Bryan's Reflective Path

Semantic Layer with Unified Star Schema

A novel idea completes the generated star schema.

Aug 12, 2024 • 

Bryan Tsai

January 2024

Optimize Data Lake Layout to Support Multiple Ordering

There is a way for a data lake to be physically clustered and sorted by multiple columns at the same time.

Jan 29, 2024 • 

Bryan Tsai

Your Timezone or My Timezone?

We gotta choose one. Which one are you going to choose?

Jan 21, 2024 • 

Bryan Tsai

Dealing with Late-Arriving Data in Data Vault

There is always some late-arriving data. How do we deal with it in Data Vault?

Jan 5, 2024 • 

Bryan Tsai

December 2023

Maintaining Two Timelines with Data Vault

In business architecture, there are at least two views: the real-world view and our system’s view.

Dec 5, 2023 • 

Bryan Tsai

November 2023

Generating Star Schemas from Data Vault

Our RootCloud Platform provides an easy way for users to construct their enterprise data vault to generate dimensional star schemas…

Nov 24, 2023 • 

Bryan Tsai

May 2017

Serverless Feed Aggregator

With Serverless Framework, OpenWhisk, and Cloudant

May 25, 2017 • 

Bryan Tsai

Serverless IoT Analytics with OpenWhisk Part 3 — How to keep state?

This is the third part of a series.

May 10, 2017 • 

Bryan Tsai

April 2017

Serverless IoT Analytics with OpenWhisk Part 2 — How to structure functions?

This is the second part of a series.

Apr 26, 2017 • 

Bryan Tsai

Serverless IoT Analytics with OpenWhisk Part 1 — Is It Slower?

As I explored the serverless world (the FaaS area), I always wondered how it compared to the “normal” way. Would it slow things down? Is it…

Apr 19, 2017 • 

Bryan Tsai

How to Trigger OpenWhisk Actions from Watson IoT Analytics

Watson IoT Analytics rule triggering supports several action types: email, webhook, Node-RED, and IFTTT. In most cases, these actions allow…

Apr 7, 2017 • 

Bryan Tsai

How to resolve dependency conflict out of your control

My project uses Apache Twill and Cassandra Java Driver. Twill uses Guava 13.0.1 while Cassandra Java Driver uses Guava 16.0.1. Even worse…

Apr 5, 2017 • 

Bryan Tsai