Serverless

Yubl’s road to Serverless architecture – ops

part 1: overview part 2: testing and CI/CD part 3: ops <- you’re here part 4: building a scalable notification system part 5: building a better recommendation system A couple of folks asked me about our strategy for monitoring, logging, etc. after part 2, and having watched Chris Swan talk about “Serverless Operations is not a …

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Yubl’s road to Serverless architecture – Testing and CI/CD

part 1: overview part 2: testing and CI/CD <- you’re here part 3: ops part 4: building a scalable notification system part 5: building a better recommendation system Having spoken to quite a few people about using AWS Lambda in production, testing and CI/CD are always high up the list of questions, so I’d like to use …

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Yubl’s road to Serverless architecture – overview

part 1: overview <- you’re here part 2: testing and CI/CD part 3: ops part 4: building a scalable notification system part 5: building a better recommendation system Since Yubl’s closure quite a few people have asked about the serverless architecture we ended up with and some of the things we have learnt along the …

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Yubl – a sad end to a wonderful journey

By now many of you would have heard about the demise of Yubl – the startup where I have been working the last 7 months – in the same week Karhoo also announced its closure.   It took all of us by surprise, and happened at a time when we have made real strides in the (r)evolution of our backend architecture. …

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AWS Lambda – use recursive function to process SQS messages (Part 2)

First of all, apologies for taking months to write this up since part 1, I have been extremely busy since joining Yubl. We have done a lot of work with AWS Lambda and I hope to share more of the lessons we have learnt soon, but for now take a look at this slidedeck to get a flavour. …

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Takeaways from “Simplifying the Future” by Adrian Cockcroft

Simplifying things in our daily lives “Life is complicated… but we use simple abstractions to deal with it.” – Adrian Cockcroft When people say “it’s too complicated”, what they usually mean is “there are too many moving parts and I can’t figure out what it’s going to do next, that I haven’t figured out an …

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AWS Lambda – janitor-lambda function to clean up old deployment packages

When working with AWS Lambda, one of the things to keep in mind is that there’s a per region limit of 75GB total size for all deployment packages. Whilst that sounds a lot at first glance, our small team of server engineers managed to rack up nearly 20GB of deployment packages in just over 3 months! Whilst …

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