Metrics temporality and potential cost of not centralizing it. TL;DR: The temporality of OTEL metrics may ruin your flexibility, as it’s set at the application level and can’t be easily centralised in collectors. You should prepare your platforms to inject an environment variable for it. …

Case study of migrated Serverless solution from TypeScript to Go language. Based on 1-to-1 migration, facts, figures and reasons behind it. Intro More than six years ago, my team decided to migrate our products to a serverless architecture and adopt a serverless-first approach. At that time, all services managed by my…

Find out what tail sampling is and how to set up OpenTelemetry collectors to work with it in gateway mode at scale. This article won’t mention OpenTelemetry basics and it is continuation of previous article about setting up OpenTelemetry on AWS that you can find here: https://medium.com/@sodkiewiczm/aws-opentelemetry-e553de8cadf Why would I need tail-based sampling? Before we look…

Case study how we migrated our API to serverless “API” with multi-region support saving money on the way. Situation We have a system that is responsible for maintaining complex relational data that is heavily used on one of the busiest air travel websites according to: similarweb. We had several iterations of…

Back-of-the-envelope estimations with https://www.aws-geek.com/ Motivation Me & my team were migrating our systems to the AWS many years ago. We started in 2016 and these were our first steps in the AWS. We weren’t big fans of lift & shift migrations (to say the least), as we knew that the cloud…

TL;DR Changing only env variables in your SAM template might not update your lambda config. So you should consider adding in SAM template: Transform: - AWS::LanguageExtensions - AWS::Serverless-2016-10-31 Intro I have been using SAM for serverless application deployments for a couple of years now. I use the AutoPublishAlias feature to publish the…

How & why you should start using your own SAM CookieCutter templates. Motivation I build a lot of small projects to play with AWS services. Apart from my day job, I create my own small projects, usually using AWS Lambda. Some of them are written in Go and some in TypeScript…

Step-by-step guide to migrating your GoDaddy domain to AWS using S3, CloudFormation, ACM & CloudFront. This article will walk you through what you need to do step by step. Pre-requisites Owning GoDaddy domain AWS Account

Find out how to setup OpenTelemetry collector on AWS in Gateway mode, how and why to centralize your OTEL configuration. Let’s dive into a journey of running OpenTelemetry on AWS. What is OpenTelemetry? OpenTelemetry is a standard that was created by combining OpenTracing and OpenCensus. Currently part of a CNCF initiative, OpenTelemetry is…