Yan Cui
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theburningmonk.com
Yan Cui
@theburningmonk.com
I help engineers build better software faster with serverless | AWS Serverless Hero

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TIL web neural network API, an emerging web standard for building in-browser AI apps that lets you use those new NPUs in phones and laptops.

w3.org/TR/webnn
July 10, 2025 at 10:38 AM
:-P
March 27, 2025 at 5:43 PM
Through chaos experiments, the Lambda team reduced response time to an AZ outage by 90%! 🤯
March 27, 2025 at 10:30 AM
Nice to see a full house at the serverless days Manchester 💪
February 20, 2025 at 10:11 AM
This is AWESOME!!

EventBridge now delivers events to cross-account targets directly without having to send them to the default bus in the target account first.

More details here:
aws.amazon.com/about-aws/wh...
January 22, 2025 at 12:38 AM
Here's a mindmap of everything we'll cover in my 4-week boot camp starting on Monday.

Are we missing anything that one should know for running serverless workloads in production?

Detailed curriculum here: productionreadyserverless.com#curriculum
January 18, 2025 at 6:48 PM
oh, this is a toughie...
January 10, 2025 at 9:53 PM
Stop wasting money on CORS preflight requests.

Here's a quick tip for reducing API Gateway costs. 👇
January 10, 2025 at 8:26 AM
This is still my favourite answer to "What does a software architect do?"

Source: youtube.com/watch?v=FGKG...
January 9, 2025 at 7:42 AM
I'm speaking at AWS Community Day Romania this April, in the beautiful city of Timisoara. Hope to see you there 👋

Their CFP is open until February, so there's still time to submit your talk.

More details here: aws-community.ro
January 5, 2025 at 10:44 AM
AWS WAF Classic (or v1) was recently deprecated, and classic Web ACLs no longer appear in the new WAF console.

So it's easy to miss any classic web ACLs you have that are no longer in use, especially if you don't spend much time in the AWS console because you do everything through IaC!
January 3, 2025 at 11:40 AM
I just burned $10,000 on marketing, and it taught me the hardest lesson of my career.

I spent $10,000 on an ad agency and only got 3 sign-ups for my workshop, despite months of ad campaigns and plenty of clicks.

Yet, 30% of students joined through word of mouth, another 30% through social media.
December 30, 2024 at 8:30 AM
Do you build mulit-region applications on AWS?

Then bookmark this page of AWS services and their multi-region capabilities.

repost.aws/articles/AR0...
December 29, 2024 at 7:35 AM
An eng manager at Netflix once told me that "It'd cost 7x to run Netflix if Netflix ran on Lambda". But what he said next was even more insightful.

"But, not everything at Netflix runs at Netflix scale."

And that's true for most enterprises!
December 28, 2024 at 8:59 AM
When you use fetch in Node 20 or later, the X-Ray SDK doesn't propagate trace headers downstream.

If you have a Lambda -> API Gateway -> Lambda, the two invocations will not appear in the same trace.

This is the two-line fix you need. (you need to install the aws-xray-sdk-fetch module first)
December 27, 2024 at 7:56 AM
Skype is pushing everyone to a subscription model for voip phone calls.

Are there any alternatives that's still pay-as-you-go?

I looked at a few, like Viber, but they are all subscriptions-based as well.
December 18, 2024 at 6:41 PM
There is still coupling in Event-Driven Architectures (EDAs)!

Coupling means changes on one side have to propagate to the other side and it can be measured in multiple dimensions.

Even in EDAs, there are multiple forms of coupling:
December 17, 2024 at 7:12 AM
ICYMI, my next serverless workshop is going to include a new Terraform track.

That's 3 courses for the price of 1!

👉 https://buff.ly/2JVuG1o

ps. early bird (30% off) tickets are available until Dec 16th
December 11, 2024 at 12:20 AM
Finally home from re:Invent!

Long journey, but me, Sam and Tim all made it back in one piece.
December 9, 2024 at 1:06 PM
Thank you @antstack.com for the thoughtful gift! It's just what I needed 😀
December 3, 2024 at 3:55 PM
Keeping my Tim Tam (thanks @nickt.com.au) in the safe so I don't forget to take my passport with me!
December 2, 2024 at 7:19 PM
Here we go again!

#reinvent
December 1, 2024 at 3:51 PM
Ok, looks like I will see you guys in Manchester next year 👋

www.serverlessdaysmanchester.com
November 29, 2024 at 10:04 PM
4 soundtracks to get to know me
November 28, 2024 at 10:30 PM
I wonder how many people are moving away from Terraform not because of the license change itself but the uncertainty of it 🤔
November 28, 2024 at 11:21 AM