Production Incident

Reading Time: < 1 minute Had a production incident recently after production deployment. I was not intimately familiar with the oracle index charge (drop) and impact on other apps (lack of visibility and lack of perf testing environment). It’s hard to prevent this sort of thing from happening but I think as developers we should learn from those mistakes and… Continue reading Production Incident

Meet the Teachers

Reading Time: 2 minutes Community night, open house, curriculum night,… the bottomline is, they are all “meet the teachers” night. It’s not as hard as “meet the parents” (I recall there was a movie with that name). Because of pandemic, last few years, meet the teachers have mostly virtual or drive through, to avoid large crowd etc. And I… Continue reading Meet the Teachers

App Store unauthorized charges

Reading Time: < 1 minute In my old job at the credit card šŸ’³ co. I did support for a while and once I spent about 2 hours giving cardholder about 1.3 cents worth of US dollar. Today the roles reversed. Btw, Serenity said she was proud of me (assuming she was complementing I was the cool šŸ˜Ž guy). What… Continue reading App Store unauthorized charges

Brutal selling

Reading Time: < 1 minute also Btw, I sense the current market probably wiped out a lot of new retail investors (home gamers in Jim Cramer’s words), or many new Robinhood app users. Last but not least, is this transitory?

Weekend thoughts: what a market and apple fitness+

Reading Time: 2 minutes The stock market continued its downward trend this past week, and on Friday, S&P 500 went down 20% from the beginning of the year, and it officially tested the bear market (20% down is a measurement of bear market). But, per other measures, such as Schiller PE, it’s 36 as of 04-01-2022 (may down a… Continue reading Weekend thoughts: what a market and apple fitness+

Weekly thought 01-22-2022

Reading Time: < 1 minute I listened to or watched a few interesting youtube video and or twitter space recently. The most significant one is the “storytelling”, I believe this is probably as important as “compounding effect” in investing and life time learning. Below is the youtube video, how to speak, by Prof Patrick Winston of MIT Twitter Space (how… Continue reading Weekly thought 01-22-2022

Teach kids programming

Reading Time: < 1 minute I am thinking about this, also there was an ask from two parents. Some of the things I think I can start at first class, also some of the things I am thinking about teaching (more systematic). Starter: raspberry pi (and micro bit), coder master (Sophia’s game), the lego technic motor sets (not coding but… Continue reading Teach kids programming