articles/explore-and-visualize-the-parser-events-and-performance-pandas-seaborn-klib-adtk/ https://www.kvdm.dev/articles/resizing-lvm-based-swap-volume-on-kubuntu-lack-of-ram/ After updating the laptop OS from Kubuntu 20.04 to 22.04 i started experiencing RAM issue i didn't have before on 20.04. The laptop has 8GB Ram and my normal workload is using PyCharm, Vivaldi, Alacritty, Typora, Obsidian. All of them consume less... 4 Jun 2023 00:00:00 +0000 https://www.kvdm.dev/articles/resizing-lvm-based-swap-volume-on-kubuntu-lack-of-ram/ https://www.kvdm.dev/articles/research-moderators-activity-in-the-streamlit-community-dask-pandas-seaborn/ I'm curious how well the Streamlit company develops its community . To make it better, a lot of questions from very beginners to advanced users have to be answered or, at least, responded to in a reasonable time. Fortunately, the community forum is... 29 Mar 2023 00:00:00 +0000 https://www.kvdm.dev/articles/research-moderators-activity-in-the-streamlit-community-dask-pandas-seaborn/ https://www.kvdm.dev/articles/telegram-group-leaders-research-pandas-seaborn-missingno/ Due to i'm a member of a Telegram group chat i'd like to research about the most active users there by plotting them in different perspectives: 1 Mar 2023 00:00:00 +0000 https://www.kvdm.dev/articles/telegram-group-leaders-research-pandas-seaborn-missingno/ https://www.kvdm.dev/articles/telegram-bot-as-a-command-interface-for-docker-daemon/ The cause enforced me to start searching for an alternative communication channel to ssh for managing my home server is a tunnel agent that is wrapped up in a container. The agent is responsible for keeping a network tunnel established, but from time... 23 Feb 2023 00:00:00 +0000 https://www.kvdm.dev/articles/telegram-bot-as-a-command-interface-for-docker-daemon/ https://www.kvdm.dev/articles/data-conversion-with-redframes-and-dataset/ During active development, table schemas change frequently to correspond to up to date application requirements. Relational DBs are not that well at it as a lot of operations have to be made, you know it as migrations. Schemas not change only, but... 23 Jan 2023 00:00:00 +0000 https://www.kvdm.dev/articles/data-conversion-with-redframes-and-dataset/ https://www.kvdm.dev/articles/colorize-printed-text-to-get-eyes-focused-termcolor/ Working with extended file attributes , i have to do many necessary operations. Updating attributes goes through a search by scanning their values, filtering them and then setting new values up. 15 Dec 2022 00:00:00 +0000 https://www.kvdm.dev/articles/colorize-printed-text-to-get-eyes-focused-termcolor/ https://www.kvdm.dev/articles/derivative-table-of-basic-functions-matplotlib-visualization/ During reading math essentials i lacked of imagination about how a derivative of different basic functions looks like. Matplotlib and some python code helped me out. This is my visual cheat sheet table. 2 Dec 2022 00:00:00 +0000 https://www.kvdm.dev/articles/derivative-table-of-basic-functions-matplotlib-visualization/ https://www.kvdm.dev/articles/getting-selected-elements-by-a-time-series-range-bokeh/ As a newcomer to Bokeh, i would like to know what the events have to be handled to figure out the selected elements on a timeseris plot by a range tool to process them further on a server side and what an object receives those events, Plot or RangeTool. 10 Nov 2022 00:00:00 +0000 https://www.kvdm.dev/articles/getting-selected-elements-by-a-time-series-range-bokeh/ https://www.kvdm.dev/articles/sourcegraph-is-heavyweight/ As i don't remember how and where i used technologies in my experience i wondered what profit Sourcegraph could bring me at searching the code repositories and for potential use in a company. To test it out i chose a stand-alone server option to run... 30 Oct 2022 00:00:00 +0000 https://www.kvdm.dev/articles/sourcegraph-is-heavyweight/ https://www.kvdm.dev/articles/storing-related-accounts-data-in-the-toml-files-visualization-networkx-graph/ Until this point, i stored accounts and their secret data in .ini, .csv, .txt, .pem files and etc., for example credentials, access keys, certificates. Many simple things can be described by and stored in those file types, but accounts have been... 5 Oct 2022 00:00:00 +0000 https://www.kvdm.dev/articles/storing-related-accounts-data-in-the-toml-files-visualization-networkx-graph/ https://www.kvdm.dev/articles/file-system-based-file-changes-history-on-snapshots-lvm-zfs-btrfs/ After stopping usage a cloud disk and transferring data to my own devices i step forward and would like to find a solution of storing text file changes history, other files formats aren't considering as they aren't editing by me. 25 Aug 2022 00:00:00 +0000 https://www.kvdm.dev/articles/file-system-based-file-changes-history-on-snapshots-lvm-zfs-btrfs/ https://www.kvdm.dev/articles/drop-a-cloud-disk-in-favor-of-storing-data-on-the-phone-and-laptop-freefilesync-kdiff3/ Idea to exploit the laptop and phone storages instead of the Google Drive payed plan came up into my mind as i have much free space on them along with not much data in the cloud around 110Gb when laptop total space is 512Gb, phone 256Gb. Also,... 20 May 2022 00:00:00 +0000 https://www.kvdm.dev/articles/drop-a-cloud-disk-in-favor-of-storing-data-on-the-phone-and-laptop-freefilesync-kdiff3/ https://www.kvdm.dev/articles/simply-patch-what-is-unextendable/ An issue, that i can't extend a method __str__, was encountered when i retrieved a list of objects from a third-party service and printed them to see the details, but i got uninformative output. Due to that, i dove into source code to figure out what... 24 Jan 2022 00:00:00 +0000 https://www.kvdm.dev/articles/simply-patch-what-is-unextendable/ https://www.kvdm.dev/articles/beneficial-chrome-replacement-vivaldi/ I had been using Chrome for a quite long time as many others certainly. That's a good, modern, powerful browser. During usage of it for a job purpose, i found more and more features it's good to have to simplify different operations and keep them... 23 Nov 2021 00:00:00 +0000 https://www.kvdm.dev/articles/beneficial-chrome-replacement-vivaldi/ https://www.kvdm.dev/articles/laptop-bootloading-time-extreme-growth-systemd/ If you have Linux installed on your laptop you may once encounter OS is bootloading abnormally slow what is happened in my case and it has taken around 44 seconds where 26 seconds in the userspace level. I've noticed after pressing the power button on... 9 Sep 2021 00:00:00 +0000 https://www.kvdm.dev/articles/laptop-bootloading-time-extreme-growth-systemd/ https://www.kvdm.dev/articles/columnar-db-performance-in-action-duckdb/ This article is intended to represent only one simple thing is a fundamental difference between columnar family and standard row-based databases by an example. Roughly speaking, you may need a column-based database if working with a complex... 14 Jul 2021 00:00:00 +0000 https://www.kvdm.dev/articles/columnar-db-performance-in-action-duckdb/ https://www.kvdm.dev/articles/fix-err-cert-authority-invalid-error-python-clients-get-while-proxying-mitmproxy/ You may find out as me that after proper setting Mitmproxy up python https requests end up with ERR_CERT_AUTHORITY_INVALID error while other http clients are working with no problems. Quite unexpectable, isn't it? 10 Jun 2021 00:00:00 +0000 https://www.kvdm.dev/articles/fix-err-cert-authority-invalid-error-python-clients-get-while-proxying-mitmproxy/ https://www.kvdm.dev/articles/rassmotrenie-abstraktsii-ikh-vzaimosviazei-i-slozhnosti-bibliotek-vstraivaemykh-bd/ Часто возникает желание иметь простейшую архитектуру сервиса или программы, в которой будут отсутствовать избыточные компоненты и межсетевое взаимодействие. Это ощутимо сокращает силы и время на их реализацию, поддержку и погружение. Чтобы... 24 Feb 2021 00:00:00 +0000 https://www.kvdm.dev/articles/rassmotrenie-abstraktsii-ikh-vzaimosviazei-i-slozhnosti-bibliotek-vstraivaemykh-bd/