When I discuss AWS Lambda cold starts with folks in the context of API Gateway, I often get responses along the line of: Meh, it’s only the first request right? So what if one request is slow, the next million requests would be fast. Unfortunately that is an oversimplification of what happens. Cold start happens once for …
I’m afraid you’re thinking about AWS Lambda cold starts all wrong Read More »
With API Gateway and Lambda, you’re forced to use relatively short timeouts on the server-side: API Gateway have a 30s max timeout on all integration points Serverless framework uses a default of 6s for AWS Lambda functions However, as you have limited influence over a Lambda function’s cold start time and have no control over the amount of …
AWS Lambda – use the invocation context to better handle slow HTTP responses Read More »
This is part 2 of a multipart series that explores ideas on how we could apply the principles of chaos engineering to serverless architectures built around Lambda functions. part 1: how can we apply principles of chaos engineering to Lambda? part 2: latency injection for APIs <- you’re here part 3: fault injection for Lambda …
Applying principles of chaos engineering to AWS Lambda with latency injection Read More »
AWS announced binary support for API Gateway in late 2016, which opened up the door for you to use more efficient binary formats such as Google’s Protocol Buffers and Apache Thrift. Why? Compared to JSON – which is the bread and butter for APIs built with API Gateway and Lambda – these binary formats can produce significantly smaller payloads. At scale, …
Using Protocol Buffers with API Gateway and AWS Lambda Read More »
Serverless architectures are microservices by default, you need correlation IDs to help debug issues that spans across multiple functions, and possibly different event source types – asynchronous, synchronous and streams. This is the last of a 3-part mini series on managing your AWS Lambda logs. If you haven’t read part 1 yet, please give it a read now. …
Capture and forward correlation IDs through different Lambda event sources Read More »
part 1: overview part 2: testing and CI/CD part 3: ops part 4: building a scalable notification system part 5: building a better recommendation system <- you’re here When I joined Yubl in April 2016, it had launched just 2 months earlier, after a long and chaotic development cycle that lasted more than 2 years …
AWS announced general availability of AWS Lambda support for AWS X-Ray back in May. It’s taken me a while to try it out, and whilst I see plenty of values I think its current limitations significantly restricts its usefulness in a complex system. I found Lambda-specific documentations to be fragmented and I had to rely …
aws x-ray and lambda : the good, the bad and the ugly Read More »
Having previously blogged about the untrodden path to enable caching on API Gateway request parameters in the Serverless framework 0.5.X, it’s a little disappointing that it’s still not officially fixed in the 1.X versions… The Problem The problem is two-fold: there’s currently no way to specify caching should be enabled for path & query string …
Serverless 1.X – enable API Gateway caching on request parameters Read More »
An interesting requirement came up at work this week where we discussed potentially having to run our own URL Shortener because the Universal Links mechanism (in iOS 9 and above) requires a JSON manifest at https://domain.com/apple-app-site-association Since the OS doesn’t follow redirects this manifest has to be hosted on the URL shortener’s root domain. Owing to a limitation on AppsFlyer it’s …
AWS Lambda – build yourself a URL shortener in 2 hours Read More »
Hello, just a quick note to say thanks to everyone who attended the AWS user group meetup last night, was a pleasure to talk to many of you afterwards. As promised, here are the slides for my talk from last night. AWS Lambda from the trenches from Yan Cui
By continuing to use the site, you agree to the use of cookies. more information
The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.