Talk

In the talk, I would like to share my experience as a beginner in Rust programming language. The talk will have a walkthrough for getting someone kickstarted with Rust. Once the walkthrough is complete, the talk will discuss some of the quick applications where we can explore the question: Can Rust bring performance benefits? The experiments will explore Python and other programming languages, and using Rust within existing projects written in these languages.

Have you been struggling to set up network load balancing and managing web traffic in Kubernetes?

The Ingress API in Kubernetes seems to be too basic and not expressive enough to help you accomplish what you need. You may end up with many downstream implementation details in your configuration that are not portable. It gets even more complicated when you have developers, operators and network engineers working on the same shared configuration.

Cedar is an open-source language and software development kit (SDK) for writing and enforcing authorization policies for your applications.  Using Cedar, you can express fine-grained permissions as easy-to-understand policies enforced in your applications, allowing you to decouple access control from your application logic. In this session, we will introduce the core concepts behind the Cedar policy language and authorization engine, as well as how you can leverage this open source project to add access control into your applications.

Platform engineering, also known as an "Internal Developer Platform" aims to provide developers with a seamless and efficient environment to manage the entire lifecycle of an application. Django, a popular open-source web framework, is known for its rapid development capabilities and clean, pragmatic design. By leveraging its built-in features, one can expedite the process of developing platform engineering solutions. In this session, I will share my experience using Django for platform engineering at an AI company.

The COSCUP Booth Team is a newly established group this year, primarily responsible for setting up booths in various locations. You may wonder why this group was specifically formed and what it has accomplished since its establishment.

In this session, I will share the reasons behind my decision to establish this group, as well as the activities undertaken after its formation and the impact it has had on COSCUP.

This session will guide you through the process of building a comprehensive email subscription and delivery system, starting from domain and email configuration. We will discuss how to establish a subscription system, verify unique accounts, effectively manage subscriber lists, set up email tracking, create email templates, perform bulk sending, and avoid bouncebacks and related issues.

Facebook、Instagram、Twitter等社群媒體一台獨大。有人詬病它們監督不力，讓虛假資訊和極端思想滿天飛，亦有人不滿它們審查言論和無故封鎖帳號。有人因此轉投MeWe等另類中心化平台，有些人則希望結束一台專政，建設去中心化平台。

但是去中心化只是手段，更好的社群才是目的。去中心化平台該如何處理不良內容，克服內容審核的不可能三角？去中心化社群媒體，很多人都聽過Mastodon，那你有聽過近期流行的Bluesky Social 嗎？Mastodon有什麼不好要去開發新的網絡協定？社群媒體演算法對用戶是壞東西？

從Mastodon到Bluesky Social，講者會分享去中心化社群媒體面對的內容審核難題，從技術角度深入解構兩個系統架構上的取捨。可是到最後，會發現最難的從來不是技術問題，還是人的問題。

AWS AI Assistant is a serverless applications and integrates most of the AWS AI/ML services and Open AI.
The most popular tech news in 2023 is the raise of generative AI with Large language models. With those powerful pre-built model or AI API, we can build a very powerful virtual assistant with the combination and integration of all AWS AI/ML services with OpenAI API or Hugging Face pre-trained model. For my use case, I hope my students learn and use AI but I do want to have certain control and monitoring. So, we want to make it fun and powerful for my students.

The Common Spatial Data Infrastructure (CSDI) is a key initiative under the Smart City Blueprint for Hong Kong. The CSDI portal launched by the Development Bureau (DEVB) provides a map-based digital infrastructure as a one-stop platform to open and share spatial data. By allowing members of the public to search, view and download various kinds of spatial data from the portal, a wide range of possibilities for application development will be opened, the digital economy boosted and quality of life improved.

In 2022, I launched a Kotlin podcast show, Kotlin Fireside Chat, with my friends in Kotlin User Group. Now, we're taking things to the next level by building a podcast website with a statistical analysis dashboard. We've built a static website using Jamstack and connected it to a serverless API written in Kotlin. In order to aggregate the listener number across platforms, such as YouTube, BiliBili, Ximalaya, Lizhi, Qingting, we've also created a crawler to grab those numbers and display them in a custom dashboard.