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Building an AWS Serverless system: Provisioned concurrency, Zero-Downtime and Monitoring

In this second blog post in my series about an API-based serverless service in AWS, I discuss Provisioned Concurrency — a way to make Lambdas respond faster, without a "cold start". When we tried to configure it, it turned out that a re-deploy would yield downtime. Here I summarize what we have learnt.


  • Portrait of Askar Ibragimov
    Askar Ibragimov
    Cloud Architect and Senior Developer