Series

AWS

[EN] Be careful before applying immediate modifications in AWS RDS
tl;dr "Apply Immediately" applies everything in the pending modifications queue, not just your change. Always check pending modifications and maintenance tabs first. Don't accidentally trigger a db-upgrade unless you're ready for downtime. What ...
May 20, 20253 min read38
[EN] How I Stopped Copy-Pasting AWS EC2 IPs and Started SSHing Smarter
Remembering IP in a massive, dynamic environment is not easy. You may have an instance with IP 10.0.0.1 today, but there is no guarantee that the same server will be there tomorrow. If you are still SSH-ing to your server using a traditional method l...
May 21, 20252 min read14
[EN] Lesson learned from using the wrong AWS ElastiCache Redis endpoint
A couple of days ago, I learned the hard way that using the wrong endpoint in AWS ElastiCache for Redis can take your app down. I didn’t pay enough attention to the Primary Endpoint, Reader Endpoint, and the Node’s Endpoint. Here’s what happened. Cur...
Aug 13, 20253 min read60
[EN] Set Up Amazon ECR Pull-Through Cache for Docker Hub
The Problem The developers are actively build and test their projects. There are dozens of projects that can be built in a day. This sometimes causes the disk of the CI/CD system (e.g., Jenkins, self-
Apr 22, 20264 min read6
[EN] Harbor-to-Harbor Migration from Block Storage to Object Storage (AWS S3)
💡 AI helped me write this article to make it more understandable and structured. tl;dr — I migrated our staging Harbor registry from local disk storage to a new S3-backed Harbor instance using Harb
Jun 5, 20265 min read
[EN] Setting up Prometheus and Thanos to use S3 as storage backend
tl;dr — Prometheus is great at scraping and querying, but it was never designed to be your long-term storage. Once my TSDB grew to 311 GB and the disk hit 87%, I needed a way out that didn't mean buyi
Jun 9, 20266 min read

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