Blog#

First try on Quart an asyncio re-implementation of Flask

Flask is a little bit old-fashioned today (I know it's still widely used), as it's not async native, among others. When I prepared my fastapi-demo this weekend, I discovered a new framework called Quart, which is maintained by Pallet Project, the same community maintaining Flask. They said "Quart is an asyncio re-implementation of the popular Flask micro framework API. This means that if you understand Flask you understand Quart.". So I decided to give it a try.

Sqlalchemy eager loading

This posts describes the differences on selectinload, joinedload, subqueryload, these 3 popular eager loading techniques in Sqlalchemy (so as to SQLModel)

Azure Messaging Service

This post is based on the official Azure documentations (Asynchronous messaging options, Compare Azure messaging services, Enterprise integration using message broker and events, Azure Well-Architected Framework) and describes a resume of differences and uses cases for Azure messaging service, including Service Bus, Event Grid, Event Hubs. The official documentations are very good and comprehensive, this post is for my personal reference as a quick reminder.

Getting all users from MS Graph API in few seconds

MS Graph API's endpoint for retrieving users, GET /users can return all users of the tenant. The default limit is 100 users per page, and the maximum limit is 999 users per page. If there are more than 999 users, the response will contain a @odata.nextLink field, which is a URL to the next page of users. For a big company having a large number of users (50,000, 100,000, or even more), and it can be time-consuming to retrieve all users.

While MS Graph API provides generous throttling limits, we should find a way to parallelize the queries. This post explores sharding as a strategy to retrieve all users in a matter of seconds. The idea is to get all users by dividing users based on the first character of the userPrincipalName field.For instance, shard 1 would encompass users whose userPrincipalName starts with a, shard 2 would handle users starting with b, and so forth.

Debugging in Python

Debugging in vscode

Scripts to delete outlook emails

Outlook.com has an overwhelming number emails and deleting them using rules is challenging. Notably, the online filter of Outlook.com can only loads a maximum of 1000 emails. Therefor I have to use scripts (like VBA scripts) to delete them. Below is the script that selects all the unread emails before a given date and deletes them.

Python packaging with Flit

This post provides a simple starter demonstration on how to use Flit for building and publishing Python package. However, for more complex builds, such as compiling C code, you still need the de facto standard setuptools.

bash-git-prompt tweaks

Some tweaks I made to bash-git-prompt. dynamic Python virtualenv path, new var GIT_MESSAGE, etc.

Rendering CSV as Markdown table in Mkdocs Material

Markdown table is not easy to write in IDE. So I want to write CSV and render it as Markdown table. Previously I used a pre-build script during CICD time to convert CSV to Markdown table, and referenced it as --8<-- "markdown_table_file_path.md". But it's not convenient to preview the result locally. So I want to find a way to render CSV as Markdown table in Mkdocs Material directly.