Recent Articles on the tecRacer AWS Blog

Response headers play a vital role in reinforcing security measures, protecting against various attacks, and enhancing the overall security of your web applications. In this blog post, we’ll explore how to implement a CloudFront response header policy to improve security, walk through the process of testing and refining your settings, and discuss how to automate these changes across your infrastructure.

The TPC-H dataset is commonly used to benchmark data warehouses or, more generally, decision support systems. It describes a typical e-commerce workload and includes benchmark queries to enable performance comparison between different data warehouses. I think the dataset is also useful to teach building different kinds of ETL or analytics workflows, so I decided to explore ways of making it available in Amazon Athena.

Struggling with URL redirections for your AWS-hosted website? If you’re using an S3 bucket as your origin, you might have noticed that S3 alone doesn’t support dynamic redirects via server-side rules. That’s where AWS CloudFront Functions come in—offering a fast, simple, and cost-effective way to manage redirections. In this guide, we’ll show you how CloudFront can handle your URL redirections without requiring separate S3 buckets or CloudFront distributions, streamlining your architecture and improving your website’s SEO and user experience.

If you’re trying to use Apache Airflow to copy large objects in S3, you might have encountered issues where S3 complains about you sending an InvalidRequest. We will fix that in this post by writing a custom operator to handle the underlying problem.

You want to ship the very same code you have tested from test stage to production stage. But most of the time a CICD pipeline re-creates the code to deploy to production. So you do not deploy the tested code! With the AWS Lambda transport tool you can move the very same code you have tested to production or between stages in different accounts.

Even though I had opted out of performance measurement cookies, I noticed a lot of web requests that look like performance measurement in the AWS console. In this article I investigate what’s being sent and what we can do about it.

In this article, we’ll be using GenAI to generate alternative texts for images in Markdown documents, which will help people relying on screen readers to access your content.

Large language models (LLMs) can generate complex text and solve numerous tasks such as question-answering, information extraction, and text summarization. However, they may suffer from issues such as information gaps or hallucinations. In this blog article, we will explore how to mitigate these issues using Retrieval Augmented Generation (RAG) and build a low-cost solution in the process.