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You are thinking about serverless costs all wrong

You are thinking about serverless costs all wrong

The Register published an article right before Christmas 2018. It had a somewhat provocative title, and somehow it ended up in my inbox…
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Yan Cui
All my posts on Serverless

All my posts on Serverless

Tips for writing Lambda functions
Go to the profile of Yan Cui
Yan Cui
We can do better than percentile latencies

We can do better than percentile latencies

Years ago, I used aver­age laten­cy on every dash­board and every alarm. That is, until I woke up to the prob­lems of aver­age laten­cies…
Go to the profile of Yan Cui
Yan Cui
Latest Posts
Yes, S3 now encrypts objects by default, but your job is not done yet

Yes, S3 now encrypts objects by default, but your job is not done yet

Encryption at rest has long been a cornerstone in data security and it’s something that everyone should take seriously. If an attacker is…
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Yan Cui
A practical guide to testing AWS Step Functions

A practical guide to testing AWS Step Functions

Testing Step Functions can be a daunting task. However, with a little preparation and effort, the testing process can be simplified and…
Go to the profile of Yan Cui
Yan Cui
Lambda cold starts is about to get a lot faster!

Lambda cold starts is about to get a lot faster!

Over the past few years, AWS has made incremental improvements to Lambda’s cold start performance. Nowadays, cold starts are much less an…
Go to the profile of Yan Cui
Yan Cui
The biggest pre-invent serverless announcements you may have missed

The biggest pre-invent serverless announcements you may have missed

re:Invent is almost upon us. Judging by the things that had been announced ahead of re:Invent, one can’t help but be excited about the…
Go to the profile of Yan Cui
Yan Cui
How to setup geofencing and IP allow-list for Cognito user pool

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

AWS announced a new feature this week that lets you enable WAF protection for Cognito user pools. And one of the things you can do with…
Go to the profile of Yan Cui
Yan Cui
10 performance optimization tips I learned after rebuilding two landing pages

10 performance optimization tips I learned after rebuilding two lan...

I recently rebuilt the landing page for both AppSync Masterclass and Production-Ready Serverless. The sites were hosted on Shifter (think…
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Yan Cui
The best ways to save money on Lambda

The best ways to save money on Lambda

How Lambda pricing works
Go to the profile of Yan Cui
Yan Cui
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