[update 23/07/2018]: The approach outlined in this post works well when you start out, but you can run into concurrency related issues at scale. To see a better approach when running at scale, please see the revised version of this post here. CloudWatch Logs is hardly the ideal fit for all your logging needs, …
You may not realise that you can write AWS Lambda functions in a recursive manner to perform long-running tasks. Here’s two tips to help you do it right. AWS Lambda limits the maximum execution time of a single invocation to 5 minutes. Whilst this limit might be raised in the future, it’s likely that you’ll still …
Write recursive AWS Lambda functions the right way Read More »
Threats to the security of our serverless applications take many forms, some are the same old foes we have faced before; some are new; and some have taken on new forms in the serverless world. As we adopt the serverless paradigm for building cloud-hosted applications, we delegate even more of the operational responsibilities to our …
TL;DR – AWS announced the long awaited auto scaling capability for DynamoDB, but we found it takes too long to scale up and doesn’t scale up aggressively enough as it’s held back by using consumed capacity as scaling metric rather than actual request count. Here at Space Ape Games we developed an in-house tech to auto scale DynamoDB …
The problems with DynamoDB Auto Scaling and how it might be improved Read More »
One of the complaints developers often have for AWS Lambda is the inability to run and debug functions locally. For Node.js at least, the Serverless framework and VS Code provides a good solution for doing just that. An often underused feature of the Serverless framework is the invoke local command, which runs your code locally by …
Hi everyone, just a quick note to let you know that I’m running a live online course with O’Reilly on designing serverless architectures with AWS Lambda. It’s a 2-day course on September 11-12th with 6 hours in total, and it’s available for free if you have a subscription with SafariBooksOnline. Registration for the course is open till September …
I’m running a live course on designing serverless architecture with AWS Lambda Read More »
Security in serverless world from Yan Cui
The Saga pattern is a pattern for managing failures, where each action has a compensating action for rollback. In Hector Garcia-Molina’s 1987 paper, it is described as an approach to handling system failures in a long-running transactions. It has become increasingly relevant in the world of microservices as application logic often needs to transact across …
Applying the Saga pattern with AWS Lambda and Step Functions 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 »
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