nodejs

Key Takeaway: os .cpus() returns the number of cores on a Kubernetes host, not the number of cores assigned to a pod. Investigating excessive memory usage Recently, when I was looking through a cluster health dashboard for a Kubernetes cluster, I noticed that one of the applications deployed was using a considerable amount of RAM - way more than I thought could be reasonable. Each instance (pod) of the application used approximately 8 GB of RAM, which was definitely excessive for a reasonably simple NodeJS webserver....

I had the need to get some OpenTelemetry data out of a NodeJS application, and into NewRelic’s distributed tracing service, but found that there is no way to do it directly, and in this use case, adding a separate collector is more hassle than it’s worth. Luckily, there is an NodeJS OpenTelemetry library which can report to Zipkin, and NewRelic can also ingest Zipkin format data. To use it was relatively straight forward:...

I have been writing simple webhook type applications using Claudiajs, which in behind the scenes is using Aws’s Lambda and Api Gateway to make things happen, but I really wanted to understand what exactly it was doing for me, and how I could achieve the same results using Terraform. The Lambda Function I started off with a simple NodeJS function, in a file called index.js exports.handler = function(event, context, callback) { callback(null, { statusCode: '200', body: JSON....