Thanks for this Alex! Will definitely check this out. DynamoDBGuide.com was a huge help to me when I was learning serverless last year to build wanderium.com. There's definitely a learning curve for DynamoDB but the performance is really good.
Do you talk about the best way to do aggregations in your book? That's one of the more annoying downsides of DynamoDB that I've kind of had to hack my way around. (I combine DynamoDB streams with a Lambda function to increment/decrement a count)
Thank you! Glad you found DynamoDBGuide.com helpful :)
Yep, I do talk about aggregations in the book. One strategy that I've discussed is available in a blog post here[0] and involves using DynamoDB Transactions to handle aggregates.
If you're looking for large-scale aggregates for analytics (e.g. "What are my top-selling items last month?"), I have an Analytics supplement in the Plus package that includes notes on different patterns for analytics w/ DynamoDB.
Very sad indeed. I haven't found anything comparable with global coverage or historical data support that's reasonably priced or has an easy to use self serve UI.
I remember being pretty amazed by its UI back when it launched, but unfortunately has fallen off the last few years.
Flights are hard, and it's why we're staying away from flights at first for my travel startup Wanderium (wanderium.com). Instead we're focusing first on the "long tail" of travel issues: visas, vaccinations, safety, local customs, infrastructure, etc. By aggregating all of this data in a single place and presenting them in a single, personalized experience we think it can save travelers many hours per trip.
I find it a bit funny how many people in here think Disney sucks now. The tech/developer crowd clearly is not their audience (which is fine). I personally think Disney has done a good job with the Marvel acquisition by taking some pretty unknown characters and turning them into heroes on par with Spiderman which 10-15 years ago would be unbelievable. The Last Jedi on the other hand I thought was meh. Leia floating through space? That's pushing it.
Anecdotally, I was just at Disneyland on a weekday recently and it was as packed as can be, and among my friends who aren't at in tech many of them are diehard Disney fans and are super excited for Disney+ (especially their new show Mandalorian). Considering Disney's track record at the box office the last 5 years I expect Disney+ to do well.
In most states dealership cars typically have dealer plates which only allow them to be driven during test drives or by dealership employees. How do you handle that?
I listened to this podcast series too! So, so interesting, especially as an Asian American and understanding how that period of Japanese colonialism affected the rest of the region.
For a great in depth but still understandable look at the race to zero emissions, including carbon capture technologies, I highly recommend this series from Quartz: https://qz.com/on/race-to-zero-emissions/
It seems increasingly likely with every one of these reports that our usage of plastics has lead to the large drop in sperm counts the last few decades: https://www.gq.com/story/sperm-count-zero
Don’t forget the subway lines in basically every Chinese city! Beijing has overcrowding issues, but Shanghai, Chengdu, Guangzhou all have phenomenal metros.
As a native New Yorker I was blown away by the Shenzhen subway when I visited last year.
It's spotless, easy to navigate (lots of language-free signs with really clear intuitive diagrams of where to go), and almost eerily fast and smooth-riding. And 5 bars of LTE the whole time.
A thing built 6-10 years ago will always be more modern and less run down than a thing built 60-100 years ago. Time will tell how well the Chinese systems age.
