How to connect SNS to Kinesis for cross-account delivery via API Gateway

API Gateway, AWS, Kinesis, Lambda, Programming, Serverless, SNS

At DAZN (where I no longer work), the teams work with a number of third-party providers. They often have to synchronize data between different AWS accounts. SNS to SQS is the primary mechanism for these cross-account deliveries because: it was an established pattern within the organization DAZN engineers and third-party engineers are both familiar with …

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Weekly update 29

Me, Weekly Update

Hi, welcome to another weekly update. This is my first update since moving to Amsterdam, and I have perhaps been indulging myself on Stroopwafel a little too much! Seriously, they’re so good, and available everywhere! Anyhow.. on with the update ;-) New posts Meet the family, the “other” AWS serverless services. In this post, I …

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AWS Lambda: how to share code between functions in a monorepo

AWS, Lambda, Programming, Serverless

A while back, a client asked me “how can I share business logic between services in a Node.js monorepo?”. The TL;DR of it is: Encapsulate the shared business logic into modules, and put them in a separate folder. In the Lambda handler functions, reference the shared modules using relative paths. Use webpack to resolve and …

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Step Functions as an ad-hoc scheduling mechanism

AWS, Design Patterns, Lambda, Programming, Serverless, Step Functions

We previously discussed how you can implement an ad-hoc scheduling system using DynamoDB TTL as well as CloudWatch Events. And now, let’s see how you can implement the same system using AWS Step Functions and the pros and cons of this approach. As before, we will assess this approach using the following criteria: Precision: how …

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Weekly update 28

Me, Weekly Update

Hi, welcome to another weekly update. Bye bye, DAZN! Yesterday was my last day at DAZN. Handed in my laptop, bagged my slippers, this is it. It's been a pleasure @dazneng! See you guys around ?? — Yan Cui (@theburningmonk) June 21, 2019 I’m fortunate and grateful to have had the chance to play a …

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AWS Lambda: how to detect and stop accidental infinite recursions

AWS, Lambda, Programming, Serverless

Lambda makes it easy to build event-driven architectures. Each function only needs to look after its own responsibilities. We chain them together through APIs, queues, streams, and other event sources. It’s a good way to build complex systems out of simple components. We need only managed services, and we only pay for them when we …

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Weekly update 27

Me, Weekly Update

Hi, welcome to another weekly update. We welcome Trek10 as our sponsor for June! It is my pleasure to welcome Trek10 as our sponsor for this month, let’s hear from them. Serverless computing can seriously reduce TCO and time to market. But serverless is a new discipline. The best practices are emerging, and even large …

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ICYMI: five updates you’ve missed about Serverless Step Functions

AWS, Lambda, Programming, Serverless, Step Functions

Over the last 6 months, we have made the Serverless Step Functions plugin better and more useful. Here are the most impactful changes, in case you missed it! Support for intrinsic function One of the main pain points of using the plugin has long been that you needed to use fully-formed ARNs. As of v1.18.0 …

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