Lambda@Edge vs CloudFront functions. Edge won.

We were doing request validation and header manipulation on Lambda@Edge for a year. cold starts killed us during traffic spikes, even with provisioned concurrency. switched to CloudFront functions las

AWS Lambda isn't a silver bullet and y'all keep shipping garbage because of it

been cleaning up after lambda migrations for two years now. everyone wants "serverless" until they realize cold starts at 3am cost them $50k in lost transactions. or they hit the 15-minute timeout on

We got woken up at 3am because our Lambda timeouts spiked 400% after a deploy

We'd switched to Node 18 runtime and figured cold starts would be fine. They weren't. A function that usually runs in 200ms was taking 8-12 seconds on cold starts. Our traffic spikes at night (asia ti

Serverless cold starts are way worse than anyone tells you until production hits

Been running a gRPC service on Lambda for 18 months. Cold starts were killing us - median 3.2s, p99 hitting 8s. Customers noticed. We tried the obvious stuff first (provisioned concurrency, bigger mem

Are you really losing sleep over lambda cold starts

So I keep seeing people optimize their serverless stacks to death around cold starts. Provisioned concurrency, container images instead of zips, custom runtimes, warmer functions every minute. The mat

Spent two weeks optimizing cold starts on our Lambda functions, cut them from 1.8s to 340ms

We ship a React component library as Lambda@Edge for dynamic header/footer injection. Cold starts were killing us in prod, especially during traffic spikes. Started with the obvious stuff: smaller bun

Everyone pretending Lambda cold starts don't matter

The amount of cargo cult "best practices" around Lambda is exhausting. Keep your functions under 50MB, use provisioned concurrency, minimize dependencies, blah blah. Yeah, and sometimes a cold start j

I'm Nader Dabit. I am a web and mobile developer, author, and speaker. Ask me anything!

Hey Hashnode community, I am Nader Dabit. I specialize in React, React Native, cloud-enabled and cross-platform application development. Currently, I am working for Amazon AWS Labs. I am the creator of React Native Elements and JAMstack CMS . I ...

Serverless is,

How are you using Serverless architectures?

Internally at my company we are considering moving to Serverless computing and FAAS, and I'd love to hear about your own experience (and warnings) to move towards such an infrastructure. Write your comments, recommendations and questions below. Thank...