Yan Cui

AWS Serverless Hero. Consultant. Speaker. Trainer. Blogger.

Amsterdam, Netherlands Joined on Apr 19, 2019 https://theburningmonk.com

Lumigo

AWS Heroes

Serverless

AWS, Serverless, DevOps, F#, C#, Node.js, Scala

Consulting and workshops on AWS/serverless

92 posts published

24 comments written

7 tags followed

Yan Cui for AWS Heroes

Aug 18

How to setup geofencing and IP allow-list for Cognito user pool

#aws #cognito #security #waf

3 min read

“Even simple serverless applications have complex architecture diagrams”, so what?

Yup, absolutely. It's about looking at your Total Cost of Own...

Nov 15 '20

AWS Serverless: you might not need third party monitoring

CW Logs Insights has lots of functional limitations (ie. what...

Jul 29 '20

Five reasons you should consider AppSync over API Gateway

Ah, I see. For those, you can perform validation in the VTL r...

Jul 28 '20

Five reasons you should consider AppSync over API Gateway

What sorta validation are you thinking about? In most cases, ...

Jul 27 '20

Five reasons you should consider AppSync over API Gateway

Amplify is a set of related tools (there's the amplify-js cli...

Jul 27 '20

Five reasons you should consider AppSync over API Gateway

yes, pretty much, for example, getMyProfile would return your...

Jul 27 '20

5 Things I Learned from The DynamoDB Book

For no. 5, DynamoDB is not the right solution for storing r...

Apr 11 '20

Year in Review, 2019

Thank you, glad I was able to help! I don't have a full tim...

Jan 6 '20

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Yan Cui

Aug 11

How to add a zoom in effect with CSS

#appsyncmasterclass #css3

1 min read

Yan Cui for AWS Heroes

Jul 18

The best ways to save money on Lambda

#aws #lambda

7 min read

Yan Cui for AWS Heroes

Jul 18

My testing strategy for serverless applications

#aws #lambda #programming #serverless

7 min read

Yan Cui for AWS Heroes

Aug 11

Group-based auth with AppSync Lambda authoriser

#appsync #aws #programming #security

4 min read

Yan Cui for AWS Heroes

Jun 7 '21

How to handle client errors gracefully with AppSync and Lambda

#appsync #aws #lambda #programming

3 min read

Yan Cui for AWS Heroes

May 10 '21

Lambda layer: not a package manager, but a deployment optimization

#aws #lambda #programming #serverless

3 min read

Yan Cui for AWS Heroes

May 6 '21

How to manage Route53 hosted zones in a multi-account environment

#aws #programming #route53 #cloudformation

3 min read

Yan Cui for AWS Heroes

Apr 6 '21

Building a custom IAM system has made me appreciate AWS IAM even more

#appsync #aws #lambda #programming

7 min read

Yan Cui for AWS Heroes

Mar 28 '21

How to model one-to-many relationships with AppSync and DynamoDB

#appsync #aws #dynamodb

3 min read

Yan Cui for AWS Heroes

Mar 27 '21

How to secure multi-tenant applications with AppSync and Cognito

#appsync #aws #cognito #serverless

4 min read

Yan Cui for AWS Heroes

Mar 20 '21

The case for and against Amazon Cognito

#aws #programming #cognito

7 min read

Yan Cui for AWS Heroes

Mar 20 '21

How to configure environment specific parameters with Vue.js and Amplify

#amplify #aws #programming #vue

3 min read

Yan Cui for AWS Heroes

Dec 7 '20

What you need to know about Aurora Serverless v2, so far.

#aws #serverless #rds

2 min read

Yan Cui for AWS Heroes

Nov 18 '20

How I built a social network in 4 weeks with GraphQL and serverless

#appsync #aws #graphql

7 min read

Yan Cui for AWS Heroes

Nov 13 '20

“Even simple serverless applications have complex architecture diagrams”, so what?

#aws #serverless #cloud

17 3

5 min read

Yan Cui

Nov 4 '20

Production-Ready Serverless is back!

#aws #lambda #serverless

4 min read

Yan Cui

Nov 2 '20

AppSync Masterclass is open for early access!

#graphql #aws #serverless

2 min read

Yan Cui for AWS Heroes

Sep 22 '20

How to sample AppSync resolver logs

#appsync #aws #cloudwatch #lambda

4 min read

Yan Cui for AWS Heroes

Sep 13 '20

How to set up custom domain names for AppSync

#appsync #aws #serverless #graphql

4 min read

Yan Cui for AWS Heroes

Aug 26 '20

How to model hierarchical access with AppSync

#appsync #aws #graphql #serverless

5 min read

Yan Cui for AWS Heroes

Aug 18 '20

What alerts should you have for serverless applications?

#aws #awslambda #serverless #cloud

6 min read

Yan Cui for AWS Heroes

Aug 15 '20

Weekly update 47

#me #weeklyupdate

5 min read

Yan Cui for AWS Heroes

Aug 7 '20

Choreography vs Orchestration in the land of serverless

#aws #lambda #serverless

62 3

6 min read

Yan Cui for AWS Heroes

Jul 30 '20

How I scaled an AppSync project to 200+ resolvers

#appsync #aws #serverless

7 min read

Yan Cui for AWS Heroes

Jul 26 '20

Five reasons you should consider AppSync over API Gateway

#aws #appsync #serverless #graphql

86 9

8 min read

Yan Cui for AWS Heroes

Jul 19 '20

AppSync: how to inject table names into DynamoDB batch & transact operations

#appsync #aws #serverless

4 min read

Yan Cui for AWS Heroes

Jul 18 '20

Weekly update 46

#aws #serverless

5 min read

Yan Cui for AWS Heroes

Jul 12 '20

Are Lambda-to-Lambda calls really so bad?

#aws #lambda #serverless

36 6

5 min read

Yan Cui for AWS Heroes

Jul 8 '20

Why we didn’t choose QLDB for a healthcare app

#aws #qldb

4 min read

Yan Cui

Jul 6 '20

Production-Ready Serverless is back (with improved curriculum)!

#aws #lambda #serverless

2 min read

Yan Cui

Jul 3 '20

I left full-time employment, here’s what happened since

#career

8 min read

Yan Cui for AWS Heroes

Jun 20 '20

How to choose the right API Gateway auth method

#apigateway #aws #serverless #security

3 min read

Yan Cui

May 2 '20

AppSync: how to compare strings lexicographically in VTL

#appsync #aws #serverless

1 1

2 min read

Yan Cui

May 1 '20

Weekly update 44

#me #weeklyupdate

5 min read

Yan Cui

Apr 18 '20

AppSync: how to error on DynamoDB conditional check failures

#appsync #aws #dynamodb #graphql

4 min read

Yan Cui

Apr 16 '20

Skill up your serverless game with my new instructor-led online workshop

#aws #lambda #career #serverless

4 min read

Yan Cui

Apr 9 '20

Hit the 6MB Lambda payload limit? Here’s what you can do.

#apigateway #aws #lambda #programming

5 min read

Yan Cui

Apr 4 '20

AppSync: skipping nullable nested resolvers by returning early

#appsync #aws #graphql #serverless

3 min read

Yan Cui for AWS Heroes

Mar 22 '20

How to: optimize Lambda memory size during CI/CD pipeline

#aws #lambda #performance #serverless

7 min read

Yan Cui

Mar 11 '20

Weekly update 42

#me #realworldserverles #weeklyupdate

4 min read

Yan Cui

Mar 6 '20

Announcing the new Real-World Serverless podcast

#aws #lambda #realworldserverles #serverless

10 1

2 min read

Yan Cui

Feb 23 '20

Diversity tickets for Production-Ready Serverless workshops

#aws #me #serverless

2 min read

Yan Cui

Feb 19 '20

Weekly update 41

#me #weeklyupdate

4 min read

Yan Cui

Feb 12 '20

Well-architect your way to better serverless applications

#aws #serverless

2 min read

Yan Cui

Feb 9 '20

AWS Heroes united!

#aws #lambda #serverless

2 min read

Yan Cui

Feb 3 '20

Weekly update 40

#me #weeklyupdate

5 min read

Yan Cui

Jan 30 '20

20 new lessons of Lambda best practices

#aws #lambda #serverless

2 min read

Yan Cui

Jan 20 '20

Weekly update 39

#weeklyupdate #aws #serverless

6 min read

Yan Cui

Jan 14 '20

New course – Learn you some Lambda best practice for great good!

#aws #lambda #serverless

2 min read

Yan Cui

Jan 8 '20

Weekly update 38

#aws #serverless

8 min read

Yan Cui

Jan 5 '20

Year in Review, 2019

#me #yearinreview

5 3

4 min read

Yan Cui

Jan 6 '20

Complete Guide to Step Functions: new lessons and 50% off sale is now on

#aws #stepfunctions

1 min read

Yan Cui

Nov 6 '19

Breaking the "senior engineer" ceiling

#career

201 1

6 min read

Yan Cui

Nov 4 '19

Check-list for going live with API Gateway and Lambda

#apigateway #aws #lambda #serverless

5 min read

Yan Cui

Nov 7 '19

Weekly update 36

#me #weeklyupdate

1 min read

Yan Cui

Oct 22 '19

Top 10 Serverless Best Practices

#serverless #aws #awslambda

46 1

4 min read

Yan Cui

Oct 21 '19

My advice to junior developers

#career

224 15

6 min read

Yan Cui

Oct 21 '19

How to analyze Lambda cold starts

#aws #lambda #programming #serverless

2 min read

Yan Cui

Oct 19 '19

Common Node.js mistakes in Lambda

#aws #serverless #node #javascript

152 8

3 min read

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Recent comments

“Even simple serverless applications have complex architecture diagrams”, so what?

AWS Serverless: you might not need third party monitoring

Five reasons you should consider AppSync over API Gateway

Five reasons you should consider AppSync over API Gateway

Five reasons you should consider AppSync over API Gateway

Five reasons you should consider AppSync over API Gateway

5 Things I Learned from The DynamoDB Book

Year in Review, 2019